Which model would you recommend for a shop (higher volume). Also, why doesn't the bar on the pro model engage the wheel? The jr pro model seems more stable in the videos even with a smaller bar. Lastly, do you have any videos showing breaking the bead on an old tire and wheel that's really stuck? Thanks, Jerry P.

Our Pro Model is recommended for frequent daily shop use, so that a technition can go from a very narrow to a very wide tire with seldom adjustment. The large arm on the Pro Model supports the center pivot post while usung the Mount/Demount bar. You would notice if you had an open hub wheel that was very wide the Jr Pro Arm would be a little less stable while pivoting near the top while the end was captive by the "Cup" welded on the frame arm below the wheel as the center post would need to be "Through" the wheel because it had no bearing. If that makes sense to you. You would have needed to Raise the back post to break the bead on that sort of wheel and then lower it to keep the center post held captive while in the Welded Cup. Basically the Pro Model is easier to use. The Linkage on the pro arm is more sturdy than previous with less play in the pin. The older videos show it moving a little. It is in it's 4th generation since the original videos. We tested the strength of the pin with 3 200 lb+ men ramming the arm to attempt to bend or malfunction the pin assembly. The machine will tear out of the floor anchors before the pin bends or fails. As far as breaking the bead goes, one of our typical demonstrations is to break the bead on a sport bike tire with 30 psi still in it on our Classic model. The Pro break arms have twice the applied bead break pressure. It is possible to shred the tire with the ATV breaker T if the tire is so stuck on the wheel with bead bonder. We don't have anything for that situation except a die grinder. The machine can apply lots of pressure. Standard automotive and truck tires are no match for it unless it is a Run Flat tire. You will be unable to break the bead of a run flat tire on any of our equipment.