In 1985 he purchased a Porsche 962 from Bruce Leven and began racing in IMSA GTP.

[1] Rob and his team with its R&S Mk III won the 1997 24 Hours of Daytona with an "all star" squad of seven drivers including sports car legends James Weaver, Elliott Forbes-Robinson, and Butch Leitzinger.

The team later purchased Lola chassis and began racing in the American Le Mans Series, where it currently competes.

Dyson retired from full-time racing in 2003 but continued to drive part-time until 2007.

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