In the early days of bicycling he was associated with Dunlop tyres.
In 1971 Dunlop merged with Pirelli of Italy to form the world's third largest tyre company after Goodyear and Firestone.
René Dreyfus was hired by Delahaye to drive their model 145 in testing and in the competition itself, where he risked death by setting a literally blistering pace, wearing the special Dunlop tires down to the fabric, but handily overwhelming all competitors except the Bugatti team.
It was the headquarters of Dunlop Rubber, and the address at which the original pneumatic tyre patent was draughted in 1893 'for the wheels of Velocipedes and other Vehicles'.
Dreyfus was hired by Delahaye to drive their model 145 in testing and in the competition itself, where he risked death with a literally blistering pace, wearing the special Dunlop tires down to the fabric but handily overwhelming all competitors except the Bugatti team.
Goodyear Tire and Rubber Company | Firestone Tire and Rubber Company | Dunlop | Dunlop Tyres | Yokohama Rubber Company | Dunlop Rubber | Rubber City Rebels | Rubber Biscuit | Cooper Tire & Rubber Company | William Dunlop (footballer) | William Dunlop | United States Rubber Company | The Rubber Band | Rubber band | John Boyd Dunlop | Joey Dunlop | Fort Dunlop | Dunlop Sport | Rubber's Lover | Rubber Jungle Records | Red Rubber Ball | Nitrile rubber | natural rubber | Latex (rubber) | Fuchsia Dunlop | Dunlop v Higgins | Combat Rubber Raiding Craft | Carol Dunlop | William "Tiger" Dunlop | William James Dunlop |
Here he became a director of IISCO, and several other leading mercantile firms of the day, such as Dunlop, Metal Box and Brooke Bond.
In 1985, when Dunlop Rubber was taken over by BTR plc, the company acquired the automobile tire assets of Dunlop, including the right to use the Dunlop brand on automobile tires.