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).
Blueprint comparing the cross-sections of two different Avon tyre and rim combinations.
| Identifier | ExFiles\Box 156\3\ scan0254 | |
| Date | 8th February 1941 | |
| 5.50/16 AVON TYRE ON 4 1/2 K WIDE BASE RIM 4.50" 1.00" .770" 15.970" DIA. 7.50/16 AVON TYRE ON 7 M WIDE BASE RIM 7.00" 1.25" .930" 15.970" DIA. DRAWN: 8.2.41 BY: R.{Sir Henry Royce} DRUMMOND CHECKED: BY: DRG. Nᵒ P.T. 8994 | ||