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).
Michelin Cable Tyre pressures affecting ride comfort and seeking instructions.
| Identifier | ExFiles\Box 39\2\ Scan090 | |
| Date | 11th October 1921 | |
| RJ. Copy to L.H.S.{Lord Herbert Scott - Chair} LHS{Lord Herbert Scott} M.D. RECEIVED 12 OCT LE2/H/11.10.21. MICHELIN CABLE TYRES -------------------- The Michelin Tyre fitters have orders from their Headquarters to put 85 lbs pressure into tyres when fitted. We have tried cars with this pressure and find that the riding is very hard, and it is necessary for us to reduce the pressure to 60 - 65 lbs which certainly does make a slight improvement. We understand from the Michelin Tyre fitter that this is contrary to their recommendations and they consider that running at this pressure is detrimental to the tyres. We shall be glad to have your instructions on this matter as we feel that we shall have complaints from customers regarding the harsh riding of their cars with these tyres. slp J.L.E. | ||