Speed Rating Letters

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Speed Rating Letters
Related Categories: What Does Z Mean On The Tires | Speed Rating Chart | 91w | Trailer Tire Size Chart | Trailer Tire Load Range Chart | Blackwall | St225-75r15 | Tire Temperature Rating | 8.00r16.5lt | Tire Size Chart
  • One of These Things is Not Like the Other!

  • …on with that? Tire manufacturers will give different part numbers to the same model of tires if the tires have a different sidewall styling, speed rating, load index or O.E. designation. These differences in the tires are enough to earn different part numbers and prices which are subject to the…

  • Related Products: Blackwall | Part Number | Sidewall Style
  • 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 | R Speed Rating | H 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."

  • Related Products: What Does Xl Mean | Load Rating Xl | Gawr
  • 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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