Speed Rating Letters

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Speed Rating Letters
Related Categories: Difference Between H And V Rating | Speed Rating Chart | What Does Z Mean On The Tires | Trailer Tire Load Range Chart | 91w | Speed Rating | Trailer Tire Speed Rating | What Does Xl Mean | H V T Rating | Lower Speed Rating
  • Understanding Speed Ratings

  • …168 mph, 270 km/h maximum speed. You can learn more about speed rating and the other letters and numbers on the sidewall of your tire in "How to Read Speed Rating, Load Index & Service Descriptions." Disclaimer: It is important to note that speed ratings only apply to tires that have…

  • Related Products: 91w | Speed Rating | Q Speed Rating
  • What Does "ZR" Mean?

  • …bit about speed ratings. Speed ratings on tires are expressed in letters and are generally listed along with the load index for a tire after the size, for instance 245/40R18 93H. 93 is a load index and the "H" is the speed rating. Together, the load index and speed rating make up what…

  • What Does 'XL' Stand For?

  • …two tires per axle, the tire load rating must be at least half of the GAWR. The vehicle placard will also list the service description of the original tires. To learn more about tire service descriptions, take a look at "How to Read Speed Ratings, Load Index, & Service Descriptions."

  • Tire Speed Ratings

  • …89S, the letter "S" would represent your tire speed ratings. But what does it mean? Tire speed ratings tell you how fast you can drive on your particular tires. Sounds crazy when you look at the numbers associated with speed ratings, but in Europe, some highways don't have speed limits and…

  • Abbreviations Worth Remembering

  • …= Z speed rating (149+) and radial construction* TPMS = tire pressure monitor system* WS = white sidewall stripeThe list can go on on from here, but these are some of the more common abbreviations used in the tire industry. * ROF = run on flat * RF = reinforced sidewall* OWL = outlined white letter*


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