Quote:
Originally posted by ODAMO:
couldn't the anti lock-or-stabilitrac sensors be utilized to sense continuous differentiation and therefore determine that one tire was lower than the others?
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Yes, but it cannot be used per the new Federal Regs for tire pressure monitoring systems. The original way the NHTSA proposal was written was to include either direct monitoring systems or the comparative system; however, this was taken to court, and the end result is direct tire pressure sensors to be installed in all four tires.
Older GM cars such as some Pontiacs had this system. Problem with this system is that all four tires can drop to (for example) 20 psi, severely underinflated, and the system can't recognize the lower pressures in all tires. It is great to notice one low pressure tire.