Pressure Check Tire Valves
Practicality - Affordability
TireCheck™ is a tire pressure indicating valve cap for use on virtually all cars, SUVs, light trucks, and motorcycles. An affordable and practical tire safety system that is user friendly for drivers of all ages. No more fumbling for a gauge or bending over to check your tire pressure! TireCheck™ replaces existing standard valve caps.
- One Size Fits All.... 20 - 42 psi!
- Accuracy... Indicates pressure loss of 2 - 3 psi or more!
- Safety.... Enhances road handling, increases fuel economy, extends tire life!
- Constant Measurement.... A pressure loss of 2 - 3 psi will register!
Governmental agencies and tire manufacturers concerned with highway and vehicle safety have made great efforts to educate drivers that proper tire inflation conditions are a vital safety factor in reducing accidents and casualties. Recent attention to the importance of proper tire inflation has led to the adoption of current laws requiring time phased dates for new vehicles to be equipped with onboard tire pressure monitors.
Installation and Use
Inflate each tire to the vehicle manufacturer's recommended tire pressure (usually found in your owners manual, on the door edge/frame or on the inside of the fuel door of your car). Simple installation, merely screw onto existing tire valve and replaces existing valve cap. TireCheck™, will display a pressure loss by a red indicator flag above the green in the clear plastic sight-glass. TireCheck™ can be re-used over and over at various pressures, on the same car or different cars within the 20 - 42 psi range. Each time you remove and re-install TireCheck™, you will see an all green indication in the clear plastic sight-glass. TireCheck™ automatically sets itself to the new pressure:
- See all Green ? ..... Good to Go!
See any Red ? ..... Check Pressure!
Materials are of best quality and specifications for intended operating conditions and environment resistance. The rugged outer casing is made from high impact durable polymer plastic, protecting the internal parts, and providing resistance to corrosion, rain, snow, impact, heavy vibration and car wash machines. Each TireCheck™ is individually tested for performance and quality before leaving the factory.
Fail Safe
If TireCheck™ becomes inoperative, breaks off, whatever, unique design features prevent pressure loss.
Pressure Range
One size fits all for tire pressures between 20 - 42 psi, virtually all cars, SUVs, trucks, motorcycles.
Sensitivity and Accuracy
The indicator in the clear plastic sight-glass shows a red indicator flag if tire pressure drops 2 - 3 psi.
Warranty - Manufacturing Standards
Performance is guaranteed for the lifetime of TireCheck™ to the original consumer. Manufactured in Austria. Every TireCheck™ must pass individual quality control testing before it leaves the factory - 100% individual testing!
The tire pressure recommended in your vehicle's owner's manual or tire information placard (usually found on the driver's side door pillar) is the vehicle's recommended cold tire inflation pressure. The correct tire pressure has been determined by the vehicle manufacturer for your vehicle in agreement with the tire manufacturer, as the correct pressure for that specific vehicle.
The correct psi for a specific application is always set at "cold." This means pressure should ideally be checked in the morning before the vehicle is driven more than a few miles, or before rising ambient temperatures or the sun's radiant heat affects tire pressure. Note: "cold" means not driven for at least an hour or no more than 1-2 miles at low speed.
The key here is that the correct tire pressure, measure in PSI (pounds per square inch) is a pressure reading and not a measurement of air volume.
A tire is like a balloon... or rather is a balloon that is attached to a wheel and then is driven. It is hard for people to understand that when you inflate a tire, like a balloon, you can inflate it until it bursts - a bad thing! The reason that the balloon or tire would burst is that you have introduced too much volume into the balloon so that it cannot flex or expand further hence the pressure increases (psi) until the elasticity can no longer accommodate additional pressure and it bursts.
If you set the pressure of a tire when it is warm or hot, the pressure is already higher than recommended by the vehicle manufacturer (cold pressure same volume) as agreed with the tire manufacturer for a specific application.
Since air is a gas, it expands when heated and contracts when cooled. This gas is contained in a sealed container... the tire. As the gas gets warmer it expands causing the same volume of air to increase pressure.
In most parts or North America, this makes fall and early winter months the most critical times to check inflation pressures... days are getting shorter... ambient temperatures are getting colder... and your tire pressure is going down.
The rule of thumb is that for every 10° Fahrenheit change in air temperature, your tire's inflation pressure will change by about 1 psi; increase with higher temperatures and decrease with lower temperatures.
In most parts of North America, the difference between average summer and winter temperatures is about 50° Fahrenheit... which results in a potential loss of about 5 psi as winter's temperatures set in... and a 5 psi loss is enough to sacrifice handling, traction, and durability!
The difference between cold nighttime temperatures and hot daytime temperatures in most parts of the country is about 20° Fahrenheit. This means that after setting tire pressures first thing in the morning, the vehicle's tire pressures will be almost 2 psi higher when you measured in the afternoon (if the vehicle was parked in the shade). While that is expected, the problem is when you set your vehicle's tire pressure in the heat of the day when the tire is NOT COLD, the cold pressures will probably be 2 psi lower the following morning. If the vehicle is parked in the sun, the sun's radiant heat will artificially and temporarily increase tire pressures.
TireCheck is a differential indicator. It is set at 100% when installed on the tire at the proper pressure according to the placard on the door or owner's manual. Any pressure loss, leak induced, temperature loss induced, normal bleed through tire, will be indicated as a loss in pressure.
Increases in pressure are not indicated or needed as the maximum pressure of a given tire in a given application will almost never be exceeded and is of little consequence in tire durability or life expectancy provided that the tire was inflated at cold temperature. Imagine you inflate the tire at 35 psi cold. The maximum pressure indicated on the tire is 44 psi. The temperature would have to increase by 90 degrees to reach maximum pressure.
