Interested in our tire management solutions? Check out our frequently asked questions for more detailed information on our products and services.
What is cold inflation pressure (CIP)?
The cold inflation pressure is the tire pressure when the air in the tire is “cold,” roughly the same temperature as the air outside of the tire.
How do I know when the tire is cool so I can get an accurate CIP measurement?
Examples of things that will affect the CIP are direct sunshine on the tire and tire heating due to driving. To get an accurate measurement of CIP the tire must be resting and not exposed to direct sunlight for at least 3 hours.
How much does tire pressure vary with outside temperature?
Typically tire pressure varies 2-3 psi/10 deg F. The change in pressure is because air expands when it’s warmed and contracts when it’s cooled.
How does the Halo work?
The Halo is a self-contained pump that generates pressure when rotated. It has a pendulum-like mass, similar to a self-winding watch, that hangs while the pump is rotating with the wheel. The relative rotational motion is used to create a pumping action.
Do you have to be driving a certain speed for the Halo to pump?
The Halo will pump air at all speeds. If the wheel is rolling the pump is capable of generating pressure.
Can I still check tire pressure with the Halo installed?
Yes! Actually tire pressure is easier to measure with the Halo installed because it allows tires to be measured right at the hub through schrader valves on the Halo.
Will the Halo device ever over-inflate a tire?
The Halo device will only add air until the target air pressure is achieved in the tire(s). If the target pressure is 100 psi, the pump will turn itself off when the tire pressure exceeds 100 psi.
How does Halo know when to stop airing the tire?
A key design feature of the Halo is a smart regulator that ensures it will only pump air when the tire pressure is below the target pressure setting.
So if the target pressure is 100 psi and the tire’s cold inflation pressure is 97 psi, the Halo will add air until the pressure is 100 psi and then the regulator will turn the pump off.
Does the Halo work in extreme hot and cold temperatures?
The Halo has been tested in a variety of climates, from winters in Canada to summers in Florida and everything in between. It has been designed to function in temperatures ranging from -40F to 257F (-40C to 125C).
Where can I buy the Halo?
Halo and Halo Connect are currently available on our e-shop.
How does the Halo device mount on the wheel end?
The Halo mounts directly to the axle cap or hub cap using a bracket similar to that of a hubodometer.
How long does it take to install the Halo?
An experienced tech, someone who has installed 1 or 2 Halos, can outfit an entire tractor or trailer in 20-30 minutes.
What types of vehicles does the Halo work on?
The Halo is compatible with the majority of class 7 & 8 tractors and trailers, box trucks, buses, and refuse vehicles.
Does the Halo unit work on all tire positions?
The Halo will be compatible with the majority of class 7 & 8 tractors and trailer wheels, hubs and tires. The Halo device currently is NOT recommended for use on wheels with convex shape (e.g. the steer positions of Class 7 & 8 tractors/buses). The convex shape of the Steer tire wheel end makes the Halo device more difficult to safely mount via a bracket system. We are exploring options for this wheel position and should have a solution in the future.
What is the expected lifetime of the Halo device?
The Halo will operate effectively for 500,000 miles or 10 years, depending on the vehicle’s annual mileage, under normal operating conditions.
How much does the Halo device weigh and does it cause balance issues on the wheel end?
The Halo weighs approximately 5 lbs. and will not cause wheel imbalance issues because it is mounted near the center of the wheel end (like a Hubodometer). In our real-world testing with numerous fleets spanning more than two years and driving over eight million miles, there has not been any incident where the Halo device caused noticeable wheel balance issues of any kind.
Are the hoses and connectors proven and leak proof?
The hoses and connectors are similar to those used in central tire inflation systems. They are road tested and proven to be reliable and robust for this type of application.
What is the warranty period?
The standard warranty period is 36 months.
Can an extended warranty on Halo devices be purchased?
Ask your Aperia Sales representative for further information. Extended warranty plans can be quoted for large purchases.
What is the price of the Halo?
You need one Halo per wheel end. We set Halos in truck kits. The single axle kit is ($770) for 2 Halos. The tandem axle kit is ($1,540) for 4 Halos.
What is the price of the Halo Connect?
The Halo Connect is a one time purchase of $850 for your hardware. The monthly connectivity fee is $10 a month.
What pressure can the Halo maintain?
80 – 120 PSI
Can I adjust the Halo’s pressure set point?
We set PSI for you before shipping out your Halo.
We then seal the Halo for life. This way no salt, dust, mud can get inside. Therefore the set point cannot be altered once set.
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Halo Tire Inflator
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Check out our client stories
"Halo is as close to a zero-maintenance product as you can get."
"We have seen fewer roadside calls thanks to Halo."
"Halo delivers us a strong ROI."
"We spec Halo to ensure safe stopping distances."
"Halo gives us peace of mind that our tires are taken care of."
"We’ve measured a 1.5% increase in fuel economy."
Check out our client stories
"Halo is as close to a zero-maintenance product as you can get."
"We have seen fewer roadside calls thanks to Halo."
"Halo delivers us a strong ROI."
"We spec Halo to ensure safe stopping distances.
"
"Halo gives us peace of mind that our tires are taken care of."
"We’ve measured a 1.5% increase in fuel economy."
Halo Tire Inflator
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Halo Connect
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Accessories
Service Parts
From entrepreneurs to Fortune 500s, we’re supporting our partners as they deliver day-in and day-out.
The Halo Tire Inflator uses a wheel’s rotation to maintain optimal tire pressure. It bolts on in minutes, and improves fuel economy and road safety while reducing tire expenditures, downtime, and maintenance costs.
Halo Connect pairs automatic tire inflation with predictive tire pressure monitoring (TPMS) to drive meaningful savings in casing life, fuel consumption, uptime, accident & service failure avoidance. Halo Connect uses machine learning to alert early, not often, ensuring clients have the flexibility to address tire health issues in the most convenient and economical way possible.
According to an ATA benchmark study, vehicles equipped with Automatic Tire Inflation Systems (ATIS) run two times farther without experiencing tire-related downtime. Effective tire pressure management goes a long way in reducing downtime!
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Installing Halos on your tires results in less diesel usage and less tire consumption. In fact, Halo delivers the most CO2 savings per dollar spent than any other truck technology available today.
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Industrial designer and inventor James Dyson once said: “Manufacturing is more than just putting parts together. It’s coming up with ideas, testing principles, and perfecting
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At Aperia Technologies, every day is Earth Day. It is our mission to transform the freight transportation industry through technology innovation, and our work to
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There’s a dire need to improve the nation’s infrastructure.
It might be the only topic of conversation with unanimous support these days. Everyone can agree
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The choice of both summer and winter wheels is a real quest that every car enthusiast has to go through at least once in a lifetime. When studying models from different manufacturers, it is necessary to take into account the composition of the rubber mixture, and water disposal indicators, as well as noise, efficiency, wear resistance and many other small and not very nuances. However, even after picking up the best available tires, it's too early to relax. nine0019
Photo: somanyhorses.ru
The thing is that, other things being equal, the car will “sit” on the road as intended by engineers only if not only the size of the wheels, but also the pressure in the tires is within acceptable limits.
These indicators may differ not only for different brands, but also within the model range of one manufacturer.
Photo: somanyhorses.ru
In physics, pressure is measured in pascals, but this unit has not taken root in the automotive industry - too many zeros would have to be drawn on instruments. Therefore, manufacturers use bar and psi - you can convert one unit of measure to another using coefficients.
The “atmosphere”, which is more familiar to our ears, is not found in the notation, but it is approximately equal to one bar, so they can be considered “synonyms”. On modern models, pressure is most often written in both units of measurement, but the older auto industry is not so loyal - for a long time, European brands used only bar, while American brands gravitated towards psi. Unraveling the "cuneiform" itself is not difficult at all. To get started, you should look at the dimension of the wheels and understand what kind of rubber is installed on the car. After that, a similar alphanumeric code will be found on the sticker. The inscription can stand alone or together with other sizes, it does not matter at all. In any case, to the right of it there will be several columns with numbers, followed by icons indicating the load of the machine. nine0019
Photo: somanyhorses.ru
This is one of many examples of what a sign might look like. The right edge has units of measurement, please note that bar is written in bold roman type, and psi is written in thin italics.
This stylistic decision helps to intuitively distinguish indicators from each other. We have found our tire size, now you need to select the appropriate ones from the corresponding block of numbers. It's time to get creative and decide how many passengers and luggage you travel with the most. If there are mostly only a couple of bags in the trunk and the rear seats are usually free, you can safely focus on the upper value. But in the case when the car is constantly used with a full load, you need to focus on the bottom line. nine0019
The most attentive ones managed to notice that the numbers are arranged in two columns, and this is no accident: the left one indicates the pressure in the front tires, and the right one - in the rear ones. This can be understood from the schematic drawing of the machine, which is located on top. Separate manipulations will have to be carried out by those who have different-wide tires installed. The numbers for the front and rear wheels will be "scattered" around the table.
On the "investigated" car, some of the permissible dimensions of the rear wheels even had to be taken out separately. Tellingly, the pressure for the front axle is not indicated in them, which indirectly confirms that they cannot be installed on it due to design features, as well as the layout and configuration of the nodes. When the desired values \u200b\u200bare found, it remains only to connect the compressor and pump up the tires to the desired state. The main thing is not to forget to check in what units of measurement the scale or display of the device is marked. nine0019
Above, we have already found out that the required number of atmospheres directly depends on the load of the car, so it is necessary to get the pump every time the “scenario” of the trip differs from the usual one - that is, the load either increases significantly, or vice versa. If you do not adjust the pressure, no crime will happen, however, the “habits” of the car and its handling will noticeably change not for the better, you need to be prepared for this.
Adjustments may also be required at the turn of the seasons, when the average daily temperature changes rapidly. Air tends to expand when heated and contract when cooled, and this leads to pressure fluctuations inside the wheel. It turns out that if winter tires were mounted at a temperature of about 0 ° C, then the pressure of -10 ° C will be significantly less. In this case, the wheels just need to be pumped up additionally. In summer, the situation is reversed, and often closer to June, excess pressure has to be bled off. nine0019
Photo: krylovmedia.ru
Wheel assemblies cannot be called completely sealed, air can gradually escape from them through the air valve spool and even through the junction of the disk with rubber, which is quite normal. Therefore, before the trip, it is recommended to arm yourself with a pressure gauge and check the pressure. The procedure is simple and takes very little time, but at the same time it helps not only to maintain the driving experience at the proper level, but also to save the car itself.
It is important to remember that the numbers will be accurate only when the car is on a flat surface and measurements are taken “cold”, that is, when the rubber has had time to cool to ambient temperature. Owners of garages should be especially careful, the temperature regime of which differs significantly from the street temperature - it makes sense to get a pressure gauge only at the moment when the wheels become the same temperature as the air outside. nine0019
The most obvious problem is uneven tire wear. Rubber can locally become unusable literally in a season, and it will be impossible to use it further. At the same time, reduced pressure generally negatively affects the tire resource, leading to its overrun. The unpleasant “symptoms” of low tire pressure also include increased fuel consumption and loss of stability during lane changes. In extreme cases, there is a risk that the wheel may come apart, leading to an accident in the vast majority of cases.
In addition, there is a chance that the disks themselves will suffer - when passing through an obstacle, the shock-absorbing properties may not be enough. Then the blow will fall on the disk, which can bend, and the suspension. nine0019
Photo: tires1.ru
Excess pressure is also not good for handling. The wheels turn into a ball, and there is no longer any need to talk about any longitudinal stability. With grip properties, metamorphosis also happens - the contact patch with the roadway becomes smaller and “holds on” to the coating, it turns out worse. Along with this, by the way, the braking distance also increases. In this scenario, damping can also be a problem, and if the discs remain relatively safe, then the suspension has to “work” for two, working out small bumps that are normally “smoothed out” by rubber. The most unfortunate consequences of excess pressure are the explosion of a wheel when passing an obstacle at high speed. This is the most difficult test of a driver's defensive skills.
Unfortunately, most often this exam fails. nine0019
Modern transport is trying to make life as easy as possible for its owner, so the pressure monitoring system is no longer a rarity. But, like any technological solution, there are several options for its implementation. The most “smart” of all are pressure sensors that are integrated directly into the wheel and “read” the pressure falling on the air valve. The indicators are transmitted to the head unit, and the motorist sees the real pressure almost online. This allows you to get rid of regular running around with a pressure gauge, but it will add a headache if you replace disks with non-original ones - you will either have to buy additional sensors and then “register” them into the system, or put up with their absence and the constantly arising warning about pressure loss. A less advanced system is devoid of sensors in the wheels and "draws conclusions" based on information received from the ABS.
The computer analyzes the speed of rotation of the wheels, and if one of them slowed down noticeably (this happens when there is a loss of pressure), this is an occasion to signal the driver about a possible problem. Of course, it is impossible to obtain any exact numbers with this method of "measurement", so although such functionality is useful, it will not get rid of the pressure gauge in the glove compartment. nine0019
Photo: thestuffofsuccess.com
Wheels are the only thing that connects the car with the road, so they deserve the closest attention and the most pedantic attitude. Do not spare time for an extra check of the car, and then it will not let you down even at the most crucial moment.
Announcement photos: somanyhorses.ru, proaveo.ru
Estimated trouble free halo mileage is 800,000 km. The auto-inflation system has passed serious tests - the test samples have "knocked off" a total of more than 12,500,000 km
Self-inflating tire - an idea that did not appear yesterday.
Tire companies have long been trying to develop such "shoes" that would not require constant care. It's not just a matter of convenience - low or excessive pressure in a tire reduces its life, increases fuel consumption, and also negatively affects the vehicle's controllability and its smoothness. In the worst case, this can lead to a tire burst and, as a result, create an emergency on the road. Recently, the industrial giant Goodyear has been trying to find a solution to the problem - in 2011, the company developed an "unpretentious" tire, but things did not go beyond the AMT prototype. But the American company Aperia Technologies, which was founded in 2010 by two graduates of Stanford University, nevertheless managed to implement an old dream of motorists into life. True, entrepreneurial engineers came up from the other side - they developed a compact device for auto-inflating a tire. nine0019
First, some clarity needs to be made - the invention of Josh Carter and Brandon Richardson, due to its relatively large mass and dimensions, is applicable only to large vehicles, in particular, trucks (in this case, this is most justified economically).
