New shoes on my wagon

Finally got a matching set of wheels and tires on my wagon. 255/60/15 Mastercraft on some 15x8 rallies I had. The left rear clears , but the right rear has slight rubbing???  Should I trim the fender well , which also is the mount surface for the trim?

You can trim, or, you can center the body.

Love that look

for some reason all wagons bodies are slightly shifted to the left maike clearance on the pass side rear tighter that the driver's side. I had a set of 15x8 with 4 in back space and 255s and ran them on 4 different wagons. Every one would rub on a right hand turn anywhere over about 3mph.

I went down to 235 tire and under spirited driving (ahem) it would rub on right turns. Swapped to a stock SS rims which had more backspace and the problem went away.

You can roll the lip on the pass side for clearance (easy way) or as mentioned, re-center the body for that 1/2 inch difference (big PITA).

Nice choice. How's the grip and noise of the Mastercraft?