SET of 4 NEW 12X16.5 HD FORERUNNER SKS-8 Skid Steer Tires & Wheels - 14 PLY. These rims are 8 lug and have standard 8" on center bolt circle design with 6" center hole.
The rim offset is 4.125" on the valve stem side with 6.5" backspacing, plus the tire sidewall increases the width by about 1/2.