Speed Rating. When Z-speed rated tires were first introduced, they were thought to reflect the highest tire speed rating that would ever be required, in excess of 240 km/h or 149 mph. While Z-speed rated tires are capable of speeds in excess of 149 mph, how far above 149 mph was not identified.
The Yokohama AVID ENVigor tire line includes H-and V-speed rated High Performance All-Season radials developed to meet the year-round driving needs of sports car, coupe, sedan and crossover drivers. AVID ENVigor tires are designed to combine performance, comfort and treadlife along with all-season…
Speed Rating H. It represents a maximum speed of 130 mph (210 kph) and is commonly found on sports sedans and coupes. In earlier incarnations of the speed rating system, “H” stood for “high performance,” which is why it maintains an unusual position in the speed rating spectrum today.
Speed rating. Prior to 1991, tire speed ratings were shown inside the tire size, before the "R" construction type. The available codes were SR (180 km/h, 112 mph), HR (210 km/h, 130 mph), VR (in excess of 210 km/h, 130 mph). Tires with a speed rating higher than 300 km/h (186 mph) are indicated by a Y in parentheses.
Speed rating ensures a vehicle’s tires match its top speed capability. Going back to our Audi, the H speed rating is equal to 130 miles per hour, meaning that under optimal conditions, the tire can perform at speeds up to 130 mph. Now just a second, leadfoot … that doesn’t mean you should drive 130 mph.
The Origin of Speed Ratings. For example, H is between U and V, with the common perception that H stood for “high performance” at one time. As manufacturers continue to add speed to their vehicles, tire speed ratings evolve to match the speeds. For example, Z was the highest rated speed at 149+ until W & Y were used to match the higher speeds of exotic sports cars.
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Tire speed rating is the top speed a tire can safely keep over time. View our tire speed rating chart and visit your local Tires Plus to learn more today!.
Find General AltiMAX RT43 H or V Speed Rated at Tire Rack. Tire ratings charts and reviews. Next day delivery to most!.
GOST Cyrillic was an arithmetic film speed scale defined in GOST 2817 45 and GOST 2817 50. It was used in the former Soviet Union since October 1951,  replacing Hurter Driffield H D, Cyrillic numbers, which had been used since 1928. GOST 2817 50 was similar to the ASA standard, having been based on a speed point at a density 0.2 above .
What do the numbers and letters on tires mean? Understanding tire service description, load rating, and speed rating. If you look at the sidewall of a tire, you’ll see a whole slew of characters and numbers..