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      12-23-2015, 01:53 PM   #75
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Drives: 2007 e92 335i
Join Date: Jun 2011
Location: Greensboring

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Quote:
Originally Posted by BE X
Has anyone tried OEM 303m wheels on an F25?

Bit of research compared to the 310m wheels:
BMW 310m
Front alloy wheels: 20x8.5" ET38
Rear alloy wheels: 20x10" ET51

BMW 303m (from F07 - 5 GT series and others)
Front alloy wheels: 20x8.5" ET25
Rear alloy wheels: 20x10" ET41

Based on a wheel offset calculator on
Fronts would sit 13 mm wider (Is this too much? Cause issues long term?)
Rears would be 10 mm narrower - so would need spacers - thinking 15 mm but could it stand 20 mm? 20 mm would put the rears at +10 mm compared to the 310m.

I like this style wheel but could live with 19" if there are some OEM options that are similar...
The only thing I didn't confirm when I was looking at buying a set in Charlotte was the center bore could be larger than the X3's . If I recall correctly, the x5 wheels and 7 series may have the larger bore. I cannot confirm right now. As for offsets, I tried a 19" 9.5" et 33 and 10" et 38 up front . It stuck out slightly but not enough it would be a concern for me. So in comparison 8.5 vs 9.5 is a 10mm difference , so my 9.5 et 33 is like a 8.5 et 23. I also don't have the calculator but you could confirm the results.
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