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).
Comparison of weights for Avon and Dunlop tyres of different sizes.
| Identifier | ExFiles\Box 158\2\ scan0061 | |
| Date | 27th January 1941 guessed | |
| TYRES - COMPARATIVE WEIGHTS. [Handwritten in red] Tyres/fun [Handwritten] 1339 Avon. 7.50 x 16. "4.Stud" 4 ply. 40 lbs. Dunlop. " " "Fort" - 40 lbs. Avon. 7.00 x 16 "4.Stud" 4 ply. 32 1/2 lbs. Dunlop. " " Fort. - 36 lbs. Note: For a correct comparison Dunlop E.L.P. tyres should be used for this check but we have no stock. | ||