tracdoc good to hear from you again. Did you sell your pt 425? If so have you bought a different tractor? I put solid tires on the finish mower and they work well. I haven't used it all that much as we have another mower but it works well for mowing under my walnut trees. If I ever have trouble out of our other mower then I have this one to keep things going until I get the other mower fixed or get a new one. My wife likes to do the lawn mowing and she prefers using her craftsman lgt mower even though it is slower.