| Description | Date | Identifier | |
| Tyre pressure recommendations, steering stability, and wobble effects. | 6th Jan 1927 | Box 53 \ 3 Scan005 | |
| Page discussing factors affecting tyre wear, including temperature, road conditions, and tyre types. | 6th Jan 1927 | Box 53 \ 3 Scan006 | |
| Report discussing tyre wear issues and the effect of tyre inflation pressure on petrol consumption, including a performance graph. | 6th Jan 1927 | Box 53 \ 3 Scan007 | |
| Two graphs comparing rolling resistance and distance rolled from rest for two different tyre types at various inflation pressures. | 6th Jan 1927 | Box 53 \ 3 Scan008 | |
| The effects of tyre temperature and inflation pressure on rolling resistance and fuel consumption. | 6th Jan 1927 | Box 53 \ 3 Scan009 | |
| Analysis of the riding characteristics and benefits of balloon tyres at various speeds. | 6th Jan 1927 | Box 53 \ 3 Scan010 | |
| Comparison of high pressure and balloon tyre circumferences and pressures for 20 HP and 40/50 HP models. | 6th Jan 1927 | Box 53 \ 3 Scan011 | |
| Graph showing the increase in effective radius of tyres at speed, alongside a discussion on tyre noise. | 6th Jan 1927 | Box 53 \ 3 Scan012 | |
| Tyre tread characteristics, directionality, and the non-skid properties of balloon tyres as they wear. | 6th Jan 1927 | Box 53 \ 3 Scan013 | |
| Specification drawing for Dunlop tyres and well base wheels, including dimensions and pressures. | 6th Jan 1927 | Box 53 \ 3 Scan014 | |
| Tyre recommendations between high and low pressure for a high-speed chassis. | 8th Jan 1927 | Box 53 \ 3 Scan015 | |
| Receiving experimental triple stud tyres from Dunlop for testing on the 40/50 HP Chassis. | 20th Jan 1927 | Box 53 \ 3 Scan016 | |
| Testing of new, quieter Dunlop tyres with a modified triple stud tread. | 1st Feb 1927 | Box 53 \ 3 Scan017 | |
| Confirming receipt of a set of Dunlop tyres for testing and advising a switch to the standard pattern. | 2nd Feb 1927 | Box 53 \ 3 Scan018 | |
| Use of high-pressure tyres for high-speed work on the New Phantom. | 5th Feb 1927 | Box 53 \ 3 Scan019 | |
| Use of high-pressure balloon tyres for high-speed work, comparing them to straight-sided covers. | 2nd Feb 1927 | Box 53 \ 3 Scan020 | |
| Telegram regarding an assumption about the use of high-pressure tyres. | 27th Mar 1927 | Box 53 \ 3 Scan021 | |
| Covering memo attaching a self-explanatory document from Paris concerning a request for credit. | 22th Feb 1927 | Box 53 \ 3 Scan022 | |
| Sale of scrap rubber from experimental chassis and a request for an invoice. | 18th Feb 1927 | Box 53 \ 3 Scan023 | |
| Performance impact of low pressure tyres and the need for experimental testing. | 28th Feb 1927 | Box 53 \ 3 Scan024 | |
| Possibility of fitting Low Pressure (Balloon) Tyres to existing 'Phantom' Chassis. | 26th Feb 1927 | Box 53 \ 3 Scan025 | |
| Technical memo detailing tests and recommendations for balloon tyres. | 1st Mar 1927 | Box 53 \ 3 Scan026 | |
| Query regarding the suitability of fitting Balloon tyres to existing 20 HP cars. | 9th Mar 1927 | Box 53 \ 3 Scan027 | |
| Experimental testing of balloon tyres on straight-sided rims for the 20 HP model. | 10th Mar 1927 | Box 53 \ 3 Scan028 | |
| Modifications required to fit low pressure balloon tyres to a Silver Ghost chassis. | 15th Mar 1927 | Box 53 \ 3 Scan029 | |
| Modifications for a Silver Ghost chassis without front wheel brakes, detailing changes to wheels, steering lock, and shock dampers. | 15th Mar 1927 | Box 53 \ 3 Scan030 | |
| Note regarding experimental tests on wheels and tyres for a chassis. | 15th Mar 1927 | Box 53 \ 3 Scan031 | |
| Feasibility of using balloon tyres on the 20 HP model. | 15th Mar 1927 | Box 53 \ 3 Scan032 | |
| Speedometer accuracy when fitting low-pressure tyres to a Silver Ghost chassis. | 16th Mar 1927 | Box 53 \ 3 Scan033 | |
| Testing and fitting of balloon tyres on 20 HP cars. | 16th Mar 1927 | Box 53 \ 3 Scan034 | |
| Standardisation sheet for the use of 33 x 6' Balloon Tyres on 20-HP cars. | 17th Mar 1927 | Box 53 \ 3 Scan035 | |
| Query about fitting 33 x 6 balloon tyres to new and already issued 20 HP cars. | 18th Mar 1927 | Box 53 \ 3 Scan036 | |
| Parts, costs, and policy for fitting Balloon Tyres to existing 40/50 HP chassis. | 18th Mar 1927 | Box 53 \ 3 Scan037 | |
| Effect of fitting 6-inch balloon tyres on the steering of 20 HP cars. | 19th Mar 1923 | Box 53 \ 3 Scan038 | |
| Notice regarding the fitting of friction to the steering on 20 HP cars equipped with balloon tyres to prevent low speed wobbles. | 22th Mar 1927 | Box 53 \ 3 Scan039 | |
| Standardisation of Balloon Tyres on the 20 HP model. | 23th Mar 1927 | Box 53 \ 3 Scan040 | |
| Query seeking clarification on the application of previous remarks about balloon tyres for 20 HP chassis. | 25th Mar 1927 | Box 53 \ 3 Scan041 | |
| The requirements for fitting interchangeable tyres to a 20 HP chassis. | 25th Mar 1927 | Box 53 \ 3 Scan042 | |
| Outlining required modifications for luggage grids and gear ratios, with a recommendation on wheel and tyre changes. | 25th Mar 1927 | Box 53 \ 3 Scan043 | |
| Instructions for fitting interchangeable balloon tyres on existing straight-sided wire wheels for 40/50 HP chassis. | 25th Mar 1927 | Box 53 \ 3 Scan044 | |
| Modifications to tyre clearances, cross steering levers, and steering lock angles, with handwritten annotations and questions. | 25th Mar 1927 | Box 53 \ 3 Scan045 | |
| Difficulties and cost of fitting interchangeable balloon tyres on 20 HP and 40/50 HP chassis. | 1st Apr 1927 | Box 53 \ 3 Scan046 | |
| Confirming the return of Dunlop low pressure tyres after trial on a car. | 1st Apr 1927 | Box 53 \ 3 Scan047 | |
| Instructions on modifications required to fit 33 x 6 Dunlop Balloon Tyres on a 20 HP chassis. | 13th Apr 1927 | Box 53 \ 3 Scan048 | |
| The calculation of the effective circumference and diameter for a 20 HP car's balloon tyre. | 5th Apr 1927 | Box 53 \ 3 Scan049 | |
| Poor riding quality of a car due to a noisy body and high-pressure tyres, with suggestions for improvement. | 5th Apr 1927 | Box 53 \ 3 Scan050 | |
| The considerations and costs of fitting low-pressure tyres to existing cars. | 22th Apr 1927 | Box 53 \ 3 Scan051 | |
| Selection of suitable wheels and tyres for the 20 HP model. | 25th Apr 1927 | Box 53 \ 3 Scan052 | |
| Alteration to the rear tank for increased road clearance. | 27th Apr 1927 | Box 53 \ 3 Scan053 | |
| The standardization and sourcing of 6' balloon tyres for a 20 HP model. | 27th Apr 1927 | Box 53 \ 3 Scan054 | |
| Re-fitting of low-pressure tyres to company cars and associated modifications. | 28th Apr 1927 | Box 53 \ 3 Scan055 | |
| Transfer of wheels and tyres from the Chateauroux Garage and an electrical light repair. | 27th May 1927 | Box 53 \ 3 Scan056 | |
| Company's position on fitting low-pressure tyres to customer cars. | 31th May 1927 | Box 53 \ 3 Scan057 | |
| Blueprint showing the inflated section of a 31'x6.00' S.S. Balloon Buttressed Triple Block tire. | 14th Jun 1927 | Box 53 \ 3 Scan058 | |
| Standardisation of 33' x 6' tyres for the 20 HP chassis. | 21th Mar 1927 | Box 53 \ 3 Scan059 | |
| Cover memo for a standardisation sheet detailing an increase in cost. | 21th Apr 1927 | Box 53 \ 3 Scan060 | |
| The effect of tyre tread shape and wear on steering effort for 40/50 HP and 20 HP models. | 23th Jun 1927 | Box 53 \ 3 Scan061 | |
| Internal enquiry regarding the lifespan of low-pressure balloon tyres compared to high-pressure tyres. | 24th Jun 1927 | Box 53 \ 3 Scan062 | |
| Chasing a reply regarding low pressure tyres before an upcoming sales conference. | 8th Jul 1927 | Box 53 \ 3 Scan063 | |
| Internal enquiry regarding the lifespan of low-pressure balloon tyres versus high-pressure tyres. | 24th Jun 1927 | Box 53 \ 3 Scan064 | |
| Low-pressure tyres, confirming no change in opinion since a previous communication. | 8th Jul 1927 | Box 53 \ 3 Scan065 | |
| Testing, steering performance, and mileage of low-pressure tyres on Phantom experimental cars. | 1st Oct 1928 | Box 53 \ 3 Scan066 | |
| Performance and experience with low pressure tyres. | 9th Jul 1927 | Box 53 \ 3 Scan067 | |
| Advocating for 19' wheels with 6' tyres on the 20 HP model to improve its appearance. | 9th Jul 1927 | Box 53 \ 3 Scan068 | |
| Improvements to the riding qualities of 40/50 and 20 HP cars. | 9th Jul 1927 | Box 53 \ 3 Scan069 | |
| Effects of different tyre types and corresponding gear ratios for the 20 HP Chassis. | 14th Jul 1927 | Box 53 \ 3 Scan070 | |
| Inquiring about the availability of 6' tyres for 19' rims for a 20 HP vehicle. | 25th Jul 1927 | Box 53 \ 3 Scan071 | |
| Experimental 6-inch Dunlop tyres for 19-inch rims. | 1st Aug 1927 | Box 53 \ 3 Scan072 | |
| Recommendation on tyre fitment for the 40/50 HP model, advising on standard and alternative tyres and warning against high-speed wobbles. | 17th Oct 1927 | Box 53 \ 3 Scan073 | |
| Dunlop memo detailing the results of deflation tests on large tyres. | 17th Oct 1927 | Box 53 \ 3 Scan074 | |
| Tests to determine if a deflated 6.75' balloon tyre will detach from the well base rim. | 29th Oct 1927 | Box 53 \ 3 Scan075 | |
| Tyre performance and safety tests, comparing well-based and beaded-edge tyres. | 17th Oct 1927 | Box 53 \ 3 Scan076 | |
| Deflation tests conducted on large tyres. | 17th Oct 1927 | Box 53 \ 3 Scan077 | |
| Report comparing the average mileage of well base tyres against straight sided cord tyres. | 17th Nov 1927 | Box 53 \ 3 Scan078 | |
| Request for information on the running radius of high pressure and balloon tyres, to be supplied as MPH at 1000 RPM. | 23th Nov 1927 | Box 53 \ 3 Scan079 | |
| Explaining the variation in tyre rolling diameters and its effect on the effective gear ratio. | 3rd Dec 1927 | Box 53 \ 3 Scan080 | |
| Table detailing road speeds achieved with various tyre types and pressures on different car models. | 3rd Dec 1924 | Box 53 \ 3 Scan081 | |
| Comparing the noise levels of Dunlop, British Goodrich, and Goodyear tyres during road and bench tests. | 22th Dec 1927 | Box 53 \ 3 Scan082 | |
| Alarming tyre wear and high-speed wobble issues in American cars and a comparison of steering performance. | 22th Dec 1927 | Box 53 \ 3 Scan083 | |
| Depot sheet amending policy on hydraulic shock dampers for low pressure tyres on 20 HP and 40/50 HP chassis. | 18th Jan 1928 | Box 53 \ 3 Scan084 | |
| Request to arrange for 12 Dunlop spare tyres in France for an upcoming trip. | 18th Jan 1928 | Box 53 \ 3 Scan085 | |
| The difficulty in sourcing 33 x 6.75 Buttress tyres and arranging a new order. | 20th Jan 1928 | Box 53 \ 3 Scan086 | |
| Critical importance of sourcing a silent tyre, threatening to switch suppliers if necessary. | 24th Jan 1928 | Box 53 \ 3 Scan087 | |
| Tyre noise and the development of a quieter, safer tyre in collaboration with Dunlop. | 25th Jan 1928 | Box 53 \ 3 Scan088 | |
| Letter from Dunlop Rubber Co. regarding the availability of new tyre moulds and covers. | 25th Jan 1928 | Box 53 \ 3 Scan089 | |
| Letter to Dunlop chasing the delivery of anxiously awaited silent tread tyres. | 31th Jan 1928 | Box 53 \ 3 Scan090 | |
| Steering issues related to balloon tyres, recommended pressures, and suspension improvements. | 5th May 1928 | Box 53 \ 3 Scan091 | |
| Issues with steering kick, balloon tyre punctures, and front spring suspension on large car models. | 2nd Feb 1928 | Box 53 \ 3 Scan092 | |
| Technical report detailing various vehicle faults including issues with springs, air valves, tappets, and steering. | 24th May 1928 | Box 53 \ 3 Scan093 | |
| Technical memorandum discussing steering issues with balloon tyres, recommending minimum tyre pressures and suspension improvements. | 24th May 1928 | Box 53 \ 3 Scan094 | |
| The spring-loaded cross steering tube, its effectiveness, and retrospective fitment. | 25th May 1928 | Box 53 \ 3 Scan095 | |
| Letter regarding the question of tyres in India, enclosing the views of 'LK' who is now employed by the Maharaja of Patiala. | 25th May 1928 | Box 53 \ 3 Scan096 | |
| From Bombay discussing the unsuitability of balloon tyres for 'Shikar' (hunting) and general use in India. | 24th May 1928 | Box 53 \ 3 Scan097 | |
| Letter to Dunlop regarding a complaint from the Marajah of Patiala about balloon tyre performance in tropical climates. | 31th May 1928 | Box 53 \ 3 Scan098 | |
| Letter from Dunlop Rubber Co. Ltd. responding to a complaint about balloon tyre failures on a car belonging to the Marajah of Pattiala. | 1st Jun 1928 | Box 53 \ 3 Scan099 | |
| Steering difficulty and wear, escalating the matter to Messrs. Dunlops and Sir Reginald Ford. | 1st Jun 1928 | Box 53 \ 3 Scan100 | |
| Cross-section drawing of an E.W.B 5 wire wheel with a well-base rim, fitted with a Dunlop balloon tyre for a 40/50 HP Phantom. | 26th Oct 1926 | Box 53 \ 3 Scan101 | |
| Letter to the Dunlop Rubber Co. regarding communication with Sir Reginald Ford and a representative in Bombay. | 4th Jun 1928 | Box 53 \ 3 Scan102 | |
| Extract from a report detailing complaints about balloon tyres and proposing the option of fitting oversize high-pressure tyres. | 1st Jun 1928 | Box 53 \ 3 Scan103 | |
| Customer complaints regarding balloon tyres affecting steering and the recommendation to maintain 40 lbs/sq.in. pressure. | 1st Jun 1928 | Box 53 \ 3 Scan104 | |
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