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).
Introducing Buttressed Tread Covers for 'Phantom' and 20-HP chassis, detailing Dunlop's stock and querying Bentley's tyre usage.
| Identifier | ExFiles\Box 45\2\ Scan032 | |
| Date | 18th May 1927 | |
| Hs{Lord Ernest Hives - Chair} c to Test Dept, c to Hs.{Lord Ernest Hives - Chair} X9050 D/BP13/B18.5.27. Re: Buttressed Tread Covers for the 'Phantom' and 20-HP chassis. We have been advised by Dunlops that their present stock of Traction Tread Balanced Covers held against our requirements, is as follows:- 33 x 6.75 for 40/50 model - 152. 5¼ x 21 size for 20-HP model - 511. In view of the intention to introduce the Buttressed Tread tyre simultaneously, we have to-day written to Dunlops requesting them to proceed with the manufacture of further supplies of the Traction Tread for the 'Phantom' in order that we may absorb quantities of the 5¼ x 21 and thereby endeavour to introduce the Buttressed Tread tyre on both chassis simultaneously. We attach copy of Sg{Arthur F. Sidgreaves - MD}19/M/17.5.27 on this subject. Can you advise us what tyres are being used on Bentleys cars and if the above proposal any way interferes with any arrangement already on hand. D/BP | ||