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).
Phenomenon of uneven tyre wear on Wraith models and recommending a solution.
| Identifier | ExFiles\Box 158\2\ scan0051 | |
| Date | 4th August 1939 | |
| 1339? By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} c. Mx.{John H Maddocks - Chief Proving Officer} Rml/R.4.8.39. UNEVEN TYRE WEAR ON WRAITHS. We have had this phenomenon on Experimental cars, but it has never appeared consistently. On the P.III we had very uneven tyre wear on one test for 7 or 8,000 miles, it then disappeared. We are inclined to think that excessive 'toe-in' will cause abnormal tyre wear. We think that the simplest way of proving the point is to work on the car belonging to the customer who has made the complaint that his tyres will not last. We recommend that in cases of excessive tyre wear, the front wheels are set parallel and the results observed. We are sure that this will give an answer in less time than if we carried out experiments on our own cars. Rm.{William Robotham - Chief Engineer} | ||