Sidewall blistering, Truck tyre is one of the most common faults. Blistered's Truck tyre, in principle it can not be used. Otherwise, once the high-speed driving or after driving long distances, Truck tyre will be from the blistering heat at the burst, causing adverse consequences. Truck tyre sidewall bubble there are two phenomena. A phenomenon is a very significant foaming at the impact or scuff marks, to see that this is the sidewall by the impact of external forces, fracture of the internal layer of foam lines. Another phenomenon is the appearance of foam at no traces of collision or abrasion, this phenomenon there are two possibilities, one is ply sidewall of the convergence of convergence is not good at, leaving the "seams" So blistering, which is a congenital, is the quality of Truck tyre; the other is that, although there is no bubble at the appearance of traces of collision and bruised, but still a day after blistering the reason, that reason is used caused. The appearance of blisters and abrasions at no traces of collision, but through the "anatomy" will find that the line is broken.