Load index
The load index is a numerical code that corresponds to the maximum weight a tyre can support. A tyre's load multiplied by 2 must cover the gross single axle load of your vehicle. To determine your load index, locate the number on the sidewall of one of your tyres and compare it with the load index table.
Mounting tyres with a lower load index than that of the original tyres or than that recommended by the vehicle's manufacturer is prohibited. However, it is completely acceptable to mount tyres with a higher load index.

Speed index
The speed index is a letter code that corresponds to a tyre's maximum speed. To determine your speed index, locate the letter on the sidewall of one of your tyres and compare it with the speed index table.

Mounting tyres with a lower speed index than that of the original tyres or than that recommended by the vehicle's manufacturer is prohibited. However, it is completely acceptable to mount tyres with a higher speed index.

Manufacturers calculate these speed indexes using tyres that are in good condition.

The speed indexes were defined for enclosed speedways. Depending on the different speed indexes, tyres warm up less and lose shape less and are more efficient at higher speeds. NB: even though the tyres you mount have capacities which are well over speed limits, no manufacturer recommends the use of tyres at unauthorised speeds.