I have 5 37x1350x17 Pitbull Rocker Biasply tires at 70% and spare has never been on the ground,these tires have 10ply sidewalls and are the toughest off road tires I have ever owned.Some minor cuts and rash but all hold air and has lots of wheelin life left,asking $1075 for all 5,please call 602-999-9255....T.C. OR Donna