On my 1991 f150 i currently have 31 70 r15s now i want 33s and for them to be just a size wider. And im stupid when it comes to tire sizes, so what size would that be? Also want to keep my 15s since there the original rims. Thanks

 

Oh and would 33s rub on stock height? And any recommendations on type of tire would be good, have wrangler authorities at the moment but want a lil more aggressive tread