Z Rated

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Z Rated
Related Categories: Z Rated Tires | 91w | Winter Tire Speed Rating | Longest Wearing Tires | Speed Rating Letters | Zr Speed Rated | Best Low Profile Tire | Treadwear Rating | Speed Rating | H Rating
  • 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…


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