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).
Letter discussing tyre sizes and performance calculations.
| Identifier | ExFiles\Box 90a\3\ Scan067 | |
| Date | 11th June 1935 | |
| x262 53, BERKELEY COURT, N.W.1. WELBECK 5010. June 11th/35. Dear R.M, Further to my letter re tyre sizes, Dunlops have now insisted on 5.50x19 fronts & 6.50x19 rears, which on investigation I think you will agree will suit us much better as 4,500 R.P.M. now gives us 114 M.P.H. with the 11/41 axle. The 5.50x19 fronts are exactly the same width of tread as the 5.50 x18 so the steering should not be | ||