I just bought 2006 300C and replaced my stock wheels with 22 inch wheels. I see the tire sensor warning sign on every fifteen minutes. Did the dealer forgot to place the sensor on my 22 inch? Anyone experienced this? If so, please advise.

 

I heard that there is some sort of L connector that is needed for aftermarket rims to keep the sensor firmly in place to avoid the problems you've mentioned. Do a search on www.300cforums.com to get the exact answer. That forum is much bigger and is full of useful info for almost anything that will come up with your 300C.