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 dimensions and weight between a U.S. Royal tyre and standard Dunlop tyres.
| Identifier | ExFiles\Box 65\2\ scan0310 | |
| Date | 8th May 1930 | |
| X 7820 To OY. From Hs{Lord Ernest Hives - Chair}/AJL. c. c. to Ry. c. c. to Da.{Bernard Day - Chassis Design} c. c. to EV.{Ivan Evernden - coachwork} Hs{Lord Ernest Hives - Chair}/AJL.2/IAJ.8.5.30. --------------------- X3895 x7820 X5820 7" x 19" U.S. ROYAL TYRE (FLAT BASE RIM). ----------------------------------------- The attached chart shows the dimensions, weight etc., as compared with our standard Dunlop tyres (P.11 and 20/25 HP). Hs{Lord Ernest Hives - Chair}/AJL. | ||