Tire Size?

[gslracing]

What is the largest tires I can put on my 2005 330ci & not rub or stick out of the fender wells?
Front wheel is 7.5" x 17"
Rear wheel is 8.5" x 17"

[Gary@Tirerack]

On the rear you can move up to 255/40R17 with no problem unless the offset is incorrect.

Tires http://www.tirerack.com/a.jsp?a=AB2&url=/tires/index.jsp