Anyone running Turf Savers on their ZTR? I found a Z that I like. But, for some reason it was crated with Turf Savers, which isn't a "stock" tire for it. I could be wrong, but I don't expect much traction from them. But I don't want to rule the machine out over a set of rear tires. I know this is a double standard, but what tire provides the most traction with minimal turf damage? Also, the front tires are ribbed rather than smooth. Is anyone having trouble with turf damage from the ribs?