[neelkc12]

Originally Posted by brissim

To answer your specfic question - there should be no problems in using 235/55/17s in place of 245/55/17s. There is only a 1.6% difference in tire overall diameter (27.6" for the OEM tire vs 27.2" for the replacement). Only issue will be your speedo will read 1.6% high - ie when speedo shows 60 mph, you actually will only be going approx 59 mph.

The alternative suggested by DC will also work. I know because thats the tire size I replaced my original OEM 245/55/17s with when I took delivery of our X3 over 12 months ago. For the 235/60/17s, tire diameter is 28.1" or 1.8% larger than the OEM size (in this case the speedo reads 1.8% low).

One other alternative which will let you keep the BMW OEM tire diameter is 225/60/17 (tire OD = 27.6").

Tony

Thanks Tony