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).
Comparison table of performance metrics including weight, horsepower, speed, and wind resistance for various car models.
| Identifier | ExFiles\Box 127\1\ scan0378 | |
| Date | 15th August 1938 | |
| 1086 CAR. | TOTAL WT. 2 PASS: | ROAD WHEEL HP. AT MAX.LAP SPEED. | MAX. LAP SPEED | WEIGHT ON FRONT WHEELS TONS. | FRONTAL AREA OF CAR SQ. FT. | Windage & Tractive Res: / M.P.H.^2 or Factor 'K' | C. FRONTAL AREA OR SPECIFIC WIND RESISTANCE. | ROAD WHEEL H.P. TO LAP @ 80 M.P.H. -----------------------|-------------------|------------------------------------|----------------|------------------------------|-----------------------------|----------------------------------------------------|----------------------------------------------|-------------------------------------- P.III CLOSE-COUPLED. | 2.7 | 127.5 | 91 | 1.2 | 28.8 | .059 | .00205 | 86.5 WRAITH CLOSE COUPLED | 2.05 | 65 | 74 | .98 | 27.2 | .055 | .002 | 81 B.III | 1.84 | 90 | 87.2 | .9 | 24.06 | .047 | .00195 | 69.8 PACKARD ✓ | 1.72 | 72 | 81 | .8 | 26.4 | .047 | .00178 | 69.2 OLDSMOBILE | 1.70 | 57.5 | 77 | .8 | 25.6 | .043 | .00168 | 64.5 FORD V.8 | 1.51 | 58 | 81.6 | .75 | 23.80 | .036 | .00150 | 55 PAULIN | 1.70 | 90* | 97* | .8 | 24.5 | .033 | .00134 | 51 /R.15.8.38. * Tentative figures. | ||