Tyre speed ratings
Making sure your trailer is fitted with the correct tyres is very important. Here is a short guide to tyre speed ratings.
Tyre speed ratings are writen on the wall of a tyre. They can be identified by alphabetical letters ‘J’ through to ‘V’, with ‘J’ being the slowest.
| Tyre Letter Rating | Max Speed (mph) | Max Speed (km/h) |
|---|---|---|
| J | 60 | 97 |
| K | 69 | 111 |
| L | 75 | 120 |
| M | 81 | 130 |
| N | 87 | 140 |
| P | 93 | 150 |
| Q | 100 | 161 |
| R | 106 | 170 |
| S | 113 | 182 |
| T | 118 | 190 |
| U | 124 | 200 |
After 200km/h (124mph) the letter ratings are for performance cars.
| Tyre Letter Rating | Max Speed (mph) | Max Speed (km/h) |
|---|---|---|
| H | 130 | 209 |
| V | 150 | 241 |
After 240km/h (150mph) tyres are marked with ZR, and may also have a W or Y. The W means the tyre is restricted to 270km/h (168 mph), and the Y means the tyre is restricted to 300km/h (186 mph).
Related articles:
Wheel Measurements
Working Out Your PCD
Trailer Tyre Load Index
Trailer Wheel Offset
If you are looking to buy trailer wheels and tyres, choose from a large selection at 