Meaning Of Tire Ratings

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Meaning Of Tire Ratings
Related Categories: 91w | Speed Ratings Explained | Treadwear Number | Tread Wear 700 | 225 75r15 | Load Range Weight | Heavy Duty Trailer Tires | Speed Rating Letters | Trailer Tire Speed Rating | Lt 225 75r15
  • Understanding Speed Ratings

  • …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 of the tire. Shown below…

  • What Does the UTQG Rating Mean?

  • …for tires the rating of most interest to consumers is the UTQG. However, this is also the rating with the least amount of consistency among manufacturers. It's important to realize that the Department of Transportation does not conduct these tests. The UTQG ratings are assigned by the tire

  • Tire Speed Ratings

  • …not recommended by the tire manufacturers. Tire speed ratings were established to make sure speed capabilities between tire and vehicle were in agreement. Meaning, the vehicle should only go as fast as the lowest speed rated tire on it. Read "How to Read Speed Rating, Load Index & Service…


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