Because of long mileage, every tire wears away and the tread pattern depth becomes very shallow.
因为跑了很长的里程数，每个轮胎都磨损了而且胎纹深度都变的很浅了。
2
Designing reasonable tread pattern is one of the effective methods to decrease tire noise and mostly artifice of insuring cars and vehicles safety and operation performance.
设计合理的胎面花纹是使轮胎噪音下降的有效方法之一，是确保行车安全和性能主要手段。
3
Thus the balance between the wet - skid resistance and rolling resistance oftiretread could be achieved by SSBR 2305.