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).
Test report on high speed wobbles, examining the effect of tyre pressure with and without shock absorbers.
| Identifier | ExFiles\Box 29\1\ Scan138 | |
| Date | 15th October 1925 | |
| 16/1925 4057 HIGH SPEED WOBBLES. 98NK. STANDARD H.P TYRES. No SHOCK ABSORBERS. Tyre Press lbs/□" | PERIOD OF WOBBLE UP M.P.H. | DOWN. M.P.H. 35 | 58-64 | 64-56 40 | 60-63 | 63-58 45 | 65-68<-VIOLENT-> | 68-64 50 | 68-72<-VIOLENT-> | 72-68 55 | 72-75<-VIOLENT-> | 75-68 STANDARD R.R. SHOCK ABSORBERS. @50lbs. TYRES. 55lbs/□" | No WOBBLES. Tyres 45lbs/□" | 76-77 | 72-70. 2325 465 1860 G.H.R. R.B. 15/10/25- | ||