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Related Categories: Bmw X5 Run Flat | Run Flat 235 55r18 | Run Flat Tires Lexus | Rav4 Tires | Bmw X6 Tires | 205 45r17 Run Flat | 255 55r18 | Run Flat Tires Mini Cooper | 245 40r18 | Tire Load Index
  • What Does "ZR" Mean?

  • …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 is called the service…

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