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).
The test results and recommendations for Duo-Tread tyres.
| Identifier | ExFiles\Box 156\3\ scan0014 | |
| Date | 14th November 1933 | |
| X4379. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from Wor.{Arthur Wormald - General Works Manager} Wor{Arthur Wormald - General Works Manager}7/R.14.11.33. RE: DUO-TREAD TYRES. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/KT.6.10.33. You stated you were arranging to test a set of these tyres. Have you done so please, and can you say what are your recommendations ? Wor.{Arthur Wormald - General Works Manager} | ||