GT Tire Pressures [Archive] - Bimmerfest - BMW Forums

: GT Tire Pressures

12-15-2011, 02:16 PM
Hello All,

I'm running high 32 front, 39 back. What's everyone else having their tires set at?


12-15-2011, 02:50 PM
+2 above whatever the door sticker says, and I think it was 35/38 (so 37/40 for me). something I had learned during track days about improving grip by setting at +2 (actually it was +5, but that assumed you were racing on a dry track).

12-15-2011, 04:56 PM
The book's tire pressure listing is huge, depending on which wheel size, the load you normally carry, and the speed you wish to travel, so, without at least defining the wheel size, it's kind of arbitrary as to what tire pressure should be in the vehicle.

This time of year, remember to account for the fact that tire pressure (cold) drops about 1# per 10-degrees F drop. So, set it warm after sitting in the garage means it may be 4-5 pounds low once you get out in the middle winter cold spell. Altitude affects the ultimate tire pressure some, too. Ideally, you'd set the pressure after cold soaking outside for awhile.