Tire Speed Rating Question
I'm posting this here because the speed rating of a tire seems to me to cross all lines/types of vehicles. Reading up on warranty issues/questions just now, I came across the following language ...
Forum Discussion
Yokohama explanation. They still warrant the tires except for the repaired area...Also tires are capable of up to 85mph. As per "Beercan".. (N rated tires originally exceed 85mph.).
Repair of Speed-Rated Tires
Because the tire manufacturer cannot monitor the quality of the repairs for speed-rated tires, once such a tire is repaired for any reason, that area ultimately diminishes the tire's designated speed rating. This applies to Yokohama tires with ratings of "N" or higher. Although the warranty will cover warrantable conditions unrelated to the repair area, the tire no longer is representative of its original manufactured condition because it has been altered. As a result, the speed rating of the tire is void after repairs have been performed. The tire is capable of running at normal sustained highway speeds up to 85 MPH if repairs are made following RMA Standards. Punctures and nail holes up to 1/4 inch diameter which are confined to the tread area may be patched permanently only from the inside of the tire along with filling the perforation of the tread caused by the nail. NEVER REPAIR TIRES WORN BELOW 2/32 INCH TREAD DEPTH. Some OE vehicle manufacturers do not allow repairs of any kind.
Repair of Speed-Rated Tires
Because the tire manufacturer cannot monitor the quality of the repairs for speed-rated tires, once such a tire is repaired for any reason, that area ultimately diminishes the tire's designated speed rating. This applies to Yokohama tires with ratings of "N" or higher. Although the warranty will cover warrantable conditions unrelated to the repair area, the tire no longer is representative of its original manufactured condition because it has been altered. As a result, the speed rating of the tire is void after repairs have been performed. The tire is capable of running at normal sustained highway speeds up to 85 MPH if repairs are made following RMA Standards. Punctures and nail holes up to 1/4 inch diameter which are confined to the tread area may be patched permanently only from the inside of the tire along with filling the perforation of the tread caused by the nail. NEVER REPAIR TIRES WORN BELOW 2/32 INCH TREAD DEPTH. Some OE vehicle manufacturers do not allow repairs of any kind.
