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      06-22-2012, 10:58 AM   #2
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Drives: 2008 335xi 6spd Coupe
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There has been some speculation that tire sizing could impact the transfer case.

Typically, people try and have a rolling diameter variance from front to rear of less than 1%, and you're somewhere near 1/4 of 1%. Most people with 19s seem to be running 265 35/235 40 (closer to 1/3 of 1%).

I had mine replaced, and while it could have been a wheel diameter issue, I tend to doubt it.