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).
Experimental test log for Dunlop tyres, detailing mileage and performance remarks over several days.
| Identifier | ExFiles\Box 45\1\ Scan186 | |
| Date | 23th March 1921 | |
| TEST ON DUNLOP TYRES. (EXPERIMENTAL) Date. | Tyres fitted. | Position on car. | Total mileage. F.{Mr Friese} R.{Sir Henry Royce} | Daily miles. | Route taken. | Remarks. 14.2.21. Tyres fitted & Position: WGD.4261 O front WGD.4086 N front WGD.4257 O rear WGD.4998 N rear Total mileage: F: 381, R: 381 Daily miles: 21 Route taken: Local Remarks: Test runs. 15.2.21 Tyres fitted & Position: WGD.4261 O front WGD.4086 N front WGD.4257 O rear WGD.4998 N rear Total mileage: F: 396, R: 396 Daily miles: 15 Route taken: Local Remarks: 16.2.21 Tyres fitted & Position: WGD.4261 O front WGD.4086 N front WGD.4257 O rear WGD.4998 N rear Total mileage: F: 499, R: 499 Daily miles: 103 Route taken: Derbyshire. Remarks: We notice that tyres are no better than other rubber tyres for holding on slippery lime roads 2.3.21 Tyres fitted & Position: WGD.4261 O front WGD.4086 N front WGD.4257 O rear WGD.4998 N rear Total mileage: F: 526, R: 526 Daily miles: 27 Route taken: Local Remarks: 4.3.21 Tyres fitted & Position: WGD.4261 O front WGD.4086 N front WGD.4257 O rear WGD.4998 N rear Total mileage: F: 582, R: 582 Daily miles: 56 Route taken: Local Remarks: 7.3.21 Tyres fitted & Position: WGD.4261 O front WGD.4086 N front WGD.4257 O rear WGD.4998 N rear Total mileage: F: 607, R: 607 Daily miles: 25 Route taken: Local Remarks: 8.3.21 Tyres fitted & Position: WGD.4261 O front WGD.4086 N front WGD.4257 O rear WGD.4998 N rear Total mileage: F: 630, R: 630 Daily miles: 23 Route taken: Local Remarks: Contd. | ||