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 detailing weight over front and rear axles, shock damper loadings, and total car weight for specific vehicle references.
| Identifier | ExFiles\Box 18\1\ Scan030 | |
| Date | 28th November 1929 guessed | |
| Ref. | Wt. over front Axle. | Shock Damper Loadings. | Wt. over rear axle. | Shock. damper loading | Total car weight. 17.G.IV. | 14 cwt 3 qrs. 21 lbs. | L.P 60. H.P. 70. | 18 cwt 0 qrs. 21 lbs. | L.P. 65 H.P. 75 | 33 cwt. 1 qr. 0 lbs. 18-EX. | 20 cwt 1 qr. 21 lbs. | 80/70 | 25 cwt 2 qrs 14 lbs. | 85/80 | 46 cwt 0 qrs. 7 lbs. 19-EX. | 20 cwt 3 qrs 14 lbs. | 80/70 | 27 cwt 0 qrs 7 lbs. | 85/80 | 47 cwt 3 qrs 21 lbs. 24-EX. | 21 cwt 0 qrs. 21 lbs. | 120/120 | 25 cwt 2 qrs 14 lbs. | H.P. 80 L.P. 70. | 46 cwt 3 qrs 7 lbs. | ||