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).
The maximum speed of 81 M.P.H. achieved by car 18-G4 under favourable conditions.
| Identifier | ExFiles\Box 5a\3\ 03-page105 | |
| Date | 18th November 1931 | |
| 75840. To R.{Sir Henry Royce} From Hs.{Lord Ernest Hives - Chair} Hs.{Lord Ernest Hives - Chair}1/MJ.18.11.31. c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} 18-G4. CAR. We have heard from C.W.Hancock that the max. speed obtained on 18-G4. car is 81 M.P.H. This was taken under favourable conditions, slightly down hill and wind at the back, but it is a very definite improvement over any 25 HP. car we have had in France. An owner usually talks of the speed of his car as the maximum which is obtained under the most favourable conditions. Hs.{Lord Ernest Hives - Chair} | ||