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).
Requesting four silent tread tyres for testing, as two are insufficient to form an adequate opinion.
| Identifier | ExFiles\Box 45\2\ Scan262 | |
| Date | 6th June 1930 | |
| S/W. Hs.{Lord Ernest Hives - Chair}..from PN.{Mr Northey} X4050 PN.{Mr Northey}10/WT6.6.30. x4050 x7820. x7960 Silent Tread Tyres. In reply to your Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/MJ.3.6.30. how are we going to form an adequate opinion as to these tyres with only two ? Can you arrange please to have four tyres here in order that the full deceleration and extent of silence may be gauged over the whole car relatively to previous effects with the ordinary treads. PN.{Mr Northey} | ||