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).
Graph plotting tyre failure mileage against miles run at max speed for various tyres at Brooklands.
| Identifier | ExFiles\Box 97\3\ scan0181 | |
| Date | 27th June 1939 guessed | |
| 14 BV - TYRE FAILURES AT BROOKLANDS Y-AXIS: MILEAGE AT WHICH TYRE WAS FITTED X-AXIS: MILES RUN AT MAX SPEED BY TYRE BEFORE FAILURE DATA SERIES: AVON HEAVY TREAD N.S.R. AVON HEAVY TREAD O.S.R. AVON LIGHT TREAD N.S.F. AVON LIGHT TREAD O.S.R. AVON MEDIUM TREAD O.S.F. AVON HEAVY TREAD O.S.R. INDIA SUPER O.S.F. TEXT BOX: APPROX. RATED TYRE PRESSURES 31 LB/IN² HOT ON FRONT 33 LB/IN² " " REAR HIGH TYRE PRESSURES 40 LB/IN² HOT ON FRONT 45 LB/IN² " " REAR | ||