What is the Speed Rating on Tires?

1 Answers
MacNora
07/29/25 8:01pm
Tire speed rating refers to the maximum speed a tire can safely maintain under specified conditions while carrying its designated load. Different tires display their speed ratings on the sidewall using English letters. The speed ratings represented by these letters are as follows: 1. Q: 160 km/h; 2. R: 170 km/h; 3. S: 180 km/h; 4. T: 190 km/h; 5. H: 210 km/h; 6. V: 240 km/h; 7. W: 270 km/h; 8. Y: 300 km/h; 9. Z: ZR speed exceeds 240 km/h.
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