i have a 92 4 door xlt with a three inch body lift. i am planning on getting 32 x 11.50 BFG mud terrains within the next few weks. my question is will tire dealers mount these on 15X7 ims even if BFG doesn't reccommend it?? also since i have the original firestone atx spare is there any way that i can trade that in at the dealer for a 32 inch tire(and pay more). i haven't called arond yet but it seems like they might do it. i have an extra set of 235-75R15 allterrains in muy shed so i would just be mounting one of those on the spare rim and getting 4 32X1150 mud terrains on the other stock 15x7 rims. any suggestions wouild be appreciated.