2wd 1994 f150. i want to put two bfg all terrains on the back but dont know what size to get. the rim size is 15x7.5 and want to know what the smallest size bfg i could get is that would fit with no mods. all the numbers i have found are really confusing me. please help!!

 

In the back you can easily fit 33x10.5s.

 

31x10.50x15 sounds like a good fit. You could also get 30x9.50x15s too

Or do what the other Sean said. All depends how much you care if your front tires are the same size as the rear

 

With 15x7.5 rim, my front tires rub, cant turn the wheel all the way
33x10.5