When did TPMS become standard?
 

Anyone? TIA, Alan.

2007 or 08.....

Must be 07, then, as the 07 Boxster and Cayman both list it as standard. Thanks.

It was not available in 2005.

In 2006 it was an option.

All my questions answered then. From n/a to a $590 option to standard in 3 years.

As I have learned, there is more than 1 type of TPMS out there. Do some homework.

The two systems I am aware of are:

1) Actual sensors on the rim which can detect a change in pressure and alert you. This is the more expensive way to do it. Plus, if you mount aftermarket wheels that don't have sensors, you loose the functionality.

2) Using ABS as the sensor. They use ABS to tell if one wheel is locking up before others and use that info to denote that a tire must be going flat.

Of note, with a type 2 system, if all the tires loose equal amounts of pressure, no signal is given. This is especially annoying on a vehicle with super stiff runflat tires that never "look" low on air. On several occasions, while figuring out the problem, I would have 3 tires with 32psi and 1 tire at 20-25psi and no dash warning.

It became standard in 2007.
vincesf