[Mike's Panzer]

Check around, the stems are less than $125 each, tire rack and even Wal- Mart has them. They are often for sale on this blog, I bought four for my winter tires for $150. It' a great system when working and can save a tire and lots of fuel.

 

[Mike's Panzer]

The valve stems are the sensors for the TPMS. They broacast a radio signal to an antenna located in the wheel well. Thats how the info gets to the dash and computor. The stem part should get replaced with each set of tires. The sensor should last 6 - 10 years. These Beru parts are now more available, check around for price.

 

[Mike's Panzer]

Good tire shops all over the country have been to training and have bought tools and supplies to work on these sensors. All cars and light trucks must have them. Customers are willing to spend money, this drives the market. Grap the phone book and start calling, if you don't get good answers, move on. Call the local parts store for recomendations.

 

[Mike's Panzer]

The battery has to able to start and stop, spin over 100 MPH, and go over bumps, all in temps of -40 to 150. it has to be sealed up to surrive. The goal is 10 years. They will start to fail after six depending on miles and how there driven. No roadside flat tires and proper pressure at all times is worth it to me.