What is the speed index:
- Speed ??Index shows maximum speed under normal load (a claimed load index) for the duration of the trip. Let's say you drive a car at a speed of 220 km / h on the Tireses with the established maximum speed of 200 km / h for 15 minutes and still nothing happens ... But if we move at the same rate for a longer time, because of possible overheating or deformation of the tires of their destruction.
- Standard manufacturer's recommendations, with the loads on the car close to the maximum may be different. This is mainly related to tires for heavy trucks and vans. Let's say at 90% duty rate should not exceed 90% of the maximum at 100% - 80%. Clarification and instructions specified in the detailed specifications of tires.
| Index |
J |
K |
L |
M |
N |
P |
Q |
R |
S |
T |
U |
H |
V |
W |
Y |
ZR |
| km / h |
100 |
110 |
120 |
130 |
140 |
150 |
160 |
170 |
180 |
190 |
200 |
210 |
240 |
270 |
300 |
240 |
- Tires marked with "ZR" - designed for speeds exceeding 240 km / h .
- Tires marked "V" together with an index of carrying capacity, such as 91V, are designed for speeds exceeding 210 km / h to 240 km / h. (This load index is specified for a speed of 210 km / h. The load should be reduced by 3% for each increase in speed of 10 km / h to 240 km / h).
- Tires marked "W" together with the load index, for example 100W are designed for speeds exceeding 240 km / h to 270 km / h. (This load index is specified for a speed of 240 km / h. The load should be reduced to 5% for each increase in speed of 10 km / h to 270 km / h) Tyres marked with an index of speed "W", may have additional marking "ZR" .
- Tires marked "Y" together with an index of carrying capacity, such as 95Y designed for speeds exceeding 270 km / h to 300 km / h. (This load index is indicated for the speed of 270 km / h. The load should be reduced to 5% for each increase in speed of 10 km / h to 300 km / h).
Speed ??category is assigned to the Tires on the results of the special bench test implies
maximum rate that withstands the Tires. That is the rate at the slightest excess of which no one can guarantee that the Tires starts to fall apart. And for the operation, a "gentle" mode - the car must travel at a rate of 10-15% smaller than the one that "allowed for" tires.
