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Tire valve stems are the valves located in a vehicle’s wheel where the tires are inflated from. They contain a spring loaded valve core that seals itself using the air pressure inside of the tire. Over time valve stems may get old, crack, become brittle, or begin to leak, causing larger problems with your tire and your driving experience.
When valve stems begin to leak, the tire will no longer hold air. Depending on the severity of the leak, the tire may leak air slowly, or in more sever cases not hold air at all, warranting replacement of the valve stem.
In most cases the the fastest way to replace a valve stem is to take it to a tire shop and have them remove the tire and replace the valve stem using aid of a tire machine. However, for instances where this is not an option, a tire can be removed and the valve stem changed manually. In this step by step guide we will cover how to remove a tire from a wheel manually, using a tire iron, to replace the valve stem.
Materials Needed
Step 1: Loosen the lug nuts. Loosen the lug nuts of the wheel from which the valve stem is going to be replaced.
Step 2: Raise the car on jack stands. Set the parking brake, and then raise the vehicle and secure it on jack stands.
Step 3: Remove the wheel. Once the vehicle is raised, remove the wheel and set it flat on the ground with the outside of the wheel facing up.
Step 4: Deflate the tire.
Remove the cap from the valve stem, and then remove the valve stem core using the valve stem removal tool to release the air from the wheel.
Once the valve stem core is removed the tire should deflate on its own.
Step 5: Separate the tire’s bead from the wheel. Next, use the sledgehammer to break the tire’s bead free from the wheel.
Hit the sidewall of the tire using the sledgehammer in the same place until the bead breaks loose.
When the bead breaks loose you may hear a crack or popping sound, and you will see the inside lip of tire visibly separate from the lip of the wheel.
Once the bead has been broken, continue around the tire with the sledgehammer until the bead is completely broken all the way round the tire.
Step 6: Lift the lip of the tire up from the wheel. Once the tire’s bead has been broken, insert your tire iron between the edge of the rim and the inside lip of the tire, and then pry upward to pull the lip of the tire over the edge of the wheel.
Once you have pulled the lip of the tire over the edge of the wheel, work the tire iron around the rim until the entire lip of the tire is off the rim.
Step 7: Remove the tire. Grab the tire by its removed lip and pull it upward so that the opposite lip that was at the bottom of the wheel is now touching the top edge of the rim.
Insert the tire iron in between the the tire’s lip and the edge of the wheel and pry upwards to pull the lip over the edge of the rim.
Once the lip is over the edge of the rim, work the tire iron around the edge of the wheel until the tire is removed from the wheel.
Step 8: Remove the valve stem. Once the tire is removed from the wheel remove the valve stem. Use the needle nose pliers to pull the valve stem free from the wheel.
Step 9: Install the new valve stem. Take your replacement valve stem and install it from the inside of the wheel. Once it is in position use the needle nose pliers to pull it through into place.
Step 10: Reinstall the tire. Reinstall the tire onto the wheel by pressing it down over the the rim until the bottom bead clears the edge of the rim.
Then press the side of the tire down underneath the edge of the wheel, tuck your tire iron in between the lip of wheel and the bead, and then pry the bead over the lip the of the wheel.
Once the bead clears the lip of the wheel, work your way round the entire wheel until the the tire is completely installed on the wheel.
Step 11: Inflate the tire. Once the tire has been re-installed onto the wheel, turn on the air compressor and inflate the tire to the correct specification.
For most tires, the recommended pressure is between 32-35 pounds per square inch (psi).
Step 12: Check for leaks. Once the tire is properly inflated, double check to make sure that there are no leaks of any kind, and then reinstall the tire onto the vehicle and lower it off of the jack stands.
For most cases, the easiest course of action to replace a valve stem would be to simply take it to a tire shop, have the tire removed with a machine, and then have the valve replaced.
However, in the instances where that is not an option, a valve stem, and even a tire, can be removed and replaced manually with the correct tools and the correct procedure. If you find that there is a leak or damage in the tire and not just the valve stem, you may want to replace the tire entirely.
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It’s not uncommon that valve stems start leaking only after a few years in use due to dirt, corrosion, road salt, or degraded rubber. Luckily, they are relatively cheap and easy to replace at home.
The same basic principles displayed in this guide apply to most tubeless tires, whether on an ATV, car, lawnmower, or snowblower.
A tire shop may charge around $20 to $30 to change a valve stem. If you do the job yourself, it will cost about 5$, depending on what tools you choose and have at your disposal.
I’ve made this guide for those that wish to do the job at home to save a few bucks or don’t have a tire shop nearby.
We’ll be looking at two different methods; one where the wheel needs to come of the room, and a second, where the valve can be replaced with the tire still on the rim, using a specialist tool.
You can replace a valve stem with the tools most people already have in their garage. However, to make the job easier, faster, and safer, we recommend that you get a couple of cheap tire tools as well, available at most auto supply stores
Valve stems come in a range of sizes.
They vary in diameter and length, depending on the size and style of wheel you have.
A design-number is used to categorize the various types and sizes of valves available.
Let’s use the most common valve for ATVs as an example: TR-412.
| Industry Valve Number | Maximum Inflation Pressure (PSI) | Effective Length (in) | Rim Hole Diameter (in) |
| 412 | 65 | 0. 88 | 0.453 |
| 413 | 65 | 1.25 | 0.453 |
| 414 | 65 | 1.50 | 0.453 |
| 415 | 65 | 1.75 | 0.453 |
| 418 | 65 | 2.00 | 0.453 |
| 423 | 65 | 2.50 | 0.453 |
| 415 | 65 | 1.25 | 0.625 |
| 425 | 65 | 2.00 | 0. 625 |
You will find the design number of your old valve stem stamped on the bottom of the stem. This does, however, require removing the valve stem or removing the tire from the rim.
TR412 valve stem.Alternatively, you can measure the old stem and compare your findings with the table above.
You can move straight to step 2 if you already know how to remove the wheel from the vehicle safely.
Remove the valve cap, then use a valve stem core removal tool to unscrew the valve stem core from the valve stem. This will release the air from the wheel.
Remove the valve stem core, using a valve stem core tool.If you don’t have a valve stem removal tool at hand, you should be able to unscrew the core with a pair of small needle-nose pliers. Just place the pliers on the flat portion of the core, and turn anti-clockwise. In a pinch, you could even use a pair of tweezers, as long as they fit.
Next, you need to break the tire bead from the rim.
Break the tire bead to gain access to the inside of the rim.I tend to use my portable tire changer, but there are several ways you can de-bead a tire. Click here to find a list of alternatives for home mechanics to choose from.
After successfully de-beading the tire, place your knee or a wood block between the rim and the tire for easy access to the bottom portion of the valve stem.
You only have to de-bead the side of the wheel that has the valve stem in it. I removed the tire from the wheel completely to take better photos for this post, but this is unnecessary.
To remove the old stem, you have two options.
You can use a sharp knife to cut it, either on the outside or inside the rim. Cut as close to the rim as possible without scratching the rim itself.
Use a razor blade to cut the old valve stem flush with the inside of the rim.
After cutting, you should be able to pop out the remaining piece of the stem easily.
Remove the cut valve stem from the rim hole.Alternatively, you could use a pair of vice grips to pull the plug out from the inside of the tire. Use this method if you plan on reusing the valve stem.
Spray some soapy water on both the outside and inside of the rim as lubrication. Place the grips over the stem’s thick portion and use leverage to pull the plug out. You may need to reposition the tool several times for better grip until you get the core out.
Before installing the new valve stem, you need to lube the rubber portion to slip into place much more effortless.
Use dish soap, some vegetable oil, or spray the new valve with a generous amount of soapy water.
Notice: Do not use any petroleum-based products such as oil or grease as it will degrade the rubber over time.
Lube the valve stem with dish soap.
Insert the new valve stem from the inside of the rimInsert the valve stem through the hole from the inside of the rim. Make sure the hole is clean and free of debris. The threaded part should protrude on the outside of the rim.
Insert the valve stem from the inside of the rim.To pull the plug in place, you will need a valve stem pull tool. You can find them at most auto supply stores at an affordable price.
These tools come in a variety of shapes, but all work with the same basic principle.
The threaded portion of the tool mounts to the valve stem core’s threads to get a good grip.
Attach the valve stem tool to the threaded portion of the valve stem.Do not use pliers to pull the valve stem, as this will likely damage the soft copper threads.
Use the tool to pull the valve stem straight out from the wheel until the small rubber groove on the valve stem pops in place.
The tire is seated back on the rim by using compressed air. This will press the tire outwards until it pops over the tire bead and rests against the rim’s lip.
Lube the tire and tire bead with soapy water. This allows you to seat the tire without using excess pressure, which could blow out the tire’s side.
The trick to succeeding is by adequately closing the gap between the rubber and the rim as you start adding air.
On softer and smaller tires, you should be able to close the gap manually. However, on tires with stiffer sidewalls, you may not be able to create a tight enough seal to build up pressure.
I prefer using the ratchet strap trick as this works great most of the time.
Using a ratchet strap when seating the tire will helpforcing the tire sidewalls outward.
Use a ratchet strap to press the tire walls out against the rim. Attach the strap as shown in the picture and tighten it until the tire touches the rim.
With the valve stem core removed, add air until the bead pops in place. Never exceed 7-8 PSI with the strap attached.
As soon as the tire has seated, deflate the tire, remove the strap and install the valve stem core before inflating the tire according to spec.
You are now done and can install the tire back on the vehicle.
The hardest part of replacing a valve stem from the inside is getting the tire off the rim.
If you don’t have the tools or don’t feel comfortable with the idea of de-beading a tire, consider getting a valve changing tool kit designed to replace a valve stem from the outside, like this one from Amazon.
It can be a bit fiddly to get the hook past the old valve stem. Use plenty of soapy water as a lube, and be careful not to damage or scratch the rim as this could cause a leak.
The tire valve is the tip that inflates the tire and ensures it is sealed. It is attached either directly to the inner tube or to the wheel rim. The tire valve is damaged while driving and must be replaced at the same time as the tires.
La d'un valve tire A car tire is a rubber tip that sits on the tire. The tire valve, fitted with a plastic cap, has two main functions:
The tire valve can be attached to the inner tube or to the rim, as is the case with tubeless tire valves. It comes in two varieties:
When the pressure is too low, a warning light comes on on the instrument panel. nine0018 In short, the tire valve prevents air from escaping from the tire, but also prevents dirt from entering the tire. Hence, it also plays a protective role. Finally, it allows, in particular, to make tire pressure and then maintain this pressure by keeping the air inside.
One of the functions of a tire valve is to seal it by keeping air inside the tire. But over time and miles, it can get worse as it is subjected to the pressure and centrifugal force of rolling tires. nine0005
When damaged, the tire valve can cause Air leakage and pressure drop tire. The main cause of tire valve leakage is its age, and the mechanism it contains eventually fails.
The risk of tire valve failure is the slow release of air from the tire.
No matter how hard you apply pressure and re-inflate it, it will continue to lose air. However, driving with improperly inflated tires is dangerous: loss of traction, increased stopping distance, reduced tire life and risk of bursting. nine0005
Therefore, the valve in a leaking tire must be repaired or replaced. We also recommend replacing tire valves every time you change tires.
To change the tire valve, you must disassemble the wheel and separate the tire from the rim. You must use valve stem extractor to replace the latter. However, there are also CIP tire valve replacement tools, but these are often not compatible with electronic valves. nine0005
Material:
nine0005 Finish loosening the wheel nuts and remove it. Lay it on the floor with the outer side up. Remove the tire valve cap, then remove the core with a valve stem remover. Let the tire go down.
After the tire is deflated, you must detach it from the rim. You can use a sledgehammer all over the tire. Then, using an iron, remove the tire from the rim by inserting it between the tire and the edge of the rim.
After separating the tire from the rim, you can remove the stem from the tire valve. Use pliers to remove the old valve and install the new one in its place. You can then put the tire back on the rim and inflate it to the pressure recommended by the manufacturer. Complete the wheel assembly and check the tire valve for leaks.
The price of a tire valve depends on the type of valve, its size and of course where you buy it.
You can easily find a new valve at a specialized automotive store or on the Internet. Just make sure you buy the right valve for your tires. nine0005
Calculate the price of just a few euros for a set of tire valves. To have your valves replaced by a professional mechanic, calculate between 10 and 15 € with a tire change.
Now you know everything about the tire valve! As you already understood, its role is not only to allow you to inflate your tires but also to protect them from water or dust that can penetrate them. The valve of the tire also ensures its tightness, so it must be changed periodically. nine0004
Home » Rims, tires, wheels » Tire valve: role and change
Car tires are one of the main parts of a car. In addition, it is the only part of the vehicle that has contact with the road surface. Perhaps your tires have saved you and your car many times in various situations.
Unfortunately, but it is a fact - tires are poorly maintained and rarely checked by car owners and unscrupulous car services. And if they are checked, then only during maintenance. nine0005
We hope that our tips will help you get the most information you need to achieve the best performance and the safest driving experience for you and your family.
As a suggestion, why not immediately after washing? This way you can get a better view of the sidewalls and surface of the tire. Raise the wheel to check all sections of the tire. To do this, we recommend using safe lifts (jacks). nine0005
Now we will tell you how to check tires without resorting to a jack or a lift.
The inside edge of a tire can often be completely worn out, and the remaining visible part of the tire surface can look like new. The inner and outer tire edges of both the front and rear wheels should be carefully checked. nine0018 
Tires may wear unevenly. Congratulations! You have performed a general check on the condition of your tires. Finally, don't forget to check your tire pressure!
Now you can diagnose the condition of your tires yourself or turn to professionals.
