Rather than guessing or relying on here-say. Do a Google search on RFT Tire repair. Her is the information directly from the Michelin site:
If your tire becomes damaged, it may be repaired if it meets the following criteria:
1.The tire has not been driven on when flat
2.The damage is only on the tread section of your tire (sidewall damage ruins a tire immediately) and/or
3.The puncture is no greater than ¼"
For help on how to inspect your tire, click here.
If your tire is flat, we can help teach you how to change a tire.
Patch, Yes. Plug, No.
The proper way to have a tire repaired is to patch the tire from the inside and fill the puncture hole. Do not have your tire plugged. Ever. Plug repairs do not involve taking the tire off the wheel for a proper inspection. A plug is simply inserted into the punctured area, making it unreliable. Insist on a full inspection and have your dealer demount and internally as well as externally inspect the tire, patch and fill the repair on the inside of the tire.
If you need to find the right new tire for your vehicle, use the Team Michelin Tire Selector.
A "patch-plug" is made for just this purpose. It is inserted from inside the tire to plug the hole and includes a patch that covers the repair on the inside of the tire. The plug prevents water and debris from entering the hole (steel belts can actually rust) and the patch seals the tire.
Last edited by haskindm; 10-03-2012 at 02:46 PM.
Reason: add info