I used them to change tires on my tractor. It took me a while to really understand their function, but after that it didn't take long for me to dismount. The hardest part was breaking the side, but after that it's all downhill. Just take your time and if you work too hard at it you're probably doing something wrong, like using the wrong camber on the main wheel mount to get the edge of the tire over the rim. A little lubricant goes far beyond the lip. I have other Motion Pro tools that have stood up to abuse, and I'm sure these mounts will do the same.
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