 Born in Manosque, Alpes-de-Haute-Provence, Bayle won the FIM 125cc motocross world championship in 1988, and the 250cc motocross world championship a year later.He competed in the United States in 1991, becoming the first rider to win all three major AMA motocross championships in the same year (Supercross, 250cc and 500cc).Having won many of the major motocross championships, Bayle became one of the few riders to switch motorcycling disciplines, going from dirt track motocross events to pavement based road race events.