We started using an Exmark Advantage 52 with a 20hp Kawasaki this season. It has been a nice machine with a good cut, but it tends to leave ruts when we turn and the tires slip on small hills and scalp the grass. I try to make turns on the drives and walks to prevent marks from turning. Does anyone have a suggestion for an aftermarket tire that may help solve the problem or would extra weight help. I weigh about 190 pounds and my other operator is little weighing about 115 pounds. I try to make sure I am reversing one tire when turing and pivoting. Even at slow speeds I sometimes have problems. Any other suggestions would be appreciated and let me know if this could be operator inexperience. All in all a very nice machine. At first I thought it would be too big for the yards we do but it isn't. Cuts fast and is highly maneuverable. The ability to get off and go around trees slowly is also a benefit. Thanks!