Ditto above...without knowing what size tires are mounted on the rear...we can't really give you a good answer as to the affect the 275/
45/20 tires on the front will have. We need complete information for both front & rear since both axles have an affect on the various technologies (ABS/DSC/xDrive) that need them to be within the same general tolerence of 3% (+/-) ...and any tire size calculator will indicate that a 275/
45/20 tire and 315/
35/20 tire has a diameter variance that is
GREATER than 3%.
And ditto about the markings on the wheels. The BMW initials as well as the BMW part nbr (last 7 digits) and other wheel specs are cast into the wheel (around the hub's front side surface) on the style 87 wheel. It would take a really thick coat of paint to cover that data to the point that it was totally smooth. If you don't see any BMW specific info around the hub...rest assured that they aren't orig BMW wheels.
