I have summit a muddawg 35 x12.5 x15 and 4 toyo 35x12.5 x15 a/t muddawg would make good spare about 3rd tread left toyo 2 are about 7/8 and 2 are about 5/8 good tires ride good took off 94 bronco with 9" rear end with full spool that's why difference in tread wear rob outlaw offroad 770 367 3091