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).
Alarmingly short life of chamfered edge tyres compared to standard tyres.
| Identifier | ExFiles\Box 101\1\ scan0288 | |
| Date | 12th June 1936 | |
| HOTEL DE FRANCE. CHATEAUROUX. Indre. France. Handwritten notes: Top left: FD{Frank Dodd - Bodies} FWgson noted Top right: x500a To. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 22. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} V.{VIENNA} Re memo Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}28/KW.24.4.36. As you will see in to-day's report, we have discarded the rear tyres off the above car. These were the chamfered edge type sent out to us and were worn down to the cord in 3,247 miles. We did not under any conditions find them inferior to the standard Fort "90" type for road holding, but are somewhat alarmed at the short life. A pair of the standard tyres covered over 5,000 miles in England, and were not fully worn out when discarded. We were not able to carry out any truly comparative tests for silence, as road conditions here do not tend to bring out tyre noises, but the general impression is that there is no noticeable difference. ---------- [Signature] GWH{George W. Hancock - Head Chateauroux}/IMW.{Ivan M. Waller - Head of Chateauroux} | ||