The speed rating that the tyre corresponds to.
This indicator determines the maximum speed that tyre is allowed to operate. It is designated by the letters of the Latin alphabet, each of which corresponds to a certain speed limit:
F — 80 km/h; G — 90 km/h; J — 100 km/h; K — 110 km/h; L — 120 km/h; M — 130 km/h; N — 140 km/h; P —
150 km/h ; Q —
160 km/h ; R —
170 km/h ; S —
180 km/h ; T —
190 km/h ; U —
200 km/h ; H —
210 km/h ; V —
240 km/h ; W —
270 km/h ; Y —
300 km/h ;
The maximum permitted speed must not be exceeded — this creates the risk of an accident. However, there are other rules associated with choosing a tyre by this factor. So, ideally, the actual driving speed should be at least 10 – 15% lower than the speed rating of the installed tyres — this will give an additional guarantee in case of emergency situations. In addition, in some tyre models, as the speed approaches the maximum, the upper limit of allowable load is reduced; see “Load Index” for details.
Recommendations of the vehicle manufacturer regarding the ideal tires for a specific car model.
Homologated tires take into account the technical and design features of machine, right down to the factory suspension settings, which helps to reveal the full potential of the "iron horse". Manufacturer-approved tires are recommended to be installed only on the wheels of suitable cars, and in some cases, without the use of homologated tires, machine risks losing its warranty. The sharpening of tires for a specific brand and model of car is indicated by specialized homologation markings.
The shelves of tire stores most often feature homologated tires for the following brands of cars:
Audi(including
Audi RS,
Alfa Romeo,
BMW / Mini,
Ferrari,
Mercedes-Benz(including
Mercedes AMG),
Maserati,
Porsche,
Tesla,
Volvo,
Volkswagen.
