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).
Riding comfort, body sizes, and tyre pressures for different chassis.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan127 | |
| Date | 20th May 1930 guessed | |
| (2) No car, either ours or that of anyone else, can give the same satisfaction if the conditions are not favourable, and owners, buyers, and coachbuilders will against our advice do things which we have proved must discount the riding comfort. Especially does this apply to putting the best passengers where the spare wheel should be. It is a ridiculous spectacle to see a very large car carrying a solitary important passenger well out at the back over the rear axle so that some odd day in the year he can carry 7 people, (the springing being suitable for the 7, and baggage,) i.e. the car too big for a year, so that it is right for a day. I am not saying we can avoid buyers having big bodies, but we can do something to point out the greater satisfaction they would get from more ideal conditions on any chassis. On the 40/50, we expect big bodies, but on the 25HP. they are better avoided, for RR. reputation, and to avoid competing with the 40/50. I have before remarked that tyre pressures (not forgetting wall stiffness) can be varied for differences in speed - i.e. something like 30 lbs. for town work, and 45 lbs. for fast country work, is what my experience demands. The 25HP. tyre pressures are often very low without any ill effect. R.{Sir Henry Royce} | ||