Which tire manufacturer was the sole MotoGP supplier from 2009 to 2015?

Bridgestone was the sole MotoGP tire manufacturer from 2009 through the 2015 season. The Japanese company supplied the entire premier-class grid during the sport’s single-tire era.

MotoGP introduced the one-make tire rule for 2009 after several seasons of competition between Bridgestone and Michelin. Michelin chose not to bid for the new contract, leaving Bridgestone as the appointed supplier. The policy was intended to improve safety, control costs, and eliminate tire development from the contest between manufacturers.

Every MotoGP rider received the same supplier’s tires, although teams still had to select compounds and manage tire allocation across practice, qualifying, and racing. This did not make the motorcycles identical: chassis design, engine performance, electronics, setup, and riding ability remained major differentiators.

Bridgestone’s run ended after the 2015 finale. Michelin returned as MotoGP’s sole supplier in 2016, so Pirelli, Dunlop, and Michelin are incorrect for the period named in the question.