Good for large tractor tires. Also works well enough for the front tires. Haven't tried it on subcompact or ATV tires but not sure if it will work. I wish it was designed to be used with a percussion pistol, that would be a lot faster. Pretty heavy, aluminum would be better. A deathblow or magazine sledgehammer is required. This wasn't mentioned in the instructions, but coating the wedge with tire paste will make it easier to get started.