Tyre mileage report for 20-25 HP demonstration cars, detailing total mileage and estimated pattern life.
| Identifier | ExFiles\Box 157\1\ scan0361 | |
| Date | 5th May 1936 guessed | |
| -2- Total mileage of all tyres - 4,664, on demonstration work mostly in London. No wheel changes. Estimated front tyre pattern life - 17,000 miles. " rear " " - 11,500 " 3. 20-25 h.p. (Semi eliptic springs front and rear). Chassis No. CBJ. 16. Registration No. BYU. 159. 6.00/19 Fort '90' tyres with buffed shoulder studs. Pressures varying between 30-35 lbs according to type of work. Total mileage of all tyres - 5,693, on demonstration work mostly in London. No wheel changes. Estimated front tyre pattern life - 22,000 miles " rear " " - 9,500 " 4. 20-25 h.p. (Semi eliptic springs front and rear) Chassis No. GBJ. 17. Registration No. BYU. 160. 6.00/19 Fort '90' tyres with buffed shoulder studs. Pressures varying between 30-35 lbs according to type of work. Total mileage of all tyres - 4,528, on demonstration work mostly in London. No wheel changes. Estimated front tyre pattern life - 18,500 miles. " rear " " - 9,000 " | ||
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).