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).
Letter from the Experimental Department recommending tyre pressures for the 4.25-litre Bentley.
| Identifier | ExFiles\Box 157\6\ scan0195 | |
| Date | 27th June 1938 | |
| 1336 Experimental Dept. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}6/MH.{M. Huckerby} 27th. June 1938. J.Young, Esq., India Tyre & Rubber Co. Ltd., Inchinnan, SCOTLAND. Dear Dr.Young, Thank you for your letter of 25th. June. The pressures we recommend for the 4 1/4-litre Bentley running on 5.50 x 18 tyres are 30 lbs/sq.in. all round. On the new 6.50 x 17 tyre we are recommending a cold pressure of 25 front and 28 rear. Yours sincerely, | ||