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Speed Rating Letters
Related Categories: Speed Rating Chart | What Does Z Mean On The Tires | Speed Rating | Service Description | 91w | Z Speed Rating | Matching Wheel Width To Tire Width | 225/50zr16 | Tire Comparison Chart | Spare Tire
  • Government Tire Approval Marks | Tire Rack

  • …governmental approval codes follow. Brazil Inmetro - National Institute of Metrology, Standardization and Industrial Quality The letter "N" superimposed over the letter "I" (sometimes erroneously called the "I" code). China China Compulsory Certification (CCC) Mark China Compulsory Certification…

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