[arcosine]

Humm, rolling resistance should be inversely related to the square root of inflation pressure.

referencing the unpublished graph of the proceeding post:

24 psi =100
28 psi = 93
32 psi = 87
36 psi = 82
40 psi = 79

100 * sqr(24/28) = 92.5
100 * sqr(24/32) = 86.6
100 * sqr(24/36) = 81.6
100 * sqr(24/40) = 77.5

Not too bad a fit for simple deflection theory. Looks like at 40 psi and above this tire is over inflated and the contact patch doesn't extend across the tread width, but is more in the center, thus the under prediction of rolling resistance due to the higher defections at the center.

How is tread wear related to contact pressure? I know that elastomer fatigue life is related inversely to the fifth power of cyclic strain, but the strain in a tire is very low and would think that abrasion is the chief component of wear.