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      12-19-2012, 09:37 PM   #7
slicer
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Drives: 'E46 M3 Race Car, '23 X7
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Location: Wisconsin - Instagram - @slicer_m

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Quote:
Originally Posted by STi_traitor View Post
This is just from what I have heard and what I am running now. 235/40, I don't have the ZCP package but I don't think that makes a difference. The reason behind the 235 is that it helps to cut through the snow with the thinner tire. Looks stretched like crazy in the rears but I figure it is recommended and the safer bet to keep my car in one piece for next summer. I have heavy snow days, not sure how your weather gets.

Check your driver side door, I believe it has the recommended sizes with PSI.
BMW actually recommends 235/40/18 in the front and 255/40/18 in the rear (on their winter 18x8, 18x9 wheels). They don't recommend 235/40/18 on the 9.5" rear wheel. That tire is too narrow for a 9.5" wheel.
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'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
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