Example 2
A comparative tread composition B0 and tread compositions that may be used in a tyre according to the invention B1 to B4 were prepared by blending in an internal mixer the tread without the crosslinking system (peroxide) followed by introduction into the external mixer of the crosslinking system, on the basis of table 3 below. The values are indicated in phr.
The moduli G′(T) at 40° C. and 200° C. of the treads B0 to B3 were measured.
The results are presented in table 4 below.
It is found that all the formulations containing a peroxide show an improvement in the heat resistance.