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How do I read a tire size?

  1. Tubeless: No tube is used, when mounted on a tubeless rim; abbreviated "TL"
     
  2. Rear: Direction of rotation for rear tire, indicated by an arrow on the tire sidewall
     
  3. Michelin: Tire manufacturer
     
  4. 73 Load index: For example, 73 corresponds to a load of 805 pounds (365kg) per tire
     
  5. Radial
     
  6. Pilot Power 3: The tire's model name
     
  7. 190: Nominal section width of the tire, expressed in millimeters
     
  8. 55: Aspect ratio, the sidewall height as a proportion of the tire width
     
  9. R: Radial construction
     
  10. 17: Bead-seat diameter of the wheel, expressed in inches (1 inch = 2.54 cm)