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      01-23-2013, 05:46 PM   #5
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Drives: BMW F11 535i Touring
Join Date: Mar 2007
Location: Scotland, Highland Region

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If the F25 is as tire sensitive as the E83, I'd certainly be careful of changing tire profiles, particularly if you run a staggered setup.

There have been a lot of transfer box issues and drivetrain 'bunching' problems here in the UK in the E83, even changing from OEM 'star' approved tires. Usually gets back to wrong tire matching, even if using generic sizes.