Abstract
Test procedures allowing to determine coupling characteristics of passenger car’s studded tires by using a road method are described in the article. The tests were carried out on the ice field of NAMI Test Center. The test object is “Nissan X-Trail III” automobile with “Yokohama IceGUARD Stud iG55” tires. Measuring and recording equipment used during the test procedures was examined in detail. A new method of determining of rear axle slipping angle consisting in comparing the automobile course angle and azimuth of speed vector of automobile’s body above the center of rear axle is suggested. “φ - S” diagrams show the drift of studded and non-studded tires on ice. Their distinctive features are also considered.
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