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).
Query regarding the effect of low tyre pressure on the figure for wheel revolutions per mile.
| Identifier | ExFiles\Box 59\2\ Scan007 | |
| Date | 1st February 1930 | |
| XC4308 Hs{Lord Ernest Hives - Chair}/AJL. from EFC. EFC2/AD3.2.30. X. 4308. SPEEDOMETERS. Have you any exact data shewing the effect of low tyre pressure on the figure for wheel revolutions per mile, usually obtained with the tyre at normal pressure? EFC. | ||