I didnt receive much response from a thread in another forum area so I thought I would try here. I have a friend with a 95 Chevy 1500 with 33X12.50X15 M/T tires on 15x10 rims. His truck is not lifted and is at stock height. He bought the truck this way and does not know the backspacing on the rims. What I am wondering is if I were to purchase 33X12.5X15 tires on 15X10 rims what backspacing would I need to get them to fit? Or should I just ask if they will fit the Suburban? They would be going on my 95 Suburban 1500 4X4 that is at stock height, ie not lifted. Please advise. Thanks for all the help. John