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).
Recommended tyre pressures from the Michelin Company.
| Identifier | ExFiles\Box 39\2\ Scan133 | |
| Date | 25th November 1921 | |
| To Hs.{Lord Ernest Hives - Chair} From BJ. BJ/Py/C/25.11.21. X3538 [Illegible signature] 11/11 Michelin Tyres. We forwarded to you on the 20th October a letter from the Michelin Company, giving the pressures per square inch which they recommend. Will you please let me know if you are issuing any instructions on this matter? BJ/Py. 10/11 | ||