i need new tires for my truck and a friend has a set of 31x10.5R15 tires in new condition he'll give me a great deal on. i wasnt looking for big tires (not that 31" is that big) but these are a great deal. my truck is not lifted, and i have NO intention of doing so (its 2wd). Basically if these tires will work i'll run them, if not ill break down and buy 4 new one's. thanks for the info!