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Any experience with wireless tire pressure & temperature setups? I have an sc430, but the stock system has minimal functionality (low pressure warning only, does not display individual tire pressure and temperature) - and looks way over-priced. Looking for tires led to wheels led to asking about the Lexus sensors, quoted >$200 each!?! Hmmm, gotta be a better choice (thus "encouraging" Lexus to make this a better option, preferably integrated into the trip info display sometime soon).

No advertising intended, but references include www.smartire.com, www.pacific-ind.com, siemens has something in the works, http://www.garage-toys.com/wirtirmonsys.html, ...

Would appreciate hearing both good and bad experiences.

thanks!