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).
Comparative table of wheel weights, tyre weights, and ground clearance for Bentley, Buick, Graham, and Essex vehicles.
| Identifier | ExFiles\Box 126\1\ scan0204 | |
| Date | 14th March 1935 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 44707 F FD.{Frank Dodd - Bodies}1/KW.14.3.35. Comparative Wheel & Tyre Weights & Ground Clearance. | | Bentley 5.50 x 18 | Buick 6.25 x 16 | Graham 7 x 16 | Essex 6.25 x 16 | |---|---|---|---|---| | Wheel Weights | 21 lbs.9 ozs. | 21 lbs.0 oz. | 24 lbs.2 Oz. | 20 lbs.10 Oz. | | Tyre Weights | 25 " 7 " | 22 " 4 " | 26 " 2 " | 19 " 14 " | | Tube Weights | 3 " 10 " | 3 " 0 " | 3 " 2 " | 2 " 10 " | | TOTAL = | 50 " 10 " | 46 " 4 " | 53 " 6 " | 43 " 2 " | | | | | | No Body. | |---|---|---|---|---| | Ground Clearance under Front Axle | 9.0" | 7.5" | 7.75" | 9.5" | | Ground Clearance under Rear Axle | 9.0" | 7.5" | 7.55" | 9.0" | The Buick cover weight should be used as this cover is new. The Essex cover was partly worn. Hs{Lord Ernest Hives - Chair}/F.Dodd. | ||