I have used almost every tire changing device there is in karting over the past 15 years and it had always been the worst part of the sport. Until over a year ago when I first used the Kart-Lift Tire Changer. It made removing and installing kart tires so easy it was ridiculous. Even the ones with tough sidewalls on 4" wide wheels is a breeze. It is in my opinion on of the most innovative and useful tools in karting today. Wasted time, wasted energy, busted knuckles and new profanities are a thing of the past.
Best thing is only plastic comes in contact with the wheel so it will never damaged or scratch your rims.