The tires on my F350 weight a lot more than what I can comfortably handle. Instead of taking the truck to a tire shop to dismount winter tires and mount them again on the same rims, I got myself a second set of rims with my summer tires, but the challenge is to replace them myself. It is very heavy work. With the help of this dolly it is child play. Really easy and effortless. I learned how hard it is with the two front tires and was about to take the F350 to a shop to do the other two when I found this device in Amazon, and replaced the two back tires with it. It is great, saves your back, probably your marriage and maybe even your life, as I hear from my doctor that many heart attacks occur when people are doing just that, replacing a tire (mostly on the road, a flat, but is the same effort).