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It makes no sense to have a TPMS but it does not tell you what tire is low. Even my 2000 Corvette let's me know this. It is really dumb to have a so called Lux. Car and you have to get out a put air in all the tires and hope you "get it right". This is also added fun when it may be the spare and you have to unload all the "junk in the trunk". Nice move Lexus!
The Corvette apparently has one of those TPMSs that does not autonomously register the tire positions and that comes with some risk if you are going to use the display information for safety related decisions without verifying the accuracy of the displayed positions. Another disadvantage with the Corvette is the inertial activated sensors - they do that for battery conservation - and that may allow you do drive away from a safe location before you find out you have a problem. And it looks like the spare is not equipped with a sensor. There seems to be different disadvantages with the different implementations that manufacturers have chosen. Maybe it would have been better if NHTSA had issued a standard with the TPMS mandate, or maybe not.
11-08-10, 10:10 AM
