Quote:
Originally Posted by ///Mposter
I think the overall percentage difference is in tire size side to side and front to back. If all 4 were a side wall size 40 originally and you wanted a 45 or 50, it would be okay. Another guy put on 255/50/19 all around. Therefore 255 is wider and 50 is taller. Looks great and I would have done the same if I could have found the same hyper black wheels.
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That's my understanding as well. As long as all 4 tires/tyres are the same overall diameter there shouldn't be a problem with iDrive or the transfer case. I've been running slightly oversized tyres (~ 2% oversize) since new in 2011 without any issues.
I think the only problem with running a "square" setup with 275/40/19 up front as well is potentially tyre rub when turning because of the increased width of the front tyres.
Tony