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 log for Dunlop straight-sided tyres, noting mileage, routes, and vehicle status.
| Identifier | ExFiles\Box 45\1\ Scan135 | |
| Date | 28th October 1920 | |
| TESTS ON DUNLOP STRAIGHT-SIDED TYRES. Tyre pressures - 70 lbs. rear. 65 lbs. front. Date. | Tyres fitted. | Position on car. | Total mileage. F.{Mr Friese} R.{Sir Henry Royce} | Daily miles. | Route taken. | Remarks. 25.10.20 | FD.{Frank Dodd - Bodies}4529, FD.{Frank Dodd - Bodies}4536, FD.{Frank Dodd - Bodies}4522, FD.{Frank Dodd - Bodies}4509 | N front, O front, N rear, O rear | F: 883, 883, R: 883, 883 | | | Car at Coachbuilders. 26.10.20, 27.10.20 | | | | | | Tyres not run. 28.10.20 | FD.{Frank Dodd - Bodies}4529, FD.{Frank Dodd - Bodies}4536, FD.{Frank Dodd - Bodies}4522, FD.{Frank Dodd - Bodies}4509 | N front, O front, N rear, O rear | F: 981, 981, R: 981, 981 | 98 | Birmingham and back. | Tyres taken off 4.EX Car (Saloon body) fitted to 2.EX Car (Cabriolet body) | | | | | | Tyres not run after 28th.Oct. | ||