Tyre speed rating
Tyre speed rating chart.
| Symbol | km/h | mph |
|---|---|---|
| L | 120 | 75 |
| M | 130 | 81 |
| N | 140 | 87 |
| P | 150 | 93 |
| Q | 160 | 99 |
| R | 170 | 106 |
| S | 180 | 112 |
| T | 190 | 118 |
| U | 200 | 124 |
| H | 210 | 130 |
| V | 240 | 149 |
| W | 270 | 168 |
| Y | 300 | 186 |
| (Y) | over 300 | over 186 |
Ratings assume a correctly inflated tyre at its rated load. Heat, underinflation and overloading all cut the real limit, which is why a car that never sees 240 km/h can still be specified a V or W tyre: the margin keeps the tyre cool and stable.
Typical fitments: H or V on most family cars and SUVs, W or Y on hot hatches and sports cars, and Y or (Y) on supercars. Utes and 4x4s on light-truck tyres often run Q, R, S or T.
Always fit at least the speed rating on your vehicle’s tyre placard, usually in the driver’s door jamb.
Speed rating questions
What does the speed rating on a tyre mean?
The letter after the load index, such as the Y in 97Y, is the highest speed the tyre is certified to sustain at its full rated load and correct pressure. Y is 300 km/h, W 270 km/h, V 240 km/h and H 210 km/h.
Can I fit tyres with a lower speed rating?
Generally no. Fit at least the load index and speed rating on your vehicle's tyre placard: a lower-rated tyre can make the car unroadworthy and may affect your insurance. Some jurisdictions allow exceptions, such as for winter tyres, so check with your transport authority first.
What does ZR mean on a tyre?
ZR marks a radial tyre rated above 240 km/h. Modern ZR sizes also carry a speed symbol after the load index (W, Y or (Y)) that says exactly how far above. A (Y) in brackets means rated above 300 km/h; the maker states the real limit.
Does a higher speed rating mean more grip?
Often, but not always. Higher-rated tyres usually have stiffer construction and sharper steering, but the compound decides grip. Compare tyres by independent test results, not by the speed letter.