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Old 01-17-2007, 09:05 AM
denaliman denaliman is offline
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Location: Canada
Join Date: Jan 2007
Posts: 216
Mein Auto: 2013 X6M
The rims I am considering are BMW Factory 18" X 8.5" 48mm offset Style 74 with 255/55/18. This is the same size rim and tire size that is standard on the 2007 4.8i. The brake disc size is 345mm rear and 348mm front on the new E70. The older X5(e53) disc size is 324mm rear and 332mm front. This difference is big. However, they both have the same standard rim and tire size. (The sport package on the E70 adds 19" x 9"wheels with 255/50/19 tires). So if the standard wheel sizes are the same should they not be interchangable? The only difference I can see is the +2mm offset difference. I do not see any reference anywhere where if the truck is equipped with the 20" rim option or sport package they will have a different brake disc diameter than what is standard.
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