Tyre speed index
Besides load index, maximum permitted driving speed is also an important characteristic of tyre performance. Maximum speed is indicated in literal index. Sometimes speed index is called speed category.
We would like you to pay attention to some specifications of this index understanding.
1. Speed index specifies maximum permitted speed at the indicated loading for long distance driving, that is if you drive your car at speed 210 km/h during 15 minutes, while the permitted max. speed is 190 km/h, nothing dangerous can happen. But at longer distance driving, distortion and even breaking of tyre due to overheating can occur.
2. At car loading close to maximum, standard recommendations of manufacturers can differ. It concerns, to a greater extend, truck and light truck tyres. For example, at 90% car loading speed chould not exceed 90% of maximum, at 100% - 80%. More detailed information can be found in tyre specifications.
| Speed index | J | K | L | M | N | P | Q | R | S | T | U | H | V | W | Y | ZR |
| Мax. speed, km/h | 100 | 110 | 120 | 130 | 140 | 150 | 160 | 170 | 180 | 190 | 200 | 210 | 240 | 270 | 300 | >240 |
CJSC "Rosava" manufactures tubeless tyres for passenger cars and light trucks.
Tubeless tyres have some advantages comparing to tube tyres, therefore they gradually gain the market. They have lower mass, better balance and at tyre blowout they lose air slower than tube tyres. Puncture can be sealed hermetically without removing the tyre from the wheel.  |
Tubeless tyre construction:
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- Useful advice
- Table of conversion of pressure units
- Tyre load index table
- Tyre speed index
- Tyre mounting and dismounting
- Letter E in a circle and DOT on «Rosava» tyres
- What for do tyres need inert gas?