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      01-14-2013, 01:21 PM   #8
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Drives: 2011 M3 sedan, jet black
Join Date: Oct 2006
Location: Bay Area

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Originally Posted by linuxd00d View Post
Thanks. Are you recommending 33 on all four corners?
If I were to replace my tires, I would run the rear 33 or 34 and run the front at 34 or so. Like I said before, the fronts are about 1 or 2 psi less than the pressure on the door jam.

I am not sure how this will affect handling and top speed capabilities. The tires require a certain amount of pressure to support the car as down force increases with speed. They also need to provide side support while turning and enough pressure not to damage the wheel with a pothole.

If you live in a warmer area or have a warm winter like I did last year, then the risk is the tires are soft and easy to over pressurize.

It would be nice to have a tire expert provide help on this to ensure we are inflating our tires to a dangerous level.

With that said, I have no recommendation to what you inflate tires to especially if it is different than what is written on the door jam. I am just sharing what I might do and have done.
2011 E90 M3 Jet Black/Black
ZPP, ZCP, ZTP, ZCW, 6FL, PDC, shades, 6MT