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).
Graph comparing tyre slip angles against sideways acceleration for different tyre types.
| Identifier | ExFiles\Box 158\1\ scan0189 | |
| Date | 24th June 1938 | |
| TYRE SLIP ANGLES CHASSIS 3 B.V. 2 UP 17 GALLS PETROL WIRE STEERING ALL TYRES 6.50 X 17 X 6 PLY @ 28 LBS/□ RIMS 4.00 WIDE REAR SLIP ANGLE SIDEWAYS ACCELERATION BRITISH GOODRICH STRAIGHT RIB TREAD BRITISH GOODRICH CURVED RIB TREAD INDIA. BROKEN OUTER RIB 24-6-38 | ||