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).
Internal order request for two sets of Dunlop tyres with a new improved silent tread for the 20 HP and 40/50 HP models.
| Identifier | ExFiles\Box 45\2\ Scan295 | |
| Date | 5th September 1930 | |
| Y4050. O.O. From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}9/MJ.5.9.30. X30337 Will you please order for us from the Dunlop Rubber Co., one set of five 6" tyres for 19" rims for the 20 HP., and a complete set of six 7" tyres for 20" rims for the 40/50 HP. The tread of both sets to be the new improved silent tread. Messrs. Dunlops are familiar with this tread, which consists of grooves across all three ribs of the silent tread tyres. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||