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Am I okay running 245/40/20 and 275/35/20
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03-08-2019, 12:15 PM
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ozwol
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Drives: f31 335d g31 540i
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Discussed this (as id prefer the look of a taller tyre on the 20's) with a former bmw master tech who advised against it ...he said the cars are mapped to a certain circumference tyre and this could cause overgearing and drivetrain wear.
Appreciate
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