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).
Fortnightly report tracking the mileage and condition of Rapson tyres on a 20 HP W.R. car.
| Identifier | ExFiles\Box 39\1\ Scan130 | |
| Date | 22th June 1924 | |
| FORTNIGHTLY TYRE REPORTS - RAPSON TYRES ON 20 HP. W.R. CAR. DATE. | DAYS RUN. | REAR. O.S. | REAR. N.S. | FRONT. O.S. | FRONT. N.S. | REMARKS. 26.5.24 | 64 | 13,733 | 13,733 | 14,657 | 14,657 | 27.5.24 | 16 | 13,749 | 13,749 | 14,673 | 14,673 | 28.5.24 | 28 | 13,777 | 13,777 | 14,701 | 14,701 | 29.5.24 | 74 | 13,851 | 13,851 | 14,775 | 14,775 | 30.5.24 | 91 | 13,948 | 13,948 | 14,872 | 14,872 | 1.6.24 | 135| 14,183 | 14,183 | 15,007 | 15,007 | Tyres good. 2.6.24 | 91 | 14,274 | 14,274 | 15,098 | 15,098 | 3.6.24 | 44 | 14,318 | 14,318 | 15,142 | 15,142 | 4.6.24 | 28 | 14,346 | 14,346 | 15,170 | 15,170 | Tyres good. 11.6.24 | 350| 14,696 | 14,696 | 15,520 | 15,520 | 12.6.24 | 20 | 14,716 | 14,716 | 15,540 | 15,540 | 13.6.24 | 13 | 14,729 | 14,729 | 15,553 | 15,553 | 14.6.24 | 23 | 14,752 | 14,752 | 15,576 | 15,576 | Tyres good. 16.6.24 | 37 | 14,789 | 14,789 | 15,613 | 15,613 | 18.6.24 | 34 | 14,823 | 14,823 | 15,647 | 15,647 | 20.6.24 | 49 | 14,872 | 14,872 | 15,696 | 15,696 | 22.6.24 | 46 | 14,918 | 14,918 | 15,742 | 15,742 | Tyres still good. | ||