Tire Repairs
For repairs, see any tire dealer at once.
Never use a plug-only or patch-only repair. If any tire has sustained a puncture, have the tire dismounted and inspected internally by any tire dealer for possible damage that may have occurred.
Punctures in the tread of passenger tires which do not exceed 1/4-inch (6mm) in diameter can be repaired by following Rubber Manufacturers' Association (RMA) recommended repair procedures. A plug by itself or a patch by itself is an unacceptable repair. The repair material used - for example, a "combination patch and plug" repair - must seal the innerliner and fill the injury to be considered a permanent repair. Never use a tube in a tubeless tire as a substitute for a proper repair.
If the tire has a puncture in the tread which exceeds 1/4-inch (6mm), any puncture in the sidewall, or if more than one radial cable per casing ply is damaged, the tire must be removed from service and replaced.
For more information, see Cooper Service Bulletin # 108 "Puncture Repair Procedures for Passenger and Light Truck Tires".
Speed Ratings. When a Cooper-produced speed rated tire has been repaired, the speed rating no longer applies.
The speed capability of the vehicle is limited by the speed capability of the repaired tire. When a Cooper-produced speed rated passenger tire has been repaired, the tire's maximum speed is 85 mph (137 km/h).
For more information, see Cooper Service Bulletin # 94 "Safety Warning - Speed Rated Tires"