C clamp? Really? Next time try this.
Here it is: the world's cheapest (and most effective) motorcycle tire bead breaker!This method has not failed me yet; it works on bias or radial ply tires, old or new style rims, spoke or cast wheels.The only materials that are needed for this device are a couple of pieces of 2x4 lumber: One 2x4 (or 2x3), about 7 or 8 feet long, and a smaller piece, maybe a foot long or so.
Place the wheel on the ground about 1 meter from a parked car. Make sure you lay a couple of pieces of 2x4 (or 2x3, as shown in photo left) under the rim to protect the brake disk rotor and rim from damage.
Slip the long 2x4 under the door sill of the car, and place the shorter piece on the edge of the tire, right up next to the rim.
You can get fancy if you'd like and put a hinge on the longer piece so that the shorter piece hangs down, but I find it more challenging (and easier) to simply hold the shorter piece and put a bit of pressure on it to keep it in place.
Place one foot over the opposite side of the rim, and lever away! Most tires will pop right off the rim with a bit o' pressure, but you may find that some tires need a sharp push to get the bead to break.In any case, this is the fastest, simplest and most effective method of bead breaking I've ever tried. It doesn't make levering the tire on and off the rim any easier, but it sure makes breaking the bead a piece of cake. Forget about all those expensive dedicated bead breaking tools -- you don't need 'em!
I use a method similar to this, but instead of the car, I have a 2x4 bolted horizontally between 2 studs.
Vic's right, piece of cake. Add a couple of Motion Pro rim protectors and you're good to go.
I took the $$$ I saved and sprung for a Marc Parnes balancer. Expensive, but nice.
