I'm getting winter tires that I am planning to mount on the sport EOM wheels that came stock with the car, that is 225/45R17 (diameter is 29.97") for the tires and 17"x8" for the wheels.
I am thinking of getting
17" x 7.5" with 225/45R17 (diameter is 24.97") for front
17" x 8.5" with 245/40R17 (diameter is 24.72") for rear
to use during non-winter seasons (will probably get a Z rated Michelin Pilot Sport - good reviews!)
Those are the same exact dimensions that are used on a 330i equipped with the sport package.
Two things that doesn't seem right:
1. the diameter difference seems rather large (I read on tirerack that it should be within 0.04" for plus sizing, which I am not, but I assume the same principle should apply here). But since BMW ships with that configuration, I guess that would make it OK??
2. the odometer reading, would that change significantly because now the rear wheels/tires
are different from the stock dimensions? Because of the smaller size, can I expect the odometer
to run up much faster? Any idea on that?
Any suggestions perhaps for a different size combinations welcome. Thanks!