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 Rubber Co. enquiring about the rolling circumference of a 19' rim with 6' tyres for a 20 HP car.
| Identifier | ExFiles\Box 45\2\ Scan029 | |
| Date | 28th April 1927 | |
| Expk : Dept : X4050 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG. 28th. April 1927. Messrs. The Dunlop Rubber Co., X5820 Fort Dunlop, X4050 Erdington, Birmingham. Dear Sirs, We have read with interest your remarks on the tyre life with small rims. We are however very anxious to try a set of 19" rims for the 20 HP. car fitted with 6" tyres. We should be interested to know the effective rolling circumference of such a wheel, if you have the figures by you. Yours faithfully, | ||