I just bought a 93 1500 4x4 suburban that has a gm performance crate 350 that has 70000 miles on the motor and a 4l60e and rear that came from Jasper that have 10000 on them. paid 2000 for the truck which I thought was a good deal. The truck came from the factory with 3.73 gears and a rear locker, the tire size was 245/75/16. The truck now has 265/75/16 tires on it. My question is, are the tires on the truck now too big for the stock gearing? Or, should I plan on stepping back down to the stock tire size? My plans for the truck is using it to tow my jeep. I will flat ow it for now until I can find a good single car trailer down the road.