In 1984, Bute, then known as Johnny Dumfries, was the sensation of the F3 season, scoring 14 race victories on his way to winning, and completely dominating, the
British Formula 3 Championship for Team BP (Dave Price Racing). He also finished runner-up to
Ivan Capelli in the
European Formula Three Championship that year. In 1985, he graduated to the newly created
FIA International Formula 3000 Championship, initially competing for Onyx Race Engineering before switching to Lola Motorsport. It was a disappointing season, with a sixth-place finish in Vallelunga being the highlight of the year. In , Bute made his breakthrough into F1, and raced a single season for the JPS
Team Lotus. He was a late addition to the team, apparently as a result of
Ayrton Senna not wanting
Derek Warwick as a teammate. During most of the season he was usually one of the midfield drivers, on par with the
Tyrrell drivers
Martin Brundle and
Philippe Streiff. He was replaced for by the
Japanese driver
Satoru Nakajima as part of Lotus's deal to use
Honda engines from that season onwards. In 1988, Bute scored the biggest racing victory of his career when he won the
Le Mans 24 Hours, driving a
Jaguar XJR-9 for
Tom Walkinshaw's
Silk Cut Jaguar Team alongside Dutchman
Jan Lammers and Englishman
Andy Wallace. Bute also participated in the 1-hour endurance race in the
1988 British Touring Car Championship at
Donington Park with fellow ex-F1 Briton
Guy Edwards for
Andy Rouse's Kaliber Racing team in
Ford Sierra RS500, finishing third overall and in Class A. ==Wealth==