j330xi I'm guessing your issue was not that it was too wide and rubbed the fender? Because if you haven't lowered your car, I don't see how that would be the case.
Using a Wheel Offset calculator, stock 9" ET29 wheels compared to 9.5" ET25 wheels would result in 2 mm LESS Inner Clearance (which shouldn't touch the suspension), and EXTEND the wheel out an extra 10mm, which many have done with spacers without issues.
OTOH, I bet it's your tire that is rubbing on the plastic in the fender well? I put 245/35/19 Michelin Pilot Alpin PA4’s on my car, but they rub a bit on the plastic fender wall on full lock. That's because despite being the exact same size as the OEM tires, they have a more square shoulder profile. If you compare the two tires' Tread Widths, you'll see that too: The PA4's is 9.5" whereas the PSS is 8.8". It goes away after a few thousand miles of driving, and has caused no damage on the plastic.
I wrote about my set up here:
https://f87.bimmerpost.com/forums/sh...1&postcount=18
Quote:
Originally Posted by 5.M0NSTER
OE front is 8.5 wide
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You're wrong. It's 9" wide.