Tire Speed Ratings

The following is the design limit for extended use:

  • Q — 99 mph
  • R — 106 mph
  • S — 112 mph
  • T — 118 mph
  • U — 124 mph
  • H — 130 mph
  • V — 149 mph
  • W — 168 mph
  • Y — 186 mph
  • ZR — 186+ mph
For tires over 149 mph, some manufactures use ZR but others will use the same rating for over 186 mph. Therefore, you should check with the manufacturer for specific use.

Sep. 3rd, 2004