For decades, this dictum has governed the pursuit of championships and race wins, and for many decades it was true. Dunlop developed disc brakes for Jaguar to use at Le Mans and overnight ensured that within one or two seasons everyone would have to be using disc brakes. Not long after they started filtering into production cars; the E Type came out in 1964 with a 150mph top speed and four-wheel discs. Similar scenario for bikes in the same period. BUT, are the innovations in the modern GP and MotoGP bikes for any other reason than to win races, and does the technology, with the possible exception of tyre technology, have ANY application on the street, now or later?