Be aware that on my 2012 if I run the belt in the middle of the rear pulley the belt eats the tire sidewall. When I got the car belt was running 1/8 inch of the pulley on the near side. When I adjusted the belt to the middle it rubs the tire and the belt is the winner. I have checked everything and the alignment seems spot on. It looks like the rear pulley once had an outside flange that was removed. Even being built on a frame jig this car is after all hand assembled. I had a multitude of similar problems when I restored (frame off) my TR3B
Wow that's seriously off!
Either your chassis was built crooked or possibly cracked, the rear swing arm was built crooked or the tire isn't aligned properly in the swing arm left to right on the axle.
Perhaps check the spacers on both sides of the wheel. If on is wider than the other maybe it was assembled incorrectly aligning the wheel too far to the left.
Another option would be to machine two new spacer with the correct width to move the wheel to the right enough to clear the belt when the belt is running on the center of the pully
