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).
Specification table for Avon tyres, detailing sizes, widths, rim types, maximum loads, and inflation pressures.
| Identifier | ExFiles\Box 156\3\ scan0209 | |
| Date | 16th August 1940 guessed | |
| S.M.M.T. Handwritten: Ew tyres avon 1331 Table: Size. Max: Section Width. Rim. Max. Load. Inflation Pressure. 6.00/16 6.25" 4.00 D.{John DeLooze - Company Secretary}) or 4.00 E.{Mr Elliott - Chief Engineer}) 1120 (4 ply) 30 6.25/16 6.70" 4.50 D.{John DeLooze - Company Secretary}) or 4.50 E.{Mr Elliott - Chief Engineer}) 1195 (4 ply) 30 6.50/16 6.80" 4.50 D.{John DeLooze - Company Secretary}) or 4.50 E.{Mr Elliott - Chief Engineer}) 1270 (4 ply) 30 7.00/16 7.35" 5.00 E.{Mr Elliott - Chief Engineer}) or 5.00 F.{Mr Friese}) 1410 (6 ply) 30 (6 ply) 1335 (4 ply) 28 (4 ply). 7.50/16 8.00" 5.50 E.{Mr Elliott - Chief Engineer}) or 5.50 F.{Mr Friese}) 1545 (6 ply) 30 (6 ply) 1400 (4 ply) 26 (4 ply) | ||