Is it safe to repair a flat tire?
If a tire loses all or most of its air pressure, it must be removed from the wheel for a complete internal inspection to be sure it's not damaged. Tires that are run even short distances while flat are often damaged beyond repair. Most punctures nail holes, or cuts up to 1/4 inch which are confined to the tread may be satisfactorily repaired by trained personnel using industry-approved methods. Don't repair tires with tread punctures larger than 1/4 inch, or with any sidewall puncture. Also, never repair tires that are worn below 1/16 inch tread depth. Your Advisor and tire technician can advise you.