20's TPMS
 

I am about to put some 20's on my 08 gt. The guy from the local speed shop said if i install them the TPMS will go off, therefore in the future i will not be able to pass inspection. is this true? if so what do i need to fix this problem. I already tried the search function on here but im still a little confused. thanks.......

A tuner. it will re-program your computer and make the adjustments needed for your car, and give you a few more horses ;)

Are you going to keep your stockers in the garage? I left mine mounted up and stored in garage, and as crazy as this sounds, as long as I did not travel over 45 miles from home the sensors never went off. My buddy has done the same with the same outcome.

However, if you are going to sell your wheels, now is the time to transfer the sensors over to the new wheels. I bought the bands from the tire dealer for alot less than the Ford dealer. If you don't do it now, it will be more expensive later on having to pay for labor/remounts and balances again.

Yeah get the bands, move the TPMS from the old rims to the new, disconnect the battery for 20 minutes, reconnect battery drive car for 20 miles and sensors should be recognized and problem sold.....

If your garage can't supply the bands there are a few online stores that stock them that are still cheaper than Ford!

just press the reset button. thats the easiest and cheapest solution. do they really check for the TPMS on inspections?

reuse the sensors from the existing stock rims, and get the straps from american muscle about $15 a strap.
I didnt know about this when i changed my rims, so now everytime the car starts i get a TPS beep!

there is no way that sensor signal travels 45 miles. you would get crossing signals from every mustang or ford in the area. And i highly doubt every new ford has unique RFID TPS tags. Its more likely the car only checks the TPS sensor on startup or at certain mileage points.

yea i think it runs a loop check, where it has to fail so many times in row, then the light starts coming on. so if you got the old set in the garage, every time you start it in there and it checks out ok and breaks the loop check failure.

Not sure what this has to do with TPMS??

http://iihs.net/fsm/?dir=68&viewfile...g%20System.pdf

No need to disconnect the battery if the original sensors are reused.
They are already trained to the SJB and dont need to be recognized.
New sensors other than the ones sold with the original rims need to be
trained.
http://iihs.net/fsm/?dir=71&viewfile...20Training.pdf

+1
its all personal preference

I said it sounded crazy, but since you think you have the knowledge of how it works, if they didn't have different ID's then every Ford with the system that had a low tire close to you, would set off your system. So, I thought I'd research it before I made an inaccurate statement. Here's what I found.

In a typical TPMS, each wheel of the vehicle contains a device (TPMS sensor) - usually attached to the inflation valve - that measures air pressure and, optionally, temperature, vehicle state (moving or not), and the health of the sensor's battery. Each sensor transmits this information (either periodically or upon request) to the on-board computer in the vehicle. To differentiate between its own wheels and wheels of the vehicle in the next lane, each TPMS sensor contains a unique id. The receiver is "paired" to the sensors very much as a Bluetooth device. The vast majority of TPMS sensors transmit information in clear text using one of the assigned radio frequencies (typically, 315MHz or 433MHz).

TPMS transmits data that uniquely identifies your car! Each wheel of the vehicle transmits a unique ID, easily readable using off-the-shelf receiver. Although the transmitter’s power is very low, the signal is still readable from a fair distance using a good directional antenna.

And...Guess what? Big brother is watching us...

TPMS can be used for the very purpose of tracking your vehicle in real time with no substantial investments! TPMS can also be used to measure the speed of your vehicle. Similarly to highway/freeway speed sensors that measure traffic speed, TPMS readers can be installed in pairs to measure how quick your vehicle goes over a predefined distance. Technically, it is even plausible to use existing speed sensors to read TPMS data!

Note that unlike traffic sensors that measure speed anonymously, TPMS can be used to measure speed of each individual vehicle because car manufacturers know serial numbers of every part in your vehicle, including unique IDs of TPMS sensors.

http://www.hexview.com/sdp/node/44