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).
Blueprint comparing the dimensions and specifications for different Dunlop tyres and well base wheels.
| Identifier | ExFiles\Box 45\1\ Scan355 | |
| Date | 28th February 1928 | |
| K5809 9504 Tyre 1: 20 LBS /sq in 7.30" x 34" Dimensions Table 1: A | 8.0" B | 8.8" C | 112.5" Tyre 2: 30 LBS /sq in 6.75" x 33" C - CIRCUMFERENCE Dimensions Table 2: 6.55" 8.0" 110.5" Tyre 3: 30 LBS /sq in 6" FOR 21" RIM. Dimensions Table 3: 6.10" 7.4" 106.5" Title: DUNLOP TYRES & WELL BASE WHEELS Stamp: ROLLS-ROYCE. LIMITED PATENT ROOM 28 FEB 1928 COPY | ||