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).
Specification drawing for Dunlop tyres and well base wheels, including dimensions and pressures.
| Identifier | ExFiles\Box 53\3\ Scan014 | |
| Date | 6th January 1927 | |
| THIS TYPE OF TYRE IS NOT RECOMMENDED FOR ROLLS ROYCE CARS NEITHER THIS TYPE OF TYRE NOR TREAD IS RECOMMENDED FOR ROLLS ROYCE CARS Tyre 1: 20 LBS/SQ IN 7.30" x 34" A: 8.0" B: 8.8" C: 112.5" (UNDER NO LOAD) Tyre 2: 40 LBS/SQ IN FRONT 35 LBS/SQ IN REAR 6.75" x 33" C=CIRCUMFERENCE A: 6.55" B: 8.0" C: 110.5" Tyre 3: 30 LBS/SQ IN 6" FOR 21" RIM A: 6.10" B: 7.4" C: 106.5" DUNLOP TYRES & WELL BASE WHEELS Stamp: ROLLS-ROYCE LIMITED PRINT P 6 JAN 1927 | ||