Tire pressure monitoring question

[356driver]

Hi Everyone,

I just bought a 2004 Cayenne Turbo with 18" wheels and an extra set of 20" wheels. I am now running the 20's on a day-to-day basis and plan to use the 18's for mountain/snow. The 18's came with tire pressure monitoring sensors but the 20's do not have them. Is it possible to move the TPMS sensors from the 18's to the 20's, or at least add TPMS sensors to the 20's? If so, are these trivial or non-trivial (meaning expensive) modifications? Thanks in advance.

[wingless]

It is likely that the most cost effective approach would be to purschase wheels with the sensors already present.

Remember to select the correct of two frequencies for the sensor.

[bancu]

Is it possible to move the TPMS sensors from the 18's to the 20's, or at least add TPMS sensors to the 20's?

Since you already have the wheels you could move or add TPMS sensors. Since you want to use both sets, I'd add them. I sure wouldn't want to get in the middle of moving them between two sets of wheels every season.

My dealer moved TPMS sensors from a set of 19s to 18s when I got my Cayenne. Other folks have had them added: http://www.leonoff.net/pages/cayenne/tpms/tpms.html to even third party wheels.

Your dealer should be able to do this without too much trouble and take care of any issues. Realize that it is going to take breaking down the wheels to add the sensor, rebalance and time to get the system to recognize the sensors.

[356driver]

Thanks for the responses. I had my tire shop switch the sensors from the 18 inch wheels to the 20's because I drive on the 20's most of the time. It was a trivial task. The sensors are attached to the tire valves and are easy to change.

[bancu]

Any time. Glad the move worked out. Now if I can only get mine back to a functioning state.

Thanks for the constructive "As a matter of fact, yes..." comments over on Roadfly.

[rockitman]

Anyone know how much to buy another set of sensors???

[Astolfo]

About $800. i did it to my new sets of 18"

[rockitman]

$800 for tpms valve stems/sensor. What a rip!!! If you use wheels w/o tpms, is there an annoying warning light ect??? I realize it will show an error on the tpms screen, but I could live with that for the winter...

[bancu]

If you use wheels w/o tpms, is there an annoying warning light ect??? I realize it will show an error on the tpms screen, but I could live with that for the winter...

<{POST_SNAPBACK}>

Thankfully, you only get a warning when you start the vehicle. I've been running mine disabled since the system got messed up during a tire swap.

The TPMS screen just shows no values for the tires.

I read somewhere that you can also get these from Tire Rack for $80ish dollars a piece. Still kind of a rip give that you can get the whole SmarTire system from them for under $300.