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).
Schedule from Dunlop Rubber Co. listing high pressure wired car tyres and their equivalents.
| Identifier | ExFiles\Box 42\1\ Scan011 | |
| Date | 30th September 1925 | |
| Copy of Schedule received from:- THE DUNLOP RUBBER CO.LTD., Fort Dunlop, Erdington, Birmingham. with their letter ref.- Chassis Makers' Division, of 30.9.25. TO:- CAR MANUFACTURERS. CONFIDENTIAL. HIGH PRESSURE WIRED TYPE CAR TYRES. NEW HIGH PRESSURE TYRE. Equivalent to:- Dunlop Cord Extra Heavy Wired type. 6" for 21" rim (O/a.dia. 33.5/8") 895 x 135 B.E. 32 x 5 S.S. 33 x 6.75 Balloon (21 x 5 Rims) Dunlop Cord Extra Heavy Wired type. 5.1/4" for 21" rim (O/a.dia. 32¾"). 820 x 120 B.E. 32 x 4½ S.S. 33 x 6.00 Balloon (21 x 4½ Rims) Dunlop Cord Extra Heavy Wired type. 4.3/4" for 21" rim (O/a.dia. 31.3/8"). 815 x 105 B.E. 765 x 105 B.E.(max.load) 32 x 4 S.S. 31 x 5.25 Balloon (21 x 4 Rims) ENCLOSURE No 864 | ||