I have a rusty's 3in lift with the stock 15x7 steel wheels with 31's. My tires are just too close for comfort in the rear, so i've decided to just order some cragar soft 8's. My only problem is i don't know what size backspacing i need can you help me???

 

call a tire shop but I think you need 4 1/2 to 5" BS

 

5" is stock BS 4.25-4" would be better 3.75 just check local laws regarding how much tire can stick out