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Related Categories: Speed Rating Chart | H Speed Rating | H V T Rating | Speed Rating Letters | Speed Rating | 205 55 16 | Lower Speed Rating | V Speed Rating | 205 55-16 | Honda Accord Tires
  • Understanding Speed Ratings
  • …example, the "Z" in 245/45ZR17 or the "H" in 205/55R16 89H. This letter is the speed rating of the tire. Tires are tested in laboratory conditions under load by tire manufacturers to determine the maximum speed capability of the tire. Shown below is what the speed rating letter equates to in MPH. L 75 mph…

  • Speed Rating. Why is it Important?
  • Speed ratings are as follows: S: 112 mph T: 118 mph U: 124 mph H: 130 mph V: 149 mph Z: Was the highest rating in the 1980s at 150 + mph With the advent of new sports cars that well exceeded the 150 mph barrier, the tire industry adopted a few new speed ratings: W: 168 mph Y: 186 mph Every tire that…




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