I noticed that after I put on 3 sets of winter tires last fall. Changing tires is not technically difficult at all, but I find it increasingly overwhelming. I was looking for a device that would make removing and installing tires on my three mid-size SUV cars a little easier. It does exactly what it's supposed to do. When removing, I sometimes noticed that the wheels were stuck on the hub. You can use this to rock the wheel, making it much easier to take it off. Installing the wheels is a breeze - just more or less line up the hole pattern and press them in. This will raise the wheels an inch or two off the ground to help straighten them. I highly recommend it.