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).
Effects of increased tyre diameter on the Phantom chassis, specifically regarding the turning circle.
| Identifier | ExFiles\Box 65a\3\ scan0161 | |
| Date | 7th November 1929 | |
| +7770 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} BY28/N.7.11.29. Re: Phantôm Chassis Tyres. Referring to Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/AD.1.11.29, we do not think the increase of diameter will affect the position in regard to spare wheel carriers, but the increase on the edges of the tread will somewhat increase the turning circle which is already of course very much larger than one would like it. BY.{R.W. Bailey - Chief Engineer} BY | ||