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).
Log of tests performed on Dunlop straight-sided tyres for the week ending 15th August 1920.
| Identifier | ExFiles\Box 45\1\ Scan072 | |
| Date | 15th August 1920 | |
| Tests on DUNLOP STRAIGHT-SIDED TYRES for week ending 15th. August. Tyre pressures - 70 lbs. rear. 65 lbs. front. | Date. | Tyres fitted. | Position on Car. | Total miles run. F | Total miles run. R | Daily miles. | Route taken. | Remarks. | |---|---|---|---|---|---|---|---| | 9.8.20 | FD.{Frank Dodd - Bodies}1648 FD.{Frank Dodd - Bodies}1908 FD.{Frank Dodd - Bodies}2460 FD.{Frank Dodd - Bodies}2159 | N front O front N rear O rear | 3955 3955 | 162 203 | 3 | Local runs. | | | 10.8.20 | " | " | | | | | Experimenting in Shop | | 11.8.20 | | " | | | | | " | | 12.8.20 | " | " | 3970 3970 | 177 218 | 15 | | | | 13.8.20 | " | " | 3998 3998 | 205 246 | 28 | | | | 14.8.20 15.8.20 | " | " | 4232 4232 | 439 480 | 234 | Derbyshire. | Average speed 15 to 20 M.P.H. Moderate roads. | | ||