well as you can see, i clearly have no idea what i am doing buuuuut...im looking at 4wheelparts.com to get some new tires. there are having a deal, buy 3 ,get 1 free tire from bfg. they have two 31" tires, and they are 31/10.50R15 (Ply Rating=8 Tread Width=8.1 O.D.=30.2)
PCT15031, and 31/12.50R15 A/T
PCT15231. what do the numbers after the "31/" mean, and which one should i get? thanks.