No one has mentioned the following, so I will: If you go to the SC430 form at the Club Lexus web site and open the sticky entitled "How to disable tire-pressure monitoring (TPM) system?" you will find instructions on how to do so, as well as a discussion of pros and cons. It took me 20 minutes. If you go this old-school route, just be sure to buy a mechanical (pencil-type) tire pressure guage and take a couple of miunutes to use it every week or so.