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).
Comparison of component weights between the 25/30 HP and Wraith models.
| Identifier | ExFiles\Box 10\5\ 05-page033 | |
| Date | 15th February 1937 | |
| 658 15.2.37. COMPARISON OF 25/30 H.P. AND WRAITH WEIGHTS. 25/30 H.P. WRAITH. (Wheel & Tyre Size 6" x 19") (Wheel & Tyre Size 7" x 17") lbs. ozs. lbs. ozs. Complete Wheel ........ 64 - 68 4 " set of floorboards 7 6 19 4 Wing Stays ............ 16 - 8 14 Step Irons & Body Brkts. 27 3 25 13 Side Wheel Carrier & Support Bracket, Distance Piece and Bolt ........ 16 12 18 12 Bonnet ................ 48 - 52 4 179 5 193 3 Increase 13 14 | ||