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 showing SMMT load and inflation data for various tyre sizes on 16-inch rims.
| Identifier | ExFiles\Box 170\3\ img179 | |
| Date | 7th December 1938 guessed | |
| SMMT LOAD & INFLATION FOR 16" RIMS 2000 1800 1600 1400 1200 BS{A J. Barnes - Assistant Manager} 9.00 8.25 7.50 7.00 6.50 6.25 6 PLY 6 PLY 6 PLY 4 PLY 4 PLY 4 PLY 1275 # 1200 # 1165 # 1090 # | ||