Meaning Of Tire Ratings

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Meaning Of Tire Ratings
Related Categories: 91w | Tire Temperature Rating | Speed Ratings Explained | Utqg | Temperature B | Q Speed Rating | Speed Rating | Speed Rating Letters | Treadwear Rating | Utqg Meaning
  • 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…

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

  • Tire Rack Customer Survey Glossary of Terms

  • …common questions I get from customers new to Tire Rack is "what do each of the Tire Survey Results rating categories mean?" So, I thought I would take a minute to help clear this up! Dry Traction This is an indication of the tire's ability to corner, brake, and grip during acceleration…

  • Related Products: Tire Noise Rating
  • Do my tires lose AIR pressure?

  • …ambient air temperature your tire pressure changes by 1 PSI (UP or DOWN)? Did you know that 3 PSI change could mean a 10% reduction in the load rating of your tire? It also means the increase of heat and rolling resistance, thus damaging your gas mileage! Keeping your tires "topped of"…


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