Best stick on wheel weights

The most common weight for steel wheels.

Used on domestic vehicles equipped with alloy rims that were manufactured prior to 1995.

Used on most domestic vehicles equipped with alloy rims.

Used on many new Ford models, on most European vehicles and certain Asian vehicles equipped with alloy rims. Fits Many brands like Audi, BMW, Cadillac, Jaguar, Kia, Nissan, Toyota, Volkswagen & Volvo

Used on most Japanese vehicles equipped with alloy wheels.

The most commonly used weight on heavy-duty trucks with steel rims. Also used on some older medium-duty truck with steel wheel.

How to choose a manual chain hoist from the manufacturer "Cargo mechanics +"

Today we will talk about how to choose the right professional chain hoist, what you should pay attention to, and how to avoid mistakes when buying lifting equipment. Conventionally, all manual chain hoists are divided into 2 types:

• household;
• professional

The former are usually round. They are not so common, so it will not be difficult to dwell on a specific option. Professional waists deserve more attention. For a temperate climate, equipment of group U is suitable (according to GOST 15150). There are also models designed for explosive industries, very humid climates, etc.

But these are specific niches, so we will focus on chain hoists for temperate climates. We will talk about such models: Russian hoist of the Sibtal brand, Chinese equipment from the BL brand and Japanese SAIZEN mechanisms. The highest score will be 3, the lowest - 1.

Appearance

This characteristic does not affect the operation of the device, so the highest score will be 2. Externally, all equipment looks quite attractive. You can observe a neat assembly and high-quality powder coating. SAIZEN chain hoists have cast parts, which makes them look more solid and more expensive. But since design is a subjective matter, and there are no obvious shortcomings, we will give everyone 2 points.

Design features

Rostal and BL equipment features a classic design. The mechanisms are assembled on base plates that are interconnected. At SAIZEN, the whole structure is tightened with stainless steel bolts, which gives it extra strength. This is a distinct advantage of Japanese chain hoists.

Important! All hoists are sharpened exclusively for vertical lifting of the load. In no case do not try to pull up the weight, as this is very dangerous. If you take a solid load, then an ordinary hoist can simply be torn in half, which poses a danger to both the operator and property. SAIZEN equipment is ready to forgive small mistakes, but even with it it is better not to risk it.

In terms of design, SAIZEN is somewhat better than analogues, for which it receives three well-deserved points, for Sibtal and BL we put two each.

Reliability (breaking strength)

An important indicator of the strength of a hand waist is the safety factor. Over time, the metal gets tired and can deform. The higher the margin of safety, the longer this process will not manifest itself. The strength of a chain is measured by the weakest link in that chain. The higher the margin of safety initially incorporated into the product, the safer it is.

In addition, it should be taken into account that a sharp jerk can occur during operation, respectively, the higher the safety margin of the chain hoist, the higher the probability that the load will not break.

BL has a safety factor of 2:1 (in tests, the figure is even slightly better - 2.2:1). For Sibtal and SAIZEN, this parameter is 4:1. Accordingly, Chinese chain hoists receive 2 points each, the rest of the participants - three.

Accessories

It should be noted that the safety factor is not a separate parameter. It directly depends on the components. With BL, you can immediately see that the suspension and hook are inexpensive, but the chain is strong. Sibtal products have powerful hooks and suspension, a high-strength chain. SAIZEN - impeccable quality suspension and hooks. Japan is embossed on the chain.

But the internal construction must also be evaluated. In BL, the gear processing is done without any complaints, smooth, without burrs and shells, the hardening is relatively good. At Sibtal it is clear that the gears are processed with high quality, no burrs and shells, it is immediately clear that the hardening is very good.

SAIZEN is simply the standard of Japanese quality. Everything is done perfectly evenly, clearly and beautifully. The hardening is super-deep, in addition, all gears have an oxide-phosphate coating, which increases their corrosion resistance. In addition, the friction element is reinforced, and the thickness of the brake mechanism reaches 3 mm (for conventional hoists, the figure reaches 2 mm).

SAIZEN has a larger gear ratio than most other chain hoists, including Sibtal (in fact, this means that there are more teeth on the pinion gears, this provides a smoother ride, increased reliability and increased mechanism life, since the pressure on each the gear tooth is smaller). The gaps are perfect.

Structurally, SAIZEN outperforms analogs a lot, for which it gets 3 points. Sibtal is somewhat worse in this regard, so we put a deuce on these chain hoists, well, BL has 1.

Quality of steel

Let us now evaluate the reliability of steel. BL has a 2:1 tensile test result. These are not very outstanding characteristics, so if you often work with this hoist with an increased load, then metal fatigue will occur earlier than other samples. Problems may arise in the chain, hook, fingers, etc. In any case, this will lead to breakage or emergency situations. Thus, Tal gets 1 point.

Sibtal is quite reliable, because with the help of a model with a carrying capacity of 1 ton, 1.5-ton loads were lifted without problems. Safety margin 4:1, which indicates durability. Average service life - 7 years at observance of all rules of operation. We give 2 points.

SAIZEN is highly reliable. During dynamic tests, it withstands an overload by 2. 5 times. Solid trio.

Ride

BL and Sibtal demonstrate more or less the same parameters in this regard. Ride is good, no jerks. 2 points for each hoist. SAIZEN demonstrates outstanding performance here, everything works like a clock.

Regulatory Compliance

BL is manufactured in accordance with Chinese regulations, the credibility is not too high, and there is no normal opportunity to read the documents, so 1 point. SAIZEN has a similar situation, but the confidence in Japanese standards is higher, so a deuce.

Everything is fine with Sibtal's documents, as the equipment is manufactured according to the Russian TO, which is indicated on the nameplates and in the passport. Also, Sibtal chain hoists comply with all the Technical Regulations of the Customs Union. Since everything is clean and transparent here, we put 3 points.

Passport and instruction manual quality

BL has a manual in Russian - but its quality is not very high. There is actually no passport, but for an economy class this is normal. 1 point

SAIZEN has a Russian instruction, the passport comes with a separate piece of paper, but it's not very convenient - it's easy to lose or throw away. 2 points.

Sibtal has everything here at the highest level. The manual is very cool and detailed, a lot of attention is paid to security issues: how to work, how not to. Everything is written not technically, but in a normal, understandable language. Marked with serial number and OTK stamp. The passport is very good, well-deserved 3 points.

Name plate

In the common people, it is called a nameplate. All important characteristics must be marked on the rating plate. Ahead in this Sibtal. The nameplate contains all the data, including load capacity, chain length, serial number, country of origin, manufacturer and serial number. There is also a sign of compliance with technical regulations - even if you lose your passport, all the information is on the nameplate. 3 points. BL and SAIZEN nameplates are much simpler, but, nevertheless, this is not critical. 2 points.

Spare parts availability

Even the most reliable manufacturers, such as Lexus and Mercedes, experience defective rates. In addition, if you do not follow the rules of operation, there is always a risk of damaging the device. As a result, there is a need for repair.

Sibtal is a domestic brand, so there will be no problems with components. We give these chain hoists 3 points. Foreign cars also have no particular problems with finding components, although everything is somewhat more complicated - 2 points.

Cost

The most affordable chain hoist is made by a Chinese manufacturer (3 points). Sibtal is 30 percent more expensive (2 points). SAIZEN's products cannot be called budgetary, so we give them a one.

Value for money

Sibtal is our leader here. The equipment is very reliable, safety margin is four to one, good components, smooth running, average service life is seven years. At the same time, everything costs not much more than the Chinese counterpart with a margin of safety of 2: 1. BL has serious advantages in terms of price, but in a number of important indicators, tal is inferior to both Sibtal and SAIZEN. Japanese lifting equipment is better than competitors in terms of technical parameters, but you will have to overpay 40-60 percent for this.

What we have as a result

So, after counting all the points. We have the following picture:

• BL - 21;
• SAIZEN - 28;
• Sibtal - 30.

Thus, the Sibtal trademark becomes the leader. By the way, the goal of the company is the production of hoists with good characteristics at the best price. Indeed, we get a good balance between cost and quality. By the way, Sibtali has a more budgetary analogue of Rostal, which practically does not differ in technical parameters, but is cheaper.

At the same time, when choosing a suitable hoist, one should not be guided only by ratings. For example, if you need ordinary budgetary lifting equipment for the implementation of an urgent object, there is no point in overpaying - BL chain hoists are enough. This purchase is well worth it.

But for long-term and systematic work with weights in conditions of increased intensity, with weights close to the nominal value, you can take Japanese equipment. After all, SAIZEN is a guarantee of quality. Yes, you will have to pay extra, but in time it will pay for itself.

If you have any questions, please contact us. Cargo Mechanics consultants are always ready to help their clients!

Table of tire volumes and weights. Weight of rims

Many drivers, when choosing tires for their cars, often pay attention to their dimensions, height and type of tread, seasonality, indexes and some other parameters indicated on the side surface of the wheel. At the same time, one of the most important parameters has always been the weight of rubber, because the dynamics of the vehicle, the length of the braking distance and, as a result, the action of inertial forces, an indicator of fuel economy, largely depend on it.

The weight of a tire can be seen on almost any official portal of well-known brands, as it is part of the publicly available technical specifications. In addition, experts have long established that, regardless of the structure, manufacturer and other initial data, all tires of the same size have a mass within a single range. In general, the weight of tires, as a rule, varies under the influence of the following parameters:

Tires for passenger cars

• How much does a wheel weigh and what does this weight depend on? First of all, this is the density of the rubber compound, which may vary depending on the manufacturer of the product, seasonality and technological features in the manufacture.
• The presence of an internal wheel carcass for increased strength and rigidity of the tire, depending on the load index, speed and wear resistance. So, for example, a high-strength tire model can be reinforced with several metal spider webs, which add additional weight to the tire.
• Tire size also affects its weight, and not only the diameter that is familiar to drivers, but also two other measurements. This means that an R15 tire with a width of more than 200mm and a tire profile height of 80mm could well weigh more than a low profile R17 wheel.
• No less important role in the formation of tire weight is played by its purpose, since a sports tire with an almost flat sole differs in weight from a mud tire with tractor treads, even if both wheels have identical dimensions.

Standard tire composition

• If the tire has increased strength characteristics and reinforced side cord, it is almost certain that the tire has more plies than the standard counterpart, which also increases the weight of the rubber.

To make the choice of tires more objective, each driver must know the weight of the wheels and choose the most convenient tire parameters for himself. So, for example, if a small car with an engine power of less than 60 liters. With. a reinforced tire will be installed, its severity will even affect the traction properties of the vehicle. If high-speed driving is important for a motorist, then on heavy tires he will never be able to develop the dynamics limiting for a given vehicle.

Tire weight table

Low profile rubber

To understand the relationship between wheel dimensions and weight, drivers should refer to specially compiled tabular materials that show all the basic tire parameters that affect this indicator and, accordingly, the average wheel weight for each dimension.

Tire weights, a table with the most popular parameters such as tire sizes, weights and volumes is shown below.

Tire width, mm	Tire profile height, mm	Tire seat diameter, inches	Tire volume range for given parameters, m³	Weight range for given wheel parameters, kg
145	65	13	0. 038–0.042	5.1–5.3
165	70	13	0.049–0.051	6.1-6.3
185	70	13	0.059–0.061	7.5–7.7
195	60	13	0.06–0.062	7.9-8.1
215	50	13	0.079–0.081	9.6-9.8
155	65	14	0.049–0.051	5.6-5.8
175	60	14	0.059–0.061	6.5–6.7
185	55	14	0.06–0.062	6.9–7.1
195	60	14	0.069–0.071	8.3-8.5
205	70	14	0.079–0.081	10.1–10.3
215	65	14	0. 089–0.091	10.4–10.6
225	70	14	0.98–1	12.7-12.9
165	65	15	0.059–0.061	6.9–7.1
175	65	15	0.06–0.062	7.2-7.4
185	60	15	0.069–0.071	8.2-8.4
195	55	15	0.07–0.072	8.8–9
205	65	15	0.088–0.09	9.5–9.7
215	60	15	0.089–0.091	11.3–11.5
225	60	15	0.099–0.1	10.8–11
235	70	15	0.119–0.121	14.9-15.1
255	65	15	0. 129–0.131	17.8–18.2
175	60	16	0.069–0.071	7.5–7.7
185	60	16	0.07–0.072	9.1-9.4
195	55	16	0.079–0.081	8.6-9.2
205	55	16	0.081–0.083	9.1-9.4
215	55	16	0.089–0.092	9.8–10.3
225	50	16	0.09–0.094	10.6–11
235	50	16	0.1–0.104	10.9–11.3
245	45	16	0.102–0.106	11.4–11.8
255	40	16	0.111–0.115	16.2-16.6
265	40	16	0. 136–0.14	18.4–18.8
195	40	17	0.071–0.074	8.4–8.7
195	45	17	0.073–0.077	9–9.3
205	55	17	0.088–0.091	10.5–10.9
215	65	17	0.11–0.114	13–13.4
225	60	17	0.112–0.116	13.5–13.9
235	60	17	0.119–0.123	12.8–13.2
245	55	17	0.121–0.125	12.9–13.3
255	55	17	0.122–0.128	13.1-13.4
265	50	17	0.124–0.13	13.2–13.6
275	50	17	0. 14–0.141	18.4 - 19
205	40	18	0.079–0.081	8.9–9.2
215	55	18	0.099–0.102	11.4–11.8
225	55	18	0.108–0.112	12.4-12.8
235	60	18	0.129–0.133	16.1-16.6
245	60	18	0.148–0.154	16.7–17.2
255	60	18	0.151–0.157	16.8–17.4
265	60	18	0.158–0.164	17–17.6
275	65	18	0.198–0.204	18.7–19.4
285	65	18	0.208–0.218	19.9–20.7

According to the weights and volumes of tires in the table, motorists just need to select the tire parameter they are interested in for their vehicle, and then multiply the corresponding weight of one tire by 4. In this way, you can find out the mass of all tires that need to be installed on the vehicle.

Wheel assembly

Mass of tires for trucks

Many car enthusiasts are wondering how much tires for trucks weigh, which plow Russian federal highways in large numbers.

Note!

It must be said right away that these wheels are several orders of magnitude superior to passenger tires in terms of geometric parameters, but that's not all - they have a much higher wear resistance index, which is achieved due to a larger number of rubber layers in the sole and side cord of the tires. Because of this, the total volume of the rubber compound, which is spent on the manufacture of such a tire, significantly exceeds the same indicator for a tire of a smaller dimension, and, of course, such a product has a relatively large mass.

So, the main size range of tires and the mass values ​​corresponding to them are shown in the following table.

Tire size	Tire volume, m³	Tire weight, kg	Tire size	Tire volume, m³	Tire weight, kg
10.00R20	0.264	52.4	275/70/R22.5	0.221	51.2
11.00R20	0.32	65.7	275/80/R22.5	0.239	51.9
11.00R22.5	0.384	51.8	285/70/R19.5	0.191	43.6
12.00R20	0.457	71.5	295/60/R22.5	0.301	62.7
12.00R24	0.315	79.7	295/75/R22.5	0.267	57.4
12.00R22.5	0.366	64.7	295/80/R22.5	0.288	63.5
13.00R22.5	0. 528	70.6	305/70/R19.5	0.196	45.6
14.00R20	0.533	104.8	305/70/R22.5	0.284	61.5
205/65/R17.5	0.127	14.9	315/60/R22.5	0.299	63.2
205/75/R17.5	0.131	16.1	315/70/R22.5	0.353	64.3
215/75/R17.5	0.148	26.4	315/80/R22.5	0.327	71.1
235/75/R16	0.129	15.9	365/80/R20.5	0.436	74.7
245/75/R17.5	0.134	22.3	385/55/R22.5	0.377	75.1
245/75/R17.5	0.141	29.4	385/65/R22.5	0.383	76.3
265/70/R17. 5	0.148	30.7	385/65/R22.5	0.378	76.7
265/70/R19.5	1.152	34.5	425/65/R22.5	0.479	84.8
275/70/R17.5	0.164	32.3	435/50/R19.5	0.362	63.3
275/70/R19.5	0.177	39.7	445/65/R22.5	0.561	96.4

Thus, if a full-fledged truck has 26 wheels by 9axles, the mass of tires on them can exceed 2 tons, but this has little effect on its cruising speed, since the total curb load from its own weight and the goods transported can be ten times greater.

Truck wheels

How to find out the mass of the complete wheel

Note!

Unfortunately, at the factory, manufacturers almost never insert the tire weight into the marking line, which indicates the size range, indexes and other rubber characteristics, and motorists have to look for this parameter on their own in the catalogs of a particular tire brand. In addition, it is not the mass of the tire that is important for the driver, but the total weight of the wheel assembly, since on the basis of this value it is possible to select the value of inertial forces and determine the braking distance of the car or the risk of skidding.

So, this indicator consists of the following parameters:

• The weight of the rim, which also varies from the dimension, density, grate filling, that is, the amount of metal is important here. In addition, it is very important to know the manufacturing method and the type of metal alloy embedded in the product. Forged versions made of steel are heavier than alloy wheels or forged wheels.
• Tire weight, which is determined according to the tables above, depending on the dimension and other parameters of the tire.
• Balancing weights, which for heavy trucks can weigh several kilograms, and for passenger cars - rarely exceed 100 grams.
• Nipple and tube (if the design of the tire beads allows it to be installed, since most wheels in recent years are still made in the tubeless version.
• Some motorists, if their tires have damage, signs of severe wear or hernia in the side or end part, use special fluids - sealants, which fill the space inside the wheel. So, when driving, these compounds evenly cover the entire inner part of the cylinder and prevent the loss of pressure in the tires, since their viscous structure completely clogs even microscopic cracks or punctures.
• If the wheels are in a stamped version, then they are often put on decorative caps made of plastic, steel or rubber, the mass of which is also taken into account the total weight of the wheel.

Largest and heaviest truck tires

• In the face of technological progress and innovative technology, some tire shops offer drivers to inflate tires with pure nitrogen. They motivate this by the fact that, unlike air, it has a lower density and, accordingly, tires with a lower weight will improve the dynamic qualities of the vehicle and reduce fuel consumption.

Please note!

Some drivers believe that air under pressure in a tire also has mass, and of course this is partly true, but compared to the total weight of the wheel assembly, this figure does not reach up to 1/1000 of the total mass.

How much does an R16 or R17 tire weigh? To understand what the mass of the wheel assembly is, then, depending on the material of the disk, the tire mass given above simply needs to be multiplied by a correction factor from 1.6 to 2. Thus, if the weight of the R16 wheel assembly for a passenger car is about 11 kg , then the cast wheel assembly will have a mass of approximately 17–18 kg. At the same time, the weight of one R17 tire can be 13 kg, and on the disk it will be approximately 20 kg.

The mass of tires is a conditional value, since it can fluctuate for different manufacturers, and a motorist can determine the exact weight of the wheels for making some decisions only by experimenting in kind, that is, banal weighing after installing the tire, balancing and forcing pressure into it .

The total weight of the car is the sum of the sprung and unsprung weights. is included in the unsprung mass and is an extremely important, one might say, defining characteristic in the dynamics of a car. The thing is that the unsprung mass makes a vertical movement relative to the car body, just remember how the chassis behaves when driving over bumps. When a car moving at speed hits a bump, the unsprung mass rushes up, imparting kinetic energy to the vehicle body, while the sprung mass must compensate for this push. That is why the balance of sprung and unsprung mass is very important, which should be distributed in a ratio of 85/15. From the foregoing, it is logical to conclude that the smaller the non-dessor mass, the smoother the car moves. However, it is very important that this softness does not turn out to be prohibitive, otherwise the wheels will simply stop holding the road properly. As noted earlier, the weight of tires is the main component of the unsprung mass, which means that when chasing dynamic performance, you should not forget about the correct weight of rubber.

What is the best tire weight?

It is impossible to unequivocally answer the question of what tire weight is better. It all depends on many factors. In order to try to clarify this issue, one should recall such a physical concept as inertia. Inertia is a measure of resistance to change. When the driver presses the gas pedal, the vehicle's engine spins the wheels, while a certain amount of the energy generated by the engine is spent on overcoming the weight of the wheel, the main part of which is enclosed in tires. It turns out that the lighter the installed tires, the easier the car spins the wheels, which means it picks up speed faster. In a word, if the weight of the tires has practically no effect on the maximum speed of the car, then in its time of gaining a certain speed, these “rubber” kilograms play one of the main roles. As a rule, the average mass of a wheel on civilian cars is slightly less or slightly more than 19kg. These figures can be called the golden mean suitable for the average city dweller who does not go into the details of the dynamic characteristics of his vehicle and cares more about his ability to deliver from home to work and back.

How to choose the right tire weight?

First you need to familiarize yourself with the tire size recommended by the car manufacturer, it is not recommended to ignore it. The size is indicated in the operating book. Most often there are two recommendations - for summer and winter. Tire size largely determines their weight, but not without exceptions. To date, tire production technologies have stepped forward and those sizes that were characteristic only for summer tires in the early days can now be found among winter options. Conditionally tires can be divided into two categories:

• For everyday driving, the choice of tires from the comfort segment will be optimal. Such rubber can be described as reliable and durable. These tires have an average weight, the manufacturer tries to keep the balance.
• If you have to travel frequently on the highway, it is best to choose high-speed tires from the premium segment. If they do not differ in increased durability, then there is no point in comparing the comfort segment with them in terms of reliability of control. As a result, they are light in weight.

Of course, there are other types of tires, but they belong to highly specialized categories. For example, because of their high cost, not very popular eco-tires with a long resource. There are also sports tires that have high resistance to extreme overloads. To sum up: it will be much more efficient in operation to choose tires based on the purpose of use, and not on weight.

What affects the weight of tires?

To determine the weight of car shoes, there are tables in which the standard size and volume are correlated with weight. These tables can and should be used. However, we should not forget that the weight may vary depending on the manufacturer.

What factors affect tire weight?

First, as already mentioned, this is the size. The larger the size, the heavier the tire and vice versa, the smaller, the lighter it is. Although, this is not and is not always the case, because the decisive fact here will be the tire production technology.

Second is the thickness of the sidewall of the tire. In addition to the mass, the thickness of the sidewall determines the resource. The thicker the sidewall, the longer the rubber will last. There are tires with a reinforced sidewall, their resource is impressive, and if buying such tires you can save money due to their slow wear, then such tires will definitely not positively affect fuel consumption.

Thirdly, this is the load index. The load index is a number that characterizes the maximum load on the tire. The index does not always correlate with weight. In this case, the composition of the rubber from which it is made is much more important. Today, there are lightweight tires on the market that can withstand very heavy loads, while also having increased wear resistance.

One of the important parameters that affect the performance of a vehicle is the weight of the rims. Modern motorists understand that by reducing the weight of the discs (by installing lighter discs on the car), it is possible to increase the smoothness of the ride, improve the controllability of the vehicle, as well as the dynamic characteristics (braking and acceleration speed).

Also, the durability of the suspension depends to a certain extent on the weight of the disks, the absence of breakdowns of its elements for a long time. In this article, we will consider in detail the mechanism of the influence of the mass of disks on the performance of a car, in addition, we will talk about how the weight of disks differs depending on the material of their manufacture, as well as the technology used.

Sprung and Unsprung Weights

In order to understand how wheel weight can affect vehicle handling, performance, ride and suspension durability, it is necessary to understand the forces acting on a vehicle while it is in motion. One of the main parameters that engineers are guided by when developing a suspension for a particular car model is the ratio of the sprung and unsprung mass of the car. What it is?

The spring (spring, shock absorber) is an elastic suspension element that softens the shocks that occur when the car moves over uneven road surfaces. Thanks to this element, shocks are transmitted to the body only to a small extent, which determines the smooth running and comfort of movement. The sprung mass is the mass of the parts of the vehicle that are separated from the road surface by the spring (body), and the unsprung mass is the mass of the parts that are between the road surface and the spring (discs, tires, hubs, brake system elements).

When the vehicle hits a bump, the wheel absorbs the impact and transmits it through the shock absorber to the body. In turn, the body with its weight (through the shock absorber) compensates for this impact, and the wheel returns to its original position. The smaller the unsprung mass, the less force there is on the body, in addition, less effort is spent when maneuvering. However, if the weight of the body is too low relative to the weight of the wheel (all unsprung elements), then the wheel will not be able to quickly return to its original position, which is fraught with loss of control (skidding).

Driving dynamics

The vehicle's ability to quickly accelerate and provide effective braking is also dependent on unsprung weight. The more the wheels weigh, the more energy is needed in order to increase the speed of their rotation (which ensures the acceleration of the car), the same applies to the braking process.

The engine can only produce a limited amount of power at any one time. Therefore, the more the wheels weigh, the more engine power is used to spin them, and less power is left for fast acceleration. In numbers, it looks like this: with an increase in the weight of the wheels (unsprung mass) by 1 kg., The car loses 1% of power. Therefore, to increase the acceleration speed and enhance the braking efficiency, lightweight rims are installed; with light rims, the car accelerates faster.

Ride

The ratio of sprung and unsprung weight also affects the ride, there are two ways to achieve the ideal ratio - increase the sprung mass or reduce the unsprung mass. The first method has certain drawbacks, since an increase in the weight of the car (for example, due to additional ballast in the cabin or trunk) reduces the acceleration dynamics. Therefore, most often they try to lighten the wheels as much as possible by reducing the unsprung mass.

There are quite definite indicators - a reduction in the weight of the wheel (each of the wheels) by 1 kg. has the same effect as reducing the body weight by 40 kg. That is, reducing the weight of each wheel by 4 kg. (total reduction in unsprung weight of 16 kg.), you can achieve the same smoothness that is observed in the presence of several passengers in the cabin. But at the same time, the car picks up acceleration much faster than in the loaded state (as if passengers were actually sitting in the cabin).

Rims weight and suspension life

The weight of the rims (and other unsprung components) determines the durability of the suspension components. When driving over uneven road surfaces, bumps occur that are damped by the suspension. Moreover, not only shock absorbers, if the impact is strong, then other suspension elements also take on part of the impact energy. And the higher the unsprung mass, the greater the load on the suspension. Naturally, an increase in load does not contribute to the durability of the nodes that take on the blows.

Which wheels are lighter (forged, cast, stamped)?

Stamped steel rims are the heaviest, which has become a common reason for replacing them with light alloys immediately after purchasing a new car. However, steel wheels have a minimal cost, so they continue to occupy a strong position in the automotive aftermarket.

Aluminum alloy wheels is about 20% lighter than steel wheels, manufacturing technology allows you to realize almost any designer's fantasies. In addition, alloy wheels provide better cooling of the brake system.

Forged wheels are the lightest. Hot forged wheels, on the other hand, are 20% lighter than cast wheels and 50% lighter than stamped steel wheels. The main obstacle to their unconditional dominance among other types of auto disks is the price - forged disks are somewhat more expensive than cast ones, and much more expensive than steel ones.

Magnesium alloy wheels have a special place on the market, these wheels are somewhat heavier than forged, but much lighter than aluminum wheels. However, magnesium rims are not widely used because they are less durable than aluminum rims and are not repairable if damaged. Magnesium discs are purchased by fans of fast driving and dynamic maneuvering, owners of sports cars.

Average rim weight

The ratio of weight and dimensions of rims made of different materials is well illustrated in the table. The data presented in the table was obtained on the basis of a comparative analysis of the weight and dimensions of more than 4 thousand models of auto disks from various manufacturers. Each mass indicator is obtained by obtaining the arithmetic average from the total mass of disks of the same size (diameter) and one type (material of manufacture) of many models from different manufacturers.

	Average weight per disc, kg
Diameter, in.	Cast	Forged	Steel	Cast magnesium
R10	3.63			2.30
R12	4.17		4.50	3.08
R13	5.40	3.58	7.26	3.83
R14	6.29	3.94	8.01	4.38
R15	7.32	3.69	9.56	5. Learn more Tire rim leaks How does bmw tire pressure monitor work How to adjust shocks on polatis atv Modern car trivia What size is my tire in inches Rubber tech europe How to remove tire from log splitter Video on how to change a tire How important is the speed rating on a tire How to fill tubeless tire Yamaha atv how to drain water carburetor