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).
Specifications and tread pattern for a Dunlop '90' (Fort) tyre.
| Identifier | ExFiles\Box 157\6\ scan0134 | |
| Date | 6th January 1937 guessed | |
| DUNLOP "90" (FORT) 6.00/17.(4.00-17 RIM) TOTAL AREA = 25.49 SQ. INS. ROAD CONTACT. = 18.96 " " GROOVE = 6.53 " " SKID LINE LENGTH = 62.16 INS. LOAD 13CWTS AT 40LBS/IN² PRESSURE. 16 | ||