Tauranac emigrated to Australia where he and his brother Austin built racing specials under the Ralt name during the 1950s. The brothers won the New South Wales Hillclimb Championship in 1954 with the Ralt 500. It was during this period that Tauranac developed a close working relationship with Jack Brabham, which would shape both men's careers in Formula One.
In 1962, Tauranac and Brabham co-founded the Brabham constructor in England. Tauranac served as the team's chief designer, responsible for the technical development of the cars that carried the team to multiple Formula One World Championships. His engineering philosophy centred on simplicity and reliability.
Following Brabham's retirement from driving at the end of the 1970 season, Tauranac took full ownership and management of the team. In 1972 he sold the Brabham organisation to Bernie Ecclestone. After departing Brabham, Tauranac briefly assisted Frank Williams with a redesign of a Politoys Formula One chassis in 1973, and helped Trojan develop a Formula One version of their Formula 5000 car.
After a period of retirement in Australia, Tauranac returned to England and revived the Ralt name for a new range of purpose-built racing cars. The first modern Ralt was the RT1 chassis, designed to compete in Formula Three, Formula Two, and Formula Atlantic.
The RT1 proved immediately competitive. In 1975 it won the European Formula Three Championship in the hands of Australian driver Larry Perkins. In 1978 the RT1 took Jan Lammers to the European F3 title. Tauranac also designed the Theodore Racing Formula One car for the 1978 season.
For 1979 two new designs appeared: the RT2 for Formula Two and the RT3 for Formula Three. The RT3 became a cornerstone chassis in junior single-seater racing, winning five consecutive British Formula Three titles and the 1983 European F3 Championship for Pierluigi Martini.
A joint venture with Honda produced the RH6 chassis, which claimed the British Formula Three Championship in 1981, 1984, and 1985.
In October 1988, Tauranac sold the Ralt business to March Engineering for £1.25 million. By that point Ralt had become one of the most successful producers of junior-formula cars in the history of the sport.
Following the sale of Ralt, Tauranac remained active in motorsport in various capacities. He produced racing-school cars for Honda, worked on a Formula Renault design, and undertook consulting work for the Arrows Formula One team. He continued a long-standing relationship with Honda in technical advisory roles and served as the design judge at the Formula SAE Australasia competition in Melbourne.
In the 2002 Australia Day Honours, Tauranac was appointed an Officer of the Order of Australia for his service to motor racing, specifically for engineering, designing, and producing Formula One racing cars; creating opportunities for young drivers; and advancing the sport through knowledge-sharing.
Tauranac's career spanned six decades and two distinctly successful chapters: his time at Brabham, where he helped build one of Formula One's most significant constructors, and his years at Ralt, where he democratised access to high-quality junior-formula machinery for a generation of drivers who used his cars as a stepping stone to the top of the sport.
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