![]() That said, even a C graded tire is still able to pass the Department of Transportation high speed test for highway use. Ultimately, a tire with a higher temperature rating is better suited to operating for an extended time at higher speeds, as it will be more likely (when properly inflated and loaded) to withstand the heat of driving at those higher speeds. A higher-rated tire is better able to dissipate and withstand the stress of heat while being tested under controlled situations. ![]() Temperature Rating: The temperature grade on a tire is listed in three steps – A, B, and C – with A being the highest grade, and C being the lowest. Order within 7 hrs 48 mins Select delivery location In Stock Qty: 1 Buy Now Payment Secure transaction Ships from Sold by Returns Eligible for Return, Refund or Replacement within 30 days of receipt Payment Secure transaction We work hard to protect your security and privacy. These grades are based on braking traction on wet pavement and represent the amount of g-force of stopping power each tire can withstand without skidding, as compared to the control tire. 13398 FREE Returns FREE delivery Tuesday, June 6. AA is the highest traction, while C is the lowest. Tires being graded for the UTQG are tested under controlled situations on both wet asphalt and wet concrete. Traction Rating: The traction rating on a tire is the measurement of how a tire can stop on wet surfaces. Actual treadwear will vary, of course, based on driving habits, air pressure maintenance, differing climates, and even road surface differences. Theoretically, a tire with a treadwear rating of 200 should wear twice as well as the 100 treadwear control tires. The control tire has a standard treadwear rating of 100. The treadwear grade is a numerical figure assigned by the tire’s manufacturer and based on projections of how the tire wears versus a standard industry control tire after running 7200 miles on a designated public highway route in Texas, under controlled conditions. Treadwear Rating: Treadwear is exactly what it sounds like – a measure of how the rubber on the tread of the tire wears over time.
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