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 sheet detailing tyre testing, mileage, routes, and performance remarks.
| Identifier | ExFiles\Box 45\1\ Scan192 | |
| Date | 8th April 1921 | |
| -2- Date. Tyres fitted. Position on car. Total miles. F.{Mr Friese} R.{Sir Henry Royce} Daily miles Route taken. Remarks. 6.4.21 WGD.4261 WGD.4088 WGD.4257 WGD.4998 O front N front O rear N rear 1400 1400 1400 1400 27 Local test runs. 8.4.21 WGD.4261 WGD.4088 WGD.4257 WGD.4998 O front N front O rear N rear 1665 1665 1665 1665 265 Derbyshire. Average speed 25 MPH. Roads moderate - noise from tyres more distinct. FOR ROLLS-ROYCE LTD. R.R. 29A (OP) TYS H 388. 100-5-21 G 2028 | ||