Comparison of cross-sections and dimensions for various India Super tyres mounted on well base rims.
| Identifier | ExFiles\Box 157\6\ scan0024 | |
| Date | 18th March 1936 guessed | |
| Top Comparison: 30.28 O.D. INFLATED (5.50/18) 14.20" EFFECTIVE RADIUS 11 CWT LOAD 36 LBS PRESS. (5.50/18) 29.46 O.D. INFLATED (6.50/16) 13.60 EFFECTIVE RADIUS 11 1/2 CWT LOAD 30 LBS PRESS. (6.50/16) 15 31/32 RIM DIA. (6.50/16) 6.97 INFLATED (6.50/16) 5.90 INFLATED (5.50/18) 3.25 RIM FOR 5.50/18 4.50 RIM FOR 6.50/16 SECTION OF 6.50/16 INDIAProduction 20 HP. with 4-speed box and Front Wheel Brakes SUPER AERO CUSHION TYRE MOUNTED ON 4.50x16 WELL BASE RIM. SECTION OF 5.50/18 INDIAProduction 20 HP. with 4-speed box and Front Wheel Brakes SUPER TYRE MOUNTED ON 3.25x18 WELL BASE RIM. Bottom Comparison: 30.28 O.D. INFLATED (5.50/18) 14.20 EFFECTIVE RADIUS 11 CWT LOAD 36 LBS PRESS. (5.50/18) 29.90 O.D. INFLATED (6.00/17) 13.96 EFFECTIVE RADIUS 13 CWT LOAD 40 LBS PRESS. (6.00/17) 6.35 INFLATED (6.00/17) 5.90 INFLATED (5.50/18) 3.62 RIM. FOR. 6.00/17 3.25 RIM FOR 5.50/18 17 1/16 RIM DIA. (6.00/17) 18 1/16 RIM DIA. (5.50/18) SECTION OF 6.00/17 INDIAProduction 20 HP. with 4-speed box and Front Wheel Brakes SUPER TYRE MOUNTED ON 3.62x17 WELL BASE RIM. SECTION OF 5.50/18 INDIAProduction 20 HP. with 4-speed box and Front Wheel Brakes SUPER TYRE MOUNTED ON 3.25x18 WELL BASE RIM. | ||
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).