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Wow, that is bad luck - four tires at once. If they damaged your rims, you should get some compensation. Changing run flats is a bit of an art and requires special tools: "Today’s run-flat tires all have stiff sidewalls (see Figure 2). This means older conventional tire changing equipment may not be used. Equipment makers have special equipment and procedures to mount run-flat tires. The bead must be carefully pressed off the seat on the wheel. One company that makes wheel-changing equipment has produced a five-page manual specifically for mounting and demounting run-flat tires. The manual explains how mounting this type of tire can't be hurried. With run-flat tires, patience is required "to give the bead time to relax." Tire changing machines designed for use with run-flat tires use rollers to slowly press the bead off the wheel, and special tools to keep the bead unseated during the process. During mounting the bead must be well lubricated and air pressure kept below 40 psi."
Why don't you order the tires from Canadian supplier? Here in Europe there is no shortage....I just replaced mine...
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