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).
Comparing the mileage of Silent Tread tyres against triple studded tyres.
| Identifier | ExFiles\Box 45\2\ Scan104 | |
| Date | 24th October 1928 | |
| Hs.{Lord Ernest Hives - Chair} from GWH.{George W. Hancock - Head Chateauroux} X 4050 Hs{Lord Ernest Hives - Chair}/GWH{George W. Hancock - Head Chateauroux}/LG24.10.28. SILENT TREAD TYRE. 6.75" X 4050 XU4565 We find from our experience that these tyres are giving us a poor mileage - viz: 2860 miles. This is the mileage taken to bring them down to a smooth tread. Our average mileage of triple sted tyres has been 5200 for the same extent ofwear. Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} | ||