Service Description

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Service Description
Related Categories: Tire Load Index | Load Index | Changing Tire Sizes | Blackwall | Mo | Sidewall Style | 91w | Part Number | Load Index Chart | Speed Rating Chart
  • One of These Things is Not Like the Other!

  • …below you'll see the same tire, but it says "N3 Porsche" or "MO Mercedes" below it. Here are the most common places to find differences that are not immediately apparent: Service Description - Speed Rating Original Equipment Designation - Service Description Sidewall Style

  • Related Products: Changing Tire Sizes | Blackwall | Mo
  • Understanding Speed Ratings

  • …km/h; the W in the service description indicates the tire's 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…

  • Related Products: 91w | H Speed Rating | R Speed Rating
  • 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."

  • What Does "ZR" Mean?

  • …you'll see that the 245/40ZR18 has a service description of 97Y, which means it is a Z-speed rated tire, but more specifically, it is a Y-speed rated tire. The same tire with a V or H speed rating will not show a "Z" in the size or service description, just a 97V or a 97H. To view all…

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