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 sheet detailing the weights of various tyres and wheels.
| Identifier | ExFiles\Box 30\5\ Scan172 | |
| Date | 20th December 1935 | |
| Hs{Lord Ernest Hives - Chair}/Box 7.D. Particulars of Tyres & Wheels 20.12.35. TABLE: SIZE | WEIGHT OF COVER LBS OZ | WEIGHT OF TUBE LBS OZ | WEIGHT OF WHEEL LBS OZ | COMPLETE LBS OZ ROW 1: 5.50x18 INDIA. SPECIAL | 27 - 8 | 3 - 12 | 22. - A (BALANCED) | 54 - 0 | Note: Definite ROW 2: 6-16 AERO CUSHION 4-PLY- | 21 - 4 | 3 - 1 | 20 - 4 (UNBALANCED) | 45 - 4 | Note: 11oz ROW 3: 6-16 AERO CUSHION 6-PLY- | 28 - 4 | 3 - 1 | 20 - 4 (UNBALANCED) | 52 - 0 | Note: 7oz HANDWRITTEN NOTE: Do not understand these weights. Should be same wheel Rm{William Robotham - Chief Engineer} 14/FD.{Frank Dodd - Bodies} | ||