I just plugged the 17x9 ET46 into an offset calculator against the 17x8.5 ET40 wheels that I run and it moves inboard 12mm but leaves the same clearance on the outboard side. That gives me a lot more confidence that this is an E36 wheel based on your picture of the clearance. It's tight but it fits in the wheel well nicely.
I run 245/40 in the rear and have no issues on the outboard side, didn't have to do anything to the fender to fit that.
On the inboard side, I think you could definitely file down the edge of that perch. Just hit it with some undercoating or something to seal it up. If you just take a mm or two off where it is closest it won't hurt anything. __________________ ~Dave~
98 328ti Morea Grun slicktop
11 128i space gray slicktop
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