Seasonal tyre changeover is not a marketing ploy, but a safety measur


Conscious drivers prepare a car for the winter season in advance. They pay special attention to tyres, realizing that tyre changeover is not a marketing ploy, but traffic safety in the first place. After all, summer and winter tyres differ fundamentally from each other by chemical composition of rubber and by tread pattern. As a result, they have different technical characteristics of safety, which can lead to the corresponding consequences.

Unfortunately, there are troublesome drivers which ignore recommendations regarding use of tyres according to the season. Quite a lot of car owners in Ukraine use summer tyres in winter. Such cost saving ends tragically not only for them. Experts say the number of accidents increases up to 40% by the end of autumn - at the beginning of winter, when summer tyre has poor gripping with ice-covered road surface.

It should be noted that in a number of western countries a car owner shall pay heavy fines, if the tyres on his car do not correspond to the season. In Ukraine, such law is not adopted, and every driver, no matter how skillful he considers himself, should remember how easy it is to get into an accident and put somebody’s life (and not only his own) at risk, using summer tyres in winter.

Every year, socially responsible companies implement various projects to improve traffic safety and draw the attention of drivers to such important issue as seasonal tyre swapping.

When is it time to swap?

Once the average daily temperature in autumn is +7 +5 degrees Celsius during a week, it’s time to switch to winter tyres.

Differences between summer and winter tyres

Tread and other rubber compounds of summer tyres harden in the cold. Starting from the average daily temperature of +7 degrees Celsius, the tyres become rigid, their ability to reliably contact with the road is rapidly decreasing, resembling slipping. That is, summer tyres do not guarantee safety in winter.

Rubber compounds in winter tyres are more elastic at low temperatures. Starting from 0 degrees, they provide reliable car control. Due to their chemical composition, winter tyres have a good grip on a smooth surface, providing short braking distance and stability, especially on corners. And when the tyres are used

in summer, starting with + 10 degrees, they wear out quickly, increasing the degree of tread wear.

Difference in tread pattern

Tread pattern of winter tyres has deeper, than in summer tyres, grooves and blocks that separate them. In the result, they have good self-cleaning properties, can deeply cut into the solid surface of the road covered with snow and dirt, providing a good grip.

The summer tyres have more longitudinal and shallow grooves, which reduce the risk of aquaplaning.

Types of winter tyres

There are several types of winter tread patterns (European, Scandinavian, studded/studdable), choosing which one must take into consideration the climatic conditions of the region where tyres will be operating.


European type (for mild winter)

PREMIORRI ViaMaggiore

Scandinavian type (for harsh winter)

PREMIORRI ViaMaggiore Z Plus

Studded/studdable type (for regions with ice-covered roads)

ROSAVA SNOWGARD


PREMIORRI ViaMaggiore with European winter tread pattern. Features of the tread pattern: many transverse grooves quickly remove water and slush, providing increased grip on the wet road. Serrated outer lugs increase the stability and grip on packed snow and ice. New materials and technologies used in production make it easy to overcome heavy areas of winter roads.

The model range consists of 14 sizes from 13 to 16 inches, with speed index T (190 km/h).

PREMIORRI ViaMaggiore Z Plus is one of the new models of winter tyres with Scandinavian and asymmetric tread patterns. Specifically developed winter silica increases grip on a snowy and ice-covered road. The central row of blocks, which is responsible for road-holding ability, was "armed" with wavelike 3-D lamellae, reaching different sides of the tyre in staggered arrangement, improving grip and braking in all directions. Tread pattern has two big longitudinal grooves for the effective removal of water from the contact patch. In the central row between the blocks there are "pockets" for containing more water and snow. But big inclination of the edges between central blocks ensures quick self-cleaning properties from snow sticking to the tyre.

The model range consists of 16 sizes from 15 to 18 inches with speed index H (210 km/h) and V (240 km/h).

ROSAVA SNOWGARD is a winter tyre with pattern for studding. The three-dimensional lamellae with 3-D GRIPPING technology are located in the center of the tread and contribute to the rigidity of the tread blocks, ensuring good grip on dry road. Due to the fact that blocks do not lock during driving, the water is effectively removed from the contact patch of the tyre.

To increase safety on roads permanently covered with ice, the tyre may be studded. The tread design is specifically developed from several layers of new rubber compounds with different rigidity. Due to this, the tread remains soft and provides reliable gripping at low temperatures. The rubber layer, where the flange of the stud is located, has a more rigid structure and holds it firmly, preventing it from falling out. Effective protection from aquaplaning and slush planing is provided by wide transverse grooves with different angles. They facilitate rapid removal of water and snow from the contact patch as well.

The model range consists of 12 sizes with rim seat diameter of 13-16 inches, speed index T (190 km/h).

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