Vehicle tire comprising spikes in the tread

Abstract

Vehicle tire comprising spikes in the tread, especially for automobiles or vans, for use in wintery driving conditions, said vehicle tire comprising a tread in which spikes are anchored according to the following ratio: [equation], where Asp is the number of spikes in the tread, m sp is the mass of a spike in grams, U is the theoretical rolling circumference according to the E.T.R.T.O., Engineering Design Information -2014, in centimeters, where A<130. For example, U=193 cm, m=0.78 g, A sp=190.

Description

technical field [0001] The invention relates to a vehicle pneumatic tire, in particular for a passenger motor vehicle or a van, for use in winter driving conditions, having a tread in which a plurality of studs are anchored. Background technique [0002] It is known and common to equip pneumatic vehicle tires with studs in order to improve the force transmission of the tires on snow- and / or ice-covered roads in winter driving conditions. However, on uncovered (snow and ice-free) roads, the studs cause significant wear to the road surface, so until recently, for example in Finland, Sweden and Norway, the maximum number of studs per tire was limited by law . According to current legislation, free choice of the number of studs is currently permitted in these countries, wherein studded tires must pass special road wear tests in order to be approved for use. A road wear test of this type is known from DE 10 2011 056 158 A1, which relates to the "Method for determining the wear ...

AI Technical Summary

Problems solved by technology

However, the higher the impact energy, the more road damage to ice-free and snow-free roads

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