Quote:
Originally Posted by arhoads335i
Can anyone comment on if these are lighter than OEM rims. I’d like to justify buying a set if it helps performance in some way.
If they are truly forged they should be like 4lb lighter each
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M40i has 3 different OEM radial sizes (19", 20", 21") and at least several OEM designs available for each size.
The forged versions also could be of a different size and design. All these factors will impact the difference in weight. However, the difference will be there.
Example: BMW 21" 716m rim is about 36.4 pounds, while 20" forged BBS FI-R design would be close to 11-12 kg. Along with a 275/45 tire, the entire wheel weight difference will be in the range of 16-18 pounds per conner.