I bought a set of Boyds Junk Yard Dogs and BFG KDW's for my 98 SS through Discount Tire Direct. They said 17x10 would fit with my 275/40 tires with a 38mm offset. Way off, they stick out too far and when I backed it out of the garage and turned the wheel it hit the bumper cover and shoved the liner about a 1/2" in. The factory ZR1 style rims are 17x9 with what appears to be a 50mm offset. Anyone here run the JYD's or Smoothies in 17x10, love the rims and want to get a fitment that works so I can rotate them.