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).
Table comparing front and rear seat dimensions and maximum interior width for various models.
| Identifier | ExFiles\Box 127\5\ scan0068 | |
| Date | 7th October 1940 | |
| Bm/Wym.{G. Harold Whyman - Experimental Manager}1/SW.7.10.40. - 6 - Front seat width. 19" 19" 20" 20" 20" 20" Front seat depth. 19" 19" 17" 17" 17½" 19" Rear seat width. 36" 36" 36" 36" 40" 46" Effective. 39" 42" Super Deluxe Rear seat depth. 15" 18½" 17" 18" 18½" 21" Maximum interior 49" 48" 48" 48" 50" 53" width. At rear At rear elbows. elbows. Bm/Wym.{G. Harold Whyman - Experimental Manager} | ||