Note on the evolution of Dunlop tyre tread patterns to reduce tyre groan on the Phantom III.
| Identifier | ExFiles\Box 157\1\ scan0355 | |
| Date | 1st May 1936 | |
| P III types. Pattern of Dunlop 7 x 18" tyre treads evolved to reduce tyre groan on P III 's. May 1936. Little difference noticed between types. | ||
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).