Here are some pictures of the trial tire fitment. The first two are of 28x12.5 ET Streets; these are actually smaller than the 29.5x10.5Ws in the last 3. That's the absolute maximum width tire you can fit on one of these cars and still leave the back wall of the frame intact!

Oh..all of the classy props in the photos like the broom, welding jacket, et cetera are just to give the pics that "professional shop feel"...