Biggest tire on 1969 dart

My 68 Dart:
- stock 8 3/4" rear with large bolt pattern axles
- stock spring location (SS springs)
- 255/60R15 on 7" steel wheels with 4 1/2" backspacing
- on drivers side: less than 1/2" clearance to fender lip and about 1" clearance to springs
- on passengers side: had to trim about 1/8" off of fender lip for clearance and about 1" clearance to springs