I think the OEM on my 93 was a 265---will have to look at the spare, it is a goodyear RTS. I have run 31's and now have 32X1150X15's on stock rims. If they do rub, it isnt much. Guess I need to looksee if I have polished radius arms. Very satisfied with the 32's (was also with the 31's).

I did a post (somewhere!) where I measured "rollout" of the 32's with PSI'S from 50 to 10 PSI and can say that my figures show very little difference in rollout (= circumference), maybe ~2-3 %. Also been my experience that a 31 and 32 may be a full inch short on actual height as computed by circumference. To be clear, thats MY tires (bridgestone APT) on stock rims on my bronco. I am not saying all tires do the same