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).
Summary of mileage data for various B.V suspension components.
| Identifier | ExFiles\Box 111\2\ scan0438 | |
| Date | 12th January 1941 | |
| 12.1.41. B.V SUSPENSION MILEAGES. ------------------ 7-B-V = 19,959 Miles 8-B-V = 67,521 " 9-B-V = 27,611 " 10-B-V = 13,183 " 11-B-V = 21,734 " 12-B-V = 30,873 " B-22-AW = 21,921 " 1-B-50 = 21,878 " 2-B-50 = 16,557 " 3-B-50 = 27,729 " 4-B-50 = 14,106 " 30-G-VII = 64,242 " 33-G-VII = 15,951 15,951 " 1-R-1 = 9,667 " Total = 372,932 Miles Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} | ||