PZero System is the world's first individually matched directional and asymmetric ultra high performance tire. Designed for use in tandem, or separately, according to the type of car, conditions of use and driving style. Its racing construction offers superior torsional strength, grip and steering response under stress. Direzionale: The directional design solves the problem of wet grip and aquaplaning associated with high performance cars fitted with wide-section front tires. PZero Direzionale maximises water expulsion, leaving a drier surface for the rear Asimmetrico
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.