There were a LOT of guys out here in the last 2 years that had 38" tires that had the base beams dragging. To basically eliminate tracks, these work, Pivot walker wheels, but man, they sure find weak gear boxes. Plus, if one goes, and the u-joints on the other driveshaft don't give, the other wheel will dig an impressive hole, right before it literally and completely shatters the case on the other gearbox.