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).
Weight of a specific Goodrich tyre cover and tube.
| Identifier | ExFiles\Box 158\1\ scan0043 | |
| Date | 10th December 1927 | |
| Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} from ROY.{Sir Henry Royce} X.2679 ROY{Sir Henry Royce}4/MG10.12.27 Tyres The other day you were asking the weight of Goodrich Tyres. The 33 x 6.75 Cover, of which you had a set on the 8th, weighs 34½ lbs, and the Tube 5¼ lbs. ROY.{Sir Henry Royce} | ||