In post #13 I provided a chart of tire profile vs. rolling force, with tire width and rim diameter as parameters (and note that I have just now corrected the chart in that post).
Below is a similar chart for tire width vs. rolling force, with tire profile and rim diameter as the parameters. This one looks a lot more uniform. Once again (as in the chart in post #13), it seems like the rolling force data for the two blue 195 data points were reversed in the source data I used. I that were changed, the blue 70 and 75 lines would not cross.
Both charts are good guides; they just show relationships among the three factors in different ways, together providing a "sensitivity analysis" for which factors have the greatest effect on efficiency.
