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So, how does a super-sticky track tire with a 00 treadwear rating end up with a Traction grade of B? The answer is that the traction grade is based on a tire’s straight-line WET coefficient of traction as it skids across a specific test surface. It has absolutely nothing to do with dry cornering, dry braking, hydroplaning, or even wet cornering. The temperature grade indicates how a tire generates, dissipates, and resists the effects of heat. Obviously, if a tire can’t handle heat buildup, then it won’t be able to handle high speeds. Any tire that has a higher speed rating will most assuredly have a temperature grade of A.