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).
Extract detailing tyre tests and the development of a new single-piece aluminium alloy wheel.
| Identifier | ExFiles\Box 53\2\ Scan012 | |
| Date | 9th May 1923 guessed | |
| Extract. (2) 105 Canvas tyre at 55 lbs. axle raised 1.1/8 105 Cord " " 45 " " 11/16 6" L.P " " 20 " " 1/16. My tyre in this case does not leave the ground at all. (m) You can't pull it off or damage it running a long way deflated. On my own car I've got an entirely new kind of wheel cast in one piece of Aluminium Alloy. No base plate. No bent cap. A turned, true running and perfectly balanced wheel. A beautiful wheel too. ____________ [Faint watermark text] 1904 MADE AT CRAWLEY | ||