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 showing the approximate inflated shape and dimensions of a Dunlop 8.25-15 extra low pressure tyre on a 5.50E rim.
| Identifier | ExFiles\Box 157\1\ scan0086 | |
| Date | 26th April 1933 | |
| REVISIONS 8.4" INFLATED WIDTH 14.15" EFF. RADIUS INF DIAM 30.8" 5.50 RIM WIDTH 15" RIM DIAM. WHERE GAUGES & FITS ARE INDICATED USE NEWALL STANDARD TOLERANCES. RECORD No. DUNLOP 8.25-15 EXTRA LOW PRESSURE TYRE APPROXIMATE INFLATED SHAPE ON 5.50E RIM DUNLOP PRODUCT DESIGN DEPT. DRG No. PART No. PATT No. No. REQD PART NAME MATERIAL REMARKS USED ALSO FOR DRAWN BY P H Ogden DATE 26/4/33 CHECKED BY PASSED FOR MANUFACTURE SUPERSEDES DM{D. Munro} 4980 SCALE FULL SIZE TRACED BY DATE APPROVED BY SUPERSEDED BY RECORD No. DDM 4618 | ||