| Description | Date | Identifier | |
| Letter to India Tyre & Rubber Co. Ltd. concerning the supply and testing of experimental tyres. | 22th Nov 1938 | Box 157 \ 6 scan0217 | |
| Letter from the India Tyre & Rubber Company regarding the development and supply of experimental tyres. | 24th Nov 1938 | Box 157 \ 6 scan0218 | |
| Page two of a letter from India Tyre & Rubber Company regarding a new design model. | 24th Nov 1938 | Box 157 \ 6 scan0219 | |
| Letter to Mr. Worth of India Tyre & Rubber Co. Ltd. to arrange a meeting. | 25th Nov 1938 | Box 157 \ 6 scan0220 | |
| Letter from India Tyre & Rubber Company, Ltd. to S. H. Grylls confirming a suitable meeting date. | 28th Nov 1938 | Box 157 \ 6 scan0221 | |
| Order for various experimental tyres and tubes. | 20th Dec 1938 | Box 157 \ 6 scan0222 | |
| Letter from India Tyre & Rubber Company regarding the forwarding of four 6.50/16 Super Covers with smooth shoulders. | 20th Dec 1938 | Box 157 \ 6 scan0223 | |
| Letter from a tyre supplier regarding tyre specifications and delivery schedules. | 21th Dec 1938 | Box 157 \ 6 scan0224 | |
| Page 2 of a thank you letter to W. A. Robotham from the India Tyre & Rubber Company Ltd. | 21th Dec 1938 | Box 157 \ 6 scan0225 | |
| Letter from the Experimental Department to The India Tyre & Rubber Co. Ltd. regarding figures on tyre wear and an article on wind and rolling resistance. | 22th Dec 1938 | Box 157 \ 6 scan0226 | |
| Letter from India Tyre & Rubber Co. Ltd. seeking confirmation on an order for experimental tyres. | 26th Dec 1938 | Box 157 \ 6 scan0227 | |
| Letter of thanks from a tyre company regarding figures on tyre wear, self-centring torque, and an article on wind and rolling resistance. | 28th Dec 1938 | Box 157 \ 6 scan0228 | |
| Letter to The India Tyre & Rubber Co. Ltd. clarifying the tread specification for an order of tyre covers. | 28th Dec 1938 | Box 157 \ 6 scan0229 | |
| The despatch of an inner tube section for Dunlop balloon tyres. | 1st Dec 1926 | Box 158 \ 1 scan0001 | |
| Letter to St. Helens Cable & Rubber Co. Ltd. inquiring about the supply of heavy-section inner tubes for 6.75' Dunlop well base balloon tyres. | 18th Dec 1926 | Box 158 \ 1 scan0002 | |
| Letter from a supplier regarding the specifications and supply of Everlastic Tubes. | 24th Dec 1926 | Box 158 \ 1 scan0003 | |
| Letter to St. Helens Cable & Rubber Co. about inner tube specifications and pricing. | 30th Dec 1926 | Box 158 \ 1 scan0004 | |
| Letter from a supplier discussing the weight and price of an Everlastic Tube. | 6th Jan 1927 | Box 158 \ 1 scan0005 | |
| Letter to St. Helens Rubber Co. Ltd. requesting a price for Everlastic Inner Tubes. | 7th Jan 1927 | Box 158 \ 1 scan0006 | |
| Price quotation from St Helens Cable & Rubber Co Ltd for 33 x 6.75 Balloon Everlastic Tubes. | 14th Jan 1927 | Box 158 \ 1 scan0007 | |
| Index of topics regarding car performance with a specific focus on tyres. | 14th Jan 1927 | Box 158 \ 1 scan0008 | |
| On car performance, detailing the effect of out of truth and out of balance tyres on steering. | 14th Jan 1927 | Box 158 \ 1 scan0009 | |
| Technical analysis of high-speed wheel wobble, focusing on the effects of tyre pressure and size. | 14th Jan 1927 | Box 158 \ 1 scan0010 | |
| High-speed wobbles caused by tyre tread pattern, irregular wear, and inflation pressure. | 14th Jan 1927 | Box 158 \ 1 scan0011 | |
| Tyre pressures, steering stability, and wobbles. | 14th Jan 1927 | Box 158 \ 1 scan0012 | |
| Factors affecting tyre wear, including temperature, road conditions, and tyre construction. | 14th Jan 1927 | Box 158 \ 1 scan0013 | |
| Page discussing Rapson double-tread tyres and the effect of balloon tyres on petrol consumption, including a performance graph. | 14th Jan 1927 | Box 158 \ 1 scan0014 | |
| Two graphs comparing the rolling resistance of different tyre types under machine and road test conditions. | 14th Jan 1927 | Box 158 \ 1 scan0015 | |
| Report page with a graph showing rolling resistance of a cord tyre against tyre temperature and inflation pressure. | 14th Jan 1927 | Box 158 \ 1 scan0016 | |
| Page discussing the riding characteristics, benefits, and technical details of balloon tyres. | 14th Jan 1927 | Box 158 \ 1 scan0017 | |
| Comparison of high pressure and balloon tyres for 20 HP and 40/50 HP models, including data on effective circumference. | 14th Jan 1927 | Box 158 \ 1 scan0018 | |
| Graph showing the increase in tyre radius with speed, alongside a discussion on the issue of tyre noise. | 14th Jan 1927 | Box 158 \ 1 scan0019 | |
| Continued discussion on tyre characteristics, including tread patterns, wear, and non-skid properties. | 6th Jan 1927 | Box 158 \ 1 scan0020 | |
| Blueprint comparing three types of Dunlop tyres and well base wheels with their dimensions and tread patterns. | 6th Jan 1927 | Box 158 \ 1 scan0021 | |
| Letter from St Helens Cable & Rubber Co Ltd following up on instructions for the manufacture of Everlastic Tubes. | 27th Jan 1927 | Box 158 \ 1 scan0022 | |
| Letter to St.Helens Cable Co.Ltd. rejecting a price quote as being too high. | 28th Jan 1927 | Box 158 \ 1 scan0023 | |
| Letter from a supplier discussing the price of Everlastic Tubes and a possible future cost reduction. | 12th Feb 1927 | Box 158 \ 1 scan0024 | |
| Letter from a supplier offering a 20% price reduction on Everlastic Tubes due to increased output. | 28th Mar 1927 | Box 158 \ 1 scan0025 | |
| Communication with St Helens Cable & Rubber Co.Ltd about Everlastic Tubes. | 5th Apr 1927 | Box 158 \ 1 scan0026 | |
| Letter from a supplier discussing the cost and benefits of 'Everlastic Tubes' to overcome objections. | 2nd Apr 1927 | Box 158 \ 1 scan0027 | |
| Letter from a supplier discussing the benefits and performance of fitting 'Everlastic Tubes' to vehicles. | 2nd Apr 1927 | Box 158 \ 1 scan0028 | |
| Letter to St. Helens Cable & Rubber Co. Ltd. declining their claim regarding the fitment of Everlastic Tubes. | 5th Apr 1927 | Box 158 \ 1 scan0029 | |
| The high cost of a pair of Everlastic inner tubes from St. Helens Cable & Rubber Co. Ltd for an experimental test. | 12th Apr 1927 | Box 158 \ 1 scan0030 | |
| The weight of an Everlastic Tube from the St. Helens Cable & Rubber Co. and a request to requisition two. | 3rd May 1927 | Box 158 \ 1 scan0031 | |
| Price confirmation for two Everlastic Inner Tubes before purchase. | 3rd May 1927 | Box 158 \ 1 scan0032 | |
| Letter from St Helens Cable & Rubber Co Ltd confirming an order for Everlastic Inner Tubes. | 6th May 1927 | Box 158 \ 1 scan0033 | |
| Letter to The St. Helens Rubber Co. Ltd. clarifying valve specifications for Everlastic Tubes. | 11th May 1927 | Box 158 \ 1 scan0034 | |
| Letter from St Helens Cable & Rubber Co Ltd confirming an order for low-pressure Everlastic inner tubes. | 15th May 1927 | Box 158 \ 1 scan0035 | |
| List of weights for different tyre and wheel combinations. | 10th Nov 1927 | Box 158 \ 1 scan0036 | |
| Customer complaints about tyre noise and requesting tests on alternative tyre brands. | 10th Nov 1927 | Box 158 \ 1 scan0037 | |
| Road test comparing the noise and smoothness of Michelin Comfort tyres against Dunlop tyres on a Phantom and Silver Ghost. | 27th Nov 1927 | Box 158 \ 1 scan0038 | |
| Comparison of noise generated by different types of tyre treads to determine the source of noise. | 14th Nov 1927 | Box 158 \ 1 scan0039 | |
| From Hs. to Roy requesting a set of Goodrich tyres due to dissatisfaction with Dunlop tyre noise. | 14th Nov 1927 | Box 158 \ 1 scan0040 | |
| The delivery and testing of British Goodrich tyres. | 29th Nov 1927 | Box 158 \ 1 scan0041 | |
| Tyre noise, comparing the performance of British Goodrich tyres against Dunlop tyres. | 9th Dec 1927 | Box 158 \ 1 scan0042 | |
| Weight of a specific Goodrich tyre cover and tube. | 10th Dec 1927 | Box 158 \ 1 scan0043 | |
| Tyre noise and comparing the silence of British Goodrich tyres to standard Dunlop tyres. | 21th Dec 1927 | Box 158 \ 1 scan0044 | |
| Letter to Dunlop Ltd. arranging a visit to demonstrate less noisy tyres and discuss rubber blocks for chassis construction. | 17th Dec 1927 | Box 158 \ 1 scan0045 | |
| Comparative tyre noise tests and discussions with Dunlop to produce a quieter tyre. | 22th Dec 1927 | Box 158 \ 1 scan0046 | |
| Alarming tyre wear and high-speed steering wobbles in American cars, with a comparison to Stutz and the Phantom steering. | 6th Feb 1928 | Box 158 \ 1 scan0047 | |
| S.A.E. proposals on tire simplification and the adoption of new wheel and tire sizes. | 6th Feb 1928 | Box 158 \ 1 scan0048 | |
| Discontinuance of certain wheel and tire sizes and anticipated industry changes. | 6th Feb 1928 | Box 158 \ 1 scan0049 | |
| Table of proposed new American tire and rim sizes to replace existing equipment. | 10th Mar 1928 | Box 158 \ 1 scan0050 | |
| Letter from Dunlop regarding variation in tyre wear and the testing of smaller diameter wheels in America. | 10th Mar 1928 | Box 158 \ 1 scan0051 | |
| Copy of a pamphlet from The Rubber Association of America Inc. regarding the reasons for variation in tire wear. | 10th Mar 1928 | Box 158 \ 1 scan0052 | |
| The reasons for variations in tire wear, focusing on factors like speed and temperature. | 10th Mar 1928 | Box 158 \ 1 scan0053 | |
| Technical bulletin detailing various factors that contribute to tire wear. | 1st Dec 1927 | Box 158 \ 1 scan0054 | |
| Paper discussing the causes of tire wear, such as brake adjustment and misalignment, with a detailed table comparing tire mileage in Detroit and Buffalo. | 1st Dec 1927 | Box 158 \ 1 scan0055 | |
| 'Amiens Accident' and making recommendations on driver qualifications and driving in wet conditions. | 11th Apr 1928 | Box 158 \ 1 scan0056 | |
| The dangers of skidding, tyre performance on wet loam roads, and analysis of a fatal accident involving a car hitting a tree. | 11th Apr 1928 | Box 158 \ 1 scan0057 | |
| Continued page discussing the provision of the best quality workers and materials. | 18th May 1928 | Box 158 \ 1 scan0058 | |
| Letter discussing the standardization of wheels, tires, and D.C. rims for various car models. | 18th May 1928 | Box 158 \ 1 scan0059 | |
| Letter discussing the adoption of a narrower series of D.C. rims following a letter from Mr. Paull of Dunlop, and preparing to order trial equipment. | 18th May 1928 | Box 158 \ 1 scan0060 | |
| Letter to Dunlop Tire and Rubber Corporation discussing drop centre rim designs and international standards. | 21th Feb 1928 | Box 158 \ 1 scan0061 | |
| Wheel rim specifications, comparing company standards with Ford's and arguing against certain changes. | 21th Feb 1928 | Box 158 \ 1 scan0062 | |
| Letter about new equipment enabling the removal of flaps and the adoption of new rims as a British standard. | 18th May 1928 | Box 158 \ 1 scan0063 | |
| Chart detailing standard tire and rim sizes and their equivalent replacements. | 18th May 1928 | Box 158 \ 1 scan0064 | |
| Confirming the dispatch of a set of British Goodrich tyres from London to Derby. | 23th Apr 1928 | Box 158 \ 1 scan0065 | |
| Report from the Rubber Association of America on the proposal to fit smaller wheels. | 14th Sep 1928 | Box 158 \ 1 scan0066 | |
| The causes of rapid tyre tread wear. | 1st May 1928 | Box 158 \ 1 scan0067 | |
| Memorandum, reprinted by the S. M. M. & T., concerning the causes of rapid tyre tread wear. | 11th Oct 1935 | Box 158 \ 1 scan0068 | |
| Technical bulletin detailing the various factors that influence tyre wear. | 11th Oct 1935 | Box 158 \ 1 scan0069 | |
| Guide on the causes of fast tyre wear, including inflation, wheel size, brake adjustments, alignment, and driving style. | 14th Nov 1928 | Box 158 \ 1 scan0070 | |
| Ordering 32 x 6.75' tyres and sourcing them from Goodrich as an alternative to Dunlops. | 14th Nov 1928 | Box 158 \ 1 scan0071 | |
| The testing and mileage performance of Goodrich tyres, with comparisons to Dunlop tyres. | 4th Dec 1928 | Box 158 \ 1 scan0072 | |
| Test report detailing mileage and wear conditions for Goodrich Cord Tyres. | 7th Dec 1927 | Box 158 \ 1 scan0073 | |
| The collection of five worn Goodrich tyres and two tubes for return to the manufacturer. | 1st Dec 1928 | Box 158 \ 1 scan0074 | |
| Stating the inability to test a set of Firestone tyres. | 20th Jan 1930 | Box 158 \ 1 scan0075 | |
| Testing Firestone tyres and the return of Dunlop tyres from customers' cars. | 4th Jan 1930 | Box 158 \ 1 scan0076 | |
| The trial of Goodrich tyres, focusing on their silence compared to Dunlop and MA-2 tyres. | 14th Jun 1932 | Box 158 \ 1 scan0077 | |
| Tyre testing policy, expressing a preference for Dunlop tyres over Goodrich. | 17th Jun 1932 | Box 158 \ 1 scan0078 | |
| Internal correspondence regarding the selection and standardisation of Dunlop MA-2 tyres over Goodyear. | 20th Jun 1932 | Box 158 \ 1 scan0079 | |
| Internal memorandum discussing a customer's complaint about tire noise on granite setts and potential solutions. | 1st Nov 1933 | Box 158 \ 1 scan0080 | |
| The type of tyres fitted to a car under complaint by Peter Ermen Esq. | 3rd Nov 1933 | Box 158 \ 1 scan0081 | |
| Customer's tire noise issue and its resolution by changing from Dunlop to Goodyear tires. | 6th Nov 1933 | Box 158 \ 1 scan0082 | |
| The skidding characteristics of tyres and various road surfaces. | 1st Mar 1934 | Box 158 \ 1 scan0083 | |
| Coefficient of friction for different tyre types and resistance to skidding on various wet road surfaces. | 29th Oct 1935 | Box 158 \ 1 scan0084 | |
| Concerning literature from the British Tyre & Rubber Company about their B.T.R Gilt Edges Tyres. | 29th Oct 1935 | Box 158 \ 1 scan0085 | |
| Advertisement for British Goodrich Safety Gilt-edged Tyres. | 29th Oct 1935 | Box 158 \ 1 scan0086 | |
| Advertisement for the British Goodrich 'Safety Gilt-edged' tyre. | 27th Sep 1935 | Box 158 \ 1 scan0087 | |
| | | | |
