The only problem I've had with mine was the water pump, and it was kinda my fault. After reading alot about the weep hose mod on here, I thought "I'll worry about that later." The bad part is I waited until I saw it leaking coolant out on the trailer, looked and the weep hose was gone. I used to suggest tires as the first mod to someone, but now it will be the water pump weep hose especially if you do any mud/water riding.