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).
Letter to Dunlop providing feedback on the noise levels of various tyres after road testing.
| Identifier | ExFiles\Box 45\1\ Scan138 | |
| Date | 10th November 1920 | |
| X 4050 RECEIVED NOV 11 1920 HS{Lord Ernest Hives - Chair}2/LG. Messrs. The Dunlop Rubber Co.Ltd., Aston Cross, Birmingham. 10th. Nov. 1920. Dear Sirs, For the attention of Mr. W. Bond. With reference to the Dunlop Tyres with arrow tread - open ends. We have tested these tyres on the road and our first impression of these tyres was, that they are still too noisy. The sucking effect on wet roads apparently has gone. Below we give the percentage of quietness with different tyres:- Palmer Cord--------- 100% Dunlop Magnum--------85% Dunlop arrow tread---45% Dunlop arrow tread open ends----------65% Yours faithfully, | ||