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      05-29-2012, 03:58 PM   #25
Alan l.
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Drives: LCI M-Sport 550i
Join Date: Jun 2009
Location: East Coast

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^^ its because of the Xdrive system. 245/285 has a identical rolling diameter for the front and rear tires which is important for the AWD system.

If i had a RWD 535 i would have gotten 255 up front for sure.

Alan
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2014 LCI 550i M Sport | 3D Design Front Spoiler | BMW Performance Black Grills | BMW Performance Trunk Lip | BMW Performance Diffuser | Painted Reflectors | Wincos 30% Tint | Supersprint Exhaust | ACSSprings | MORR VS8.2 Rims 20x10R and 20x9F | Michelin PSS Tires |||More Photos of my car here|||