How did winter tires appear?

Winter tires first appeared in the early 1960s. At that time, they differed from summer tires only in the presence of spikes. Thanks to this, they were able to keep the vehicle safely on icy surfaces and in the snow. However, when driving on wet asphalt, they showed poor results. By the way, the spikes were significantly longer then than those of modern tires.The disadvantages include the summer composition of rubber, which was not suitable for cold weather.Gradually, manufacturers worked on the composition of the rubber compound to provide the necessary characteristics for traction in winter. At the same time, tire developers began to reduce the length of the spikes. As a result, the adhesion to the icing coating is somewhat reduced. Winter "cylinders" with a certain soot content began to appear. Aquaplaning studies have also been conducted.In the mid-1970s, a number of European countries banned studded tires at the legislative level. This was explained by the fact that spikes damage asphalt and these defects increase the risk of aquaplaning. This is quite a big problem for the European climate, since the surface usually consists of snow cover, ice, as well as wet and dry asphalt pavement. In Scandinavia, studded tires were not banned, and tire manufacturers continued to develop in this direction. Therefore, studded rubber is still being produced and improved.After the ban on studded tires in central Europe, rather unusual solutions began to be offered. For example, models with lengths of steel wire in the tread were produced. In addition, solutions with the effect of a vacuum "suction cup" were developed. Due to this, the rubber seemed to stick to the icy surface, and the grip improved. However, the real solution for winter tires without spikes was proposed when a mixture based on silicic acid began to be used. It was named silica.The use of this substance has allowed us to achieve excellent results for all categories of winter coefficients. Increased resistance to negative temperatures. In the 1980s, lamella technology appeared. She laid the foundation for a whole line of development of winter tires.Experts say that any winter rubber is a compromise solution between traction, as well as ride comfort and rolling resistance. Developers are always forced to look for a combination of these properties in an optimal way. At the turn of the millennium, winter tires with a speed index of up to 240 kilometers per hour were offered, which was a real breakthrough. Watch USA online porn https://mat6tube.com teens, milfs, matures!