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Related Categories: 91w | Q Speed Rating | R Speed Rating | Winter Tire Speed Rating | Load And Speed Rating | Meaning Of Tire Ratings | Tire Sidewall Ratings | 225 45zr17 91w | Z Rated | M S Meaning
  • Understanding Speed Ratings

  • Ever wonder what the letter in your tire size means? For 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…

  • Related Products: 91w | Q Speed Rating | R Speed Rating

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