The tyre will be aged gradually along with the using time, no matter how soft we drive, how road condition is, how well the maintenance of the it. The age limit of the tyre such as the agricultural tyre, industrial tyre or car tyre is normally about 5 years. Once beyond 5 years, it starts to aging. The main performance of the tyre aging is surface hardening, then appear crack. The aged tyre will lose its elasticity, so it is easy to lead to the transformation of the tyre surface and exist the danger of tyre burst. So it is important to maintain the tyres of our vehicles and replace the new tyres timely.