My Craftsman rider was really needing some tires and I've been getting really tired of spinning my wheels on some of the steeper sections of my back yard (more like pasture) so I slapped a set of knobby ATV tires on the back. Boy-howdy does she hook up now. I haven't had to fire up my Bobcat walk behind to get the hard parts since. I could totally see this wearing out the Tuff Torq transaxle fairly quickly, though. (It's filled with fresh M115w50). Right now, I'm going with the convenience being worth the extra wear and tear. I guess I'll find out.