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 and tyre weights, and ground clearances for various car models.
| Identifier | ExFiles\Box 10\5\ 05-page003 | |
| Date | 14th March 1935 | |
| Ha/VD.1/KM.14.3.35. Comparative Wheel & Tyre Weights & Ground Clearance. | | J-III Wraith 6.50 x 16 4.5 Rim. | Bentley 5.50 x 18 | Buick 6.25 x 16 | Graham 7 x 16 | Essex 6.25 x 16 | |---|---|---|---|---|---| | Wheel Weights | 23 lbs. 8 oz. | 21 lbs. 9 oz. | 21 lbs. 0 oz. | 24 lbs. 2 oz. | 20 lbs. 10 oz | | Tyre Weights | 24 * 12 * | 25 * 7 * | 22 * 4 * | 26 * 2 * | 19 * 14 * | | Tube Weights | 3 * 2 * | 3 * 10 * | 3 * 0 * | 3 * 2 * | 2 * 10 * | | TOTAL. = | 51 * 6 * | 50 * 10 * | 46 * 4 * | 53 * 6 * | 43 * 2 * | No Body | | J-III Wraith | Bentley | Buick | Graham | Essex | |---|---|---|---|---|---| | Ground Clearance under Front Axle | 7.5" | 9.0" | 7.5" | 7.75" | 9.6" | | Ground Clearance under Rear Axle | 7.5" | 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. Ha/FD.{Frank Dodd - Bodies} | ||