8. Loosen the Ram Bolt and Clamp Bolt. If you cannot break the remainder of the tire bead loose by hand, move the BeadBuster XB-455 to another location on the rim, adjacent to where the bead is broken. Repeat the process at the next spot. On very old and stubborn tires, you may need to use the tool 3-4 times around the rim.
Some wheel types (such as Sprint Cars) have a very tight interference between the Tire and Wheel, and the force required to break the bead is very high. The stock XB-455 Ram Foot can withstand a tip load of at least 3,000 lbs, but in some cases these tightly fitting tires can exceed even that. The reason is because when you start to break the bead on one side of the wheel, it is putting the steel cord (Bead Bundle) in hoop tension, and you are essentially stretching it.
For these cases, even some very stubborn ATV wheels, to prevent bending the ram foot you need to avoid trying to use the full travel of the Ram Foot. Instead, you need to take more frequent, smaller ‘bites’ around the rim. We call it the “Inch-Worm Technique”. Break the bead in one spot, extending the Ram ony about 3/4″-1″, and then work your way around, every few inches…this will minimize how much you have to stretch the Bead Bundle. This technique is necessary only on the most stubborn wheels, and sometimes on wide ATV wheels, on the side opposite of the drop center.