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      12-13-2011, 08:11 PM   #47
jra85
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Drives: 2011 E92 M3 ZCP
Join Date: May 2010
Location: Long Island, NY

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255/35 and 275/35 is a common, tried and true upgrade.

If you want to go to 295s, and if you want to keep the original stagger of a 20mm width difference, you would have to do 275/30 and 295/30. Your stated 255/295 combo may yield increased understeer, though I don't know if anybody has actually tried that combination to verify!