Z Rated

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Z Rated
Related Categories: Z Rated Tires | 91w | Best Tires For Corvette | Best Treadwear | Best Z Rated Tires | Zr Meaning | Zr Speed Rated | Longest Wearing Tires | Longest Lasting Tire | 20 Low Profile 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…


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