Air pressure

[Dlirium]

Originally Posted by KRAM36

Did your car come with those wheels or did you buy them and install them? For the Boxster the Carerra Light wheels are Fronts 18 x 7.5 Rears are 18 x 9. The size you posted are from the wheels used on the Carerra.

ah - that is what I was looking for. So 18" wheels on a Boxster as a factory option was 7.5" wide in front and 9" wide in back...great!

I'm trying to figure out if my wheels on my 2000 S are stock or not!!

[thstone]

The stock tire pressures were defined to ensure that the car has understeer and not oversteer. This is also the reason for the staggered tire widths (narrow in front, wider in rear).

Thus, generally the goal of tire pressure changes to a stock Boxster is to decrease the amount of understeer inherent in the design. To achieve this, slightly increase the front pressure and decrease the rear pressure. 31 front and 33 rear is a good starting point.