20mm rear and 15mm front - is slightly aggressive!

I had rear fenders rolled. I am thinking of going down to 18 or 15mm in back. Every so often there is a grazing at the inner plastic bumper part of the wheel arch which cannot be rolled and I won’t cut. The graze is so slight and rare that it is not even wearing paint on the inside edge.

Btw, is it me or does it seem like the tires look higher profile now that the stance is more aggressive.

Looks good. Tire size? Wheel offset?