Tallest tire fitment on rear of Scamp

you might be able to find some junk tire at a tire shop, just for fitment purposes. Im sure they would just give you a tire that has little to no tread on it. Another place would be at the drag strip, ask some racers if they have any old tires that they might give away cause theyre worn out. Too bad you don't have a duster, lotso room under them quarter panels.