From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Summary of Bentley's motor racing successes in 1929.
| Identifier | ExFiles\Box 90a\5\ Scan013 | |
| Date | 22th June 1940 guessed | |
| LE MANS 1929 24 Hour's Grand Prix D'Endurance. Won for the fourth time - at record speed - and thrice consecutively - by Bentley Cars. 1st Silent Speed Six Bentley. Average speed 73.6 M.P.H. (1,765 miles) 4½-Litre Bentley 2nd, 3rd AND 4th. MONTLHERY 1929. 24 hour's International class C. record, 89.37 M.P.H. BROOKLANDS 1929. Six hour endurance race for fully equipped standard touring cars. 1st on speed, distance and formula, Silent Speed Six Bentley average speed 75.8 M.P.H. 2nd on speed and distance and 3rd on formula 4½-Litre Bentley average speed 72.9 M.P.H. DUBLIN 1929 Irish International Grand Prix. Bentleys cars 1st and 2nd on speed and distance average speed 79.8 M.P.H. and 79.M.P.H. 2nd, 3rd, 4th, 5th, 7th and 8th. on formula. Six cars started - all finished. | ||