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).
Specification table detailing weights and measurements for various car models.
| Identifier | ExFiles\Box 182\M18\ img019 | |
| Date | 20th November 1930 | |
| CAR. | TOTAL WT. EMPTY. | EMPTY REAR AXLE WT. | REAR SPRINGS. | REARWHEEL DIAMETER TYRES. | BEARING DIAM. BY CLARKE. | 7 1-EX. On spare wheels. | 49.0 lbs. | 25 cwt. | 1200 | 3.4 | 3.7 10-EX. One spare wheel. | 5362 lbs. | 27 cwt. | 1300 | 3.6 | 3.62 20-KY. One spare wheel. | 53.0 lbs. | 27.25 | 1320 | 3.7 | 3.6 50-GN. | | 27.55 | 1320 | 3.63 | 3.6 25-EX. One spare wheel. | 3460 | 27.125 | 1315 | 3.75 | 3.6 HS{Lord Ernest Hives - Chair}/AW. 20.11.30. | ||