We have not experienced any issue with the wheel getting out of balance after the installation of the Tire Pressure LED.  However, we do recommend you have them on when getting your wheels balanced to get the best results.

You need to make sure that the valve stem is not so long that the Tire Pressure LED sticks further out than the edge of the rim of the tire.  This is to prevent damage while parking close to a curb or in some type of car-wash machines.  When getting new tires and valve stems we always recommend you choose short valve stems.  If you are planning on driving speeds exceeding 150 km/h (93 mph) for extended periods of time, we highly recommend the use of metal stems.  During internal testing in the lab, we were able to detect valve stem fatigue after 30 minutes of 300 km/h using an excessively long rubber valve stem (cap sticking out beyond the tire).  With short proper rubber stems, however, we did not see any fatigue, but we still would recommend metal stems if driving above 150 km/h (93 mph).

The Tire Pressure LED has its own circuitry totally enclosed and is battery powered. Therefore, there are no radiations, radio signals, or electrical fields which could interfere with ABS, engine mapping, or other electronic components in your vehicle.

The caps are totally water proof and can be submerged in water when they are attached to the valve stem  The material for the threads will not react (freeze) with the valve stems even if exposed to salt water.

The caps can handle any type of weather.  The only issue could be that in extreme cold the batteries will not perform to their full capacity. However, when the temperature returns to the recommended operating temperature, the batteries will recover to their normal capacity. The recommended operating temperature for the batteries is -4°F to 130°F (-20°C to 54°C).

The caps are totally water-proof and can be totally submerged in water when they are attached to the valve stem

The Tire Pressure LED is manufactured in mass production, so there is sufficient stock.  We typically ship within 3-5 business days.

The life span of the valve cap is entirely dependent of the battery shelf life, which is 3-4 years of standby time. The cap can flash continuously for approximately 3 weeks. Like with all warning devices, it is strongly recommended that the valve cap is checked periodically to ensure that it is working properly. It is also recommended that it is replaced, along with the valve stem, when replacing your tires, or at least every 3-4 years.

Installation of the valve cap onto the valve stem is very straightforward. No special tools, knowledge, or skills are required to install or monitor the device. However, you MUST THOROUGHLY READ AND FOLLOW THE INSTRUCTIONS. Following the step by step procedures included in the package is absolutely necessary for proper installation (97% of customer complaints are due to improper installation caused by not reading and/or following the installation instructions). Since it is self-calibrating, a professional installer is not required for proper calibration. Tire Pressure LED can be installed in just a few seconds! It should not substantially affect the wheel balance once installed, but we recommend that you get your tires balanced with the cap on, especially on motorcycles.

At this moment there are two versions of the Tire Pressure LED.
One we recommend for use for tires with 10-70 psi (0.7-5.0 bar), which is for passenger vehicles and SUVs, and will start flashing for a 4 psi (0.3 bar) pressure drop. The other version is designed especially with the heavier vehicles in mind and is recommended for tire pressures ranging from 60-170 psi (4.0-11.0 bar).

This version will require an 8 psi (0.6 bar) drop before it starts flashing

It is impossible to tell exactly how much you save, due to varying fuel prices, cost of tires, and how much you drive annually; however the installation of Tire Pressure LED will reduce both fuel and tire costs. Having under-inflated tires or even only one under-inflated tire will mean increased fuel consumption. Additionally, the thread of the tire is worn down faster, reducing the life span of your tires. Under-inflated tires are also dangerous for the fact that they can trigger blow outs, making Tire Pressure LED essential for safety and saving lives. Research shows that 80% of all vehicles have one or more tire with an average of 25% under-inflation. Using these figures given, the average vehicle is using an average of $300 more per year of fuel than it would with the correct tire pressure on all tires. Additionally, even slight under-inflation can reduce tire life by up to 50%. Only you know the exact value of your tires and can figure out what your savings will be.

The valve caps are under constant pressure since they monitor the pressure inside your tires. A valve extension can be used but MUST be airtight when fitted to the valve.

The only tire pressure monitoring systems which could be considered to be in direct competition with the Tire Pressure LED are the Accu-pressure safety caps and the digital dashboard mounted devices. However, testing shows that the Accu-pressure safety caps and other similar mechanical valve caps are surprisingly inaccurate and unreliable compared to the Tire Pressure LED. Additionally, they are not universally compatible; therefore, retailers need to stock a large quantity of different types of caps for different psi settings.

 

The digital dashboard mounted variants, on the other hand, are significantly more expensive in comparison, priced in the several hundred dollar price bracket, and after-market installation requires professional, skilled mechanics, therefore easily costing an additional several hundred dollars.

Alkaline manganese, which is a non-hazardous substance. However, they are not recommended for inclusion in regular household waste and should be recycled by proper means.

The valve cap does not fall under any of the EU directives and as such it doesn’t require a CE mark.

Tire Pressure LED comes with a two year manufacturer's warranty. All valve caps are individually quality checked before dispatch and, therefore, the percentage of defective goods is extremely low. All details for returning any faulty goods are provided on the back of the packaging and on our Warranty and Returns Policy Page.

We recognize that this product may be susceptible to theft due to its flashing feature. However, this risk is minimal and can be associated with any non-standard flashing or glowing valve cap. An anti-theft version of Tire Pressure LED is available, preventing theft with a rotating stainless steel sleeve, which requires a key* for removal.
*key included with purchase

The valve caps are made of stainless steel with a polycarbonate lens. The passenger versions have a reinforced nylon thread and the commercial versions have a brass thread.

The revolutionary Tire Pressure LED was in development and testing for over two years before it was launched into the market in 2004. The second generation made of stainless steel was launched in 2008. However, the product is constantly updated and refined to make sure we take advantage of the latest technology and materials on the market. Since 2010, the caps have been produced in our own factory.

The manufacturer is Automotive Upgrade Technologies, Inc, a US-based company that has devoted itself to improving the performance and safety of vehicles everywhere. Components for the cap are made in several countries, and the final assembly is done in China by our wholly-owned subsidiary, Tire Pressure Systems Ltd.