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最新的研究表明,通常法定的最小胎面花纹沟深度为1/16英寸(1.6mm)的轿车轮胎在公路的湿路面上行驶时的牵引性能不理想。当花纹沟深度磨耗到18/英寸(3.2mm)时,即使车辆是在不太湿的路况下行驶,或者车轮在很湿路况下发生滑水临界现象而车辆尚未失去操纵能力时,轮胎与路面的摩擦性能也会发生严重的下降。目前这一关于道路安全的理论尚未获得足够的证据来证实。
Recent studies have shown that the typical quasi-minimum tread groove depth of 1/16 inch (1.6mm) car tires on the wet road surface when the traction performance is not satisfactory. When the groove is worn to a depth of 18 inches (3.2 mm), even if the vehicle is running under less wet conditions or when the wheels are in a very wet condition and the vehicle has not lost control of the handling capacity, the tire and the road surface The friction performance will also have a serious decline. The current theory of road safety has yet to receive sufficient evidence to substantiate it.