I have learned with old truck and tractor tires to set the tool and get it to move some then move it along the bead your attempting to take off and slowly move around the rim. The key is to not be in a hurry and take a little and move so you don't put undue pressure on one spot of the tire and rim. I have not had any of the issues that others have stated with this tool. It is a great valuable in allowing me to work on my tire needs on my property as we are 100 miles round trip to the nearest tire store.