The key to the S.drive's remarkable durability is the heat-resistant rubber compound which is similar to the one in the legendary dual duty road and racing tyre the ADVAN Neova. Fast acceleration, high speed cornering and hard braking brings the best out of the S.drive. They can even survive the occasional track day. It suits high horsepower cars with big wheels that require low profile tyres.
The load rating (represented by the numerical value) is related to the maximum weight that tyre can carry. So in this case 105 would refer to a load capacity of 925kg, with most passenger vehicle load indexes range from 62 to 126.
In all instances the tyres load index must meet or exceed the value displayed on the vehicles placard.
The speed category symbol, for example 'S', indicates the maximum speed at which the tyre can carry a load corresponding to its load index. So in this case, 'S' would refer to a maximum speed of 180km/hour.
See the chart below for a full list of speed symbols and their applicable values.