[Johnnyquest]

Discount tires say they are R rated which is 112 mph and this is from the tirerack website

The Drag Radial's growing popularity has generated some questions about the tire's high speed capabilities because, unlike other Ultra High Performance street radials, its speed capability is not indicated on the sidewall by a speed symbol in its size or service description. While the Comp T/A Drag Radial has many of the internal construction features usually found in high speed radial tires, the feature that prevents it from being speed rated in the "normal" ways is its unique high-hysteresis tread compound. This compound has extreme energy-absorption characteristics that help the Drag Radial readily conform to the track surface to help launch the car and take it to victory...one quarter-mile at a time. This same tread compound, when subjected to continuous operation at very high speeds, could possibly overheat and blister (just like a super-sticky "qualifying tire" used in professional oval track or road racing competition). Thus, even if the Comp T/A Drag Radial is available in a vehicle's ideal size for use in activities other than drag racing, it should not be used in competition where the car and tire will be exposed to sustained high speeds.

Sure is nice to find a tire that hooks that's for sure. Glad you like em.

Randy