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).
Tyre performance and discard status for chassis 9 G.III after a 10,000-mile test.
| Identifier | Morton\M2.6\ img025 | |
| Date | 26th August 1925 | |
| - 2 - Chateauroux, August 26th, 1925. Tyres discarded during second 10,000 miles test. Tyres received for chassis 9 G.III. ------------------------------------ Fitted to chassis in Derby . . . . . . . . . . 6 Received from Paris. 13.6.25 . . . . . . . . . 8 " " " 17.6.25 . . . . . . . . . 6 " " " 25.6.25 . . . . . . . . . 6 " " " 1.7.25 . . . . . . . . . 6 " " " 14.8.25 . . . . . . . . . 6 ------ 38 ------ Note: Two different tyres were both numbered 28. Tyres discarded during first 10,000 miles test. ----------------------------------------------- Tyres still in use on August 26th, 1925. No. 1 after 3,840 miles - worn to canvas. " 2 " 2,580 " - " " " " 3 " 2,373 " - " " " " 4 " 3,840 " - " " " " 5 " 1,687 " - " " " " 6 " 2,020 " - " " " " 7 " 2,770 " - " " " " 8 " 3,947 " - " " " " 9 " 609 " - burst. Unfit for further use. " 10 " 1,819 " - Worn to canvas " 12 " 1,165 " - walls badly damaged. " 13 " 1,105 " - worn to canvas. " 14 " 1,663 " - " " " " 15 " 3,640 " - " " " " 16 " 4,330 " - burst. Unfit for further use. " 18 " 1,550 " - " " " " " 27 " 430 " - cut through by horse-shoe. Tyres still in running condition at end of first 10,000 miles test. ----------------------------------------------------- No.19 after 1,070 miles. " 20 " 1,000 " " 28 " 1,700 " | ||