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 wheel and tyre weights and ground clearance for Bentley, Buick, Graham, and Essex vehicles.
| Identifier | ExFiles\Box 21\6\ Scan217 | |
| Date | 14th March 1935 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 4217 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. | ||