I've got a 2wd 03 supercab w/ spindle lift (about 3 in.) w/ 16" wheels. can I go with bfg at ko 305/70/16 with no rub? Also, how much worse is my ride going to get? I have 265/75/16 now which are way too small but ride nice.

 

Those would fit just fine with your lift. Ride? That's more of a factor of the load rating of the tire. A Load D or E range will be stiffer than P-rated tires.

 

do all tires (specifically the ones I'm looking to buy) come in different load ratings, or do they just come in one rating?