How often do they need to be replaced?
For the tire life, you can refer to the following points:1. from the date of initial use (not more than 5 years of production date) tires, in addition to check and maintain the daily pressure, also suggested that the professionals at least once a year to check, to determine all the tires (including spare) whether can continue to use. Tire professional inspection can query the local Michelin tire shop.2. tyres that have been calculated for more than 10 years from the date of production, we do not recommend continued use. For safety reasons, tyres including spare tires and tires that appear to be durable or have no wear indications should be replaced.In addition, the damaged tire should also pay attention to measure whether the need to be replaced, such as the lack of gas after rolling the tire while still running in the inflated state, but due to the internal structure of the tire may have been damaged, so that timely replacement of fetal. Special need to remind is that drum wrapped tires shall not continue to use.Whether to change tires is recommended, and there is no definite connection between the number of kilometers and the time the tires are used.
If the left tire tread groove depth at or below 1.6 mm (tire longitudinal straight groove with indicator indicating the depth), the tire must be replaced, because the drainage capacity of the tire has decreased greatly, the vehicle would be more dangerous driving in wetland.
If the tire aging phenomenon (e.g. tread groove bottom or a small bead crack are numerous and matrix) on the need for timely, the tire change, no matter how long and how much the tire wear. And the influence of tire rubber aging factors and the use of tires and storage environment has a great relationship, so it is difficult to accurately judge the specific service life of a tire.
