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Old 12-03-2019, 03:46 PM
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The Pneumatic Tire. DOT HS 810 561

https://www.nhtsa.gov/sites/nhtsa.do...hs-810-561.pdf 707 pages

I see that the Glass Transition temperature Tg of polydimethylsiloxane is -125C
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Old 12-04-2019, 11:47 AM
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Doug Huffman Doug Huffman is offline
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6.2 Inflation Pressure

6.2 Inflation pressure
Increasing inflation pressure stiffens the tire structure. Often, people believe that the cor* nering stiffness simply goes up with inflation pressure, but this is not true. The cornering stiffness will peak with increasing inflation pressure and then fall off as the pressure is increased further.

Increasing inflation reduces the size of the footprint, and thus the amount of tread rub*ber in contact with the road. At some point, the reduction in cornering stiffness due to a lower area of contact outweighs the increase in carcass stiffness due to increased pressure and the cornering stiffness begins to fall. A reduction of aligning torque is associated with an increase in inflation pressure because the shorter footprint also reduces pneumatic trail, section 8.2.1. Figure 8.61 is a schematic representation of the phenomena just described.

Additionally, increasing unit loading on the tread rubber reduces friction as shown by Ervin and associates [49]. Thus, if the inflation pressure is adequate to prevent buckling under the expected lateral and longitudinal forces, increasing the inflation pressure will likely lead to lower apparent friction.
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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