Motor vehicles need energy to accelerate ( overcome inertia ) , to push the air out of their way ( aerodynamic drag ) , and to overcome the friction from tires , wheels and axles ( rolling resistance ) 带发动机的车辆需要能量进行加速(克服惯性阻力) ，推开路上的空气(空气动力学拖曳力) ，并克服轮胎、车轮和车轴的摩擦力(滚动阻力) 。
The " cryogenic rubber powder " has a wide usage in various products . it can produce more durable tyre , which not only decrease dynamic heat build - up but also strengthen the flex - resistance and improve the revolution resistance . these help to prolong the lifetime of tyre 其所制成的轮胎，因改良物理性能，降低高速行使生热、提高胎侧的耐屈性、改善轮胎的滚动阻力，从而延长轮胎的寿命。
Next , through analyzing tire pressure the major influencing factor of dynamic test , the rolling resistance of tire is set up , and by using the model the dynamometer exerting power is worked out when using asm method to measure exhausts property 其次通过分析轮胎气压等主要影响动力性检测的因素，建立了汽车室内台架动力性检测的滚动阻力模型，并进一步确定了用asm法测量排放性能时底盘测功机的加载功率。
The commission is therefore insisting that by 2012 , the fleet - average emissions from new cars sold in the eu must not exceed 130g / km , with another 10g / km reduction coming from other sources , such as low rolling - resistance tyres , more efficient air - conditioning and greater use of biofuels 欧洲委员会因此坚持，到2012年，在欧洲新销售的轿车的平均排放量不得超过130克/公里，额外的10克/公里的减排将来自于其他方面，如低滚动阻力轮胎，更高效的空调和更多地使用生物燃料。
