I bought the 1500 pound versions from Harbor Freight today. I tried moving the truck around in my driveway tonight. The butt of the truck moves just fine. The front end will not move at all. Not. At. All. I had the driveway replaced a week ago. The concrete man did a brushed finish on it. There are millions of little ridges. I cannot push the front end (with engine weight) over the little ridges. Hopefully the garage floor works better.