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).
Test report on Dunlop straight-sided tyres for the week ending 19th September.
| Identifier | ExFiles\Box 45\1\ Scan093 | |
| Date | 19th September 1920 | |
| TESTS ON DUNLOP STRAIGHT-SIDED TYRES FOR WEEK ENDING 19TH. SEPT. Tyres pressures - 70 lbs. rear. 65 lbs. front. Date. | Tyres fitted. | Position on car. | Total mileage. F.{Mr Friese} | Total mileage. R.{Sir Henry Royce} | Daily mileage. | Route taken. | Remarks. --- | --- | --- | --- | --- | --- | --- | --- 13.9.20 | FD.{Frank Dodd - Bodies}1648, FD.{Frank Dodd - Bodies}1999, FD.{Frank Dodd - Bodies}2460, FD.{Frank Dodd - Bodies}2159 | N front, O front, N rear, O rear | | | | Holidays. | 14.9.20 | FD.{Frank Dodd - Bodies}1648, FD.{Frank Dodd - Bodies}1999, FD.{Frank Dodd - Bodies}2460, FD.{Frank Dodd - Bodies}2159 | N front, O front, N rear, O rear | 6274, 1163 | 2481, 2522 | 631 | Eastbourne and back, during holidays. | Average speed 30 MPH Give & take roads. 15.9.20 | FD.{Frank Dodd - Bodies}1648, FD.{Frank Dodd - Bodies}1999, FD.{Frank Dodd - Bodies}2460, FD.{Frank Dodd - Bodies}2159 | N front, O front, N rear, O rear | 6375, 1264 | 2582, 2623 | 101 | To Birmingham and back. (Messrs. Dunlops) | 16.9.20 | FD.{Frank Dodd - Bodies}1648, FD.{Frank Dodd - Bodies}1999, FD.{Frank Dodd - Bodies}2460, FD.{Frank Dodd - Bodies}2159 | N front, O front, N rear, O rear | 6387, 1276 | 2594, 2635 | 12 | Local | 17.9.20 | FD.{Frank Dodd - Bodies}1649, FD.{Frank Dodd - Bodies}1999, FD.{Frank Dodd - Bodies}2460, FD.{Frank Dodd - Bodies}2159 | N front, O front, N rear, O rear | 6419, 1308 | 2626, 2667 | 32 | Local | 18.9.20 19.9.20 | FD.{Frank Dodd - Bodies}1649, FD.{Frank Dodd - Bodies}1999, FD.{Frank Dodd - Bodies}2460, FD.{Frank Dodd - Bodies}2159 | N front, O front, N rear, O rear | 6671, 1560 | 2878, 2919 | 252 | Derbyshire and district. | Average speed 30 M.P.H. Rough roads. | ||