Before the answer to this question was: "In the case of driving on ice or Packed snow it is better to use studded winter tires, if you must drive on loose snow or asphalt, preference should be given to friction tyres".
Indeed, in the case of emergency braking or sharp acceleration spike tires ensure vehicle stability and reliable grip of the wheels with compact snow or ice and tires without studs would be helpless for him to slip. At the same time nazipovna rubber will feel confident both on dry and on wet pavement, "sticking" to the surface and to overcome the road covered with fresh snow, and spikes will only worsen the grip with pure asphalt. In the case of fresh snow, and wheels with spikes in it you dug impressive pits and put the car on "paunch".
In our time of rapid technological development all of the above is no longer an undisputed axiom, as modern studded tires excellent "feel" on clean asphalt, and new models of studless friction tyres, due to the special structure of the tread with transverse sipes, literally "stick" to slippery road surface during ice.
What to choose depends on you.
In the case of a constant drive on virgin snow, the drifts and the road, it makes sense to choose the so-called "off-road" tires with clearly marked blocks in the form of cubes or rhombs up to 10 mm, with a fairly wide longitudinal and transverse grooves. Asphalt these tyres will increase fuel consumption, will make noise and increase braking distance of the car, so for regular trips on motorways and cleared city streets will be of little use.
The inhabitants of modern cities who are accustomed to dry and clean roads and drivers, in most cases, traveling on the highway cleared, suitable for high-speed winter tires with directional tread and lowered to about 6 mm the height of its elements.
Alas, most of our trails and city streets do not meet these conditions, therefore the ideal option for drivers, "having happiness" to move on it will be a classic winter tires with wide longitudinal grooves, the transverse gaps are of medium size and height of the tread elements about 8 mm. Classic winter tires can be as with the usual drawing and directed.
Interesting are the properties of automotive tires with asymmetric tread pattern. Half of the tread located on the outer side, has a classic pattern winter tyres, providing a secure grip with asphalt and the other half (inner) equipped with off-road tread pattern, realizing a reliable contact with the road in case of off-road driving.
tire Size and their number
If the technical characteristics of the car allow the use of tires of different dimensions (which is characteristic far not for all models), it makes sense to choose winter tires with a rim diameter of the tire smaller by 1 inch than in summer. This will increase the profile of the tire by increasing the height of its sidewall. Although the control of the vehicle with such tires will deteriorate, but will increase the resistance of tires to roughness of the roadway.
Apart from raising the profile of the tire, it makes sense to opt for the smaller width tires. The increase in the pressure of the wheels to the road surface at the point of contact will significantly increase the coefficient of friction of the tires.
Despite the assurances of experienced drivers that to save enough money to put winter tires only on the drive wheels of the vehicle, we insist on the need to install winter tires on all four wheels of the car. The reason is simple – different braking characteristics of the wheel (due to the differential pattern of their protectors) would violate the brake force distribution on the axis of the vehicle, resulting in the likelihood of skidding, even in a harmless situation will increase many times.
Moreover, the number of purchased winter tyres should be not four but five, considering the spare tire. In the case of limited financial resources, it makes sense to buy as a rubber for spare wheel slightly used winter tire with similar tread pattern.
Despite the high quality winter tires installed on your car, change your driving style, increasing the distance to the vehicle ahead by half and reducing movement speed by 20-30%.
Good luck to you! No nail, no wand!