N-t-butyl-2-benzothiazole-sulfenimide (TBSI) is a primary amine based accelerator which is finding a growing market in applications requiring long scorch safety combined with a moderately slow cure rate, providing good properties, including improved heat build up. Recently investigations have been carried out demonstrating the advantages in typical tire compounds. This paper summarizes physical and dynamic mechanical properties in various compounds. Attempts have been made to correlate these properties with the network structure.