Doge

Yea - no idea, I was remote...
See post above this one from me.

I think I was trying to say as the difference between those two tires is 10W (measured Crr) then the one tire has 10W more resistance to deformation at that gas/air PSI and speed. It is the rate that the tire resits deformation that we couldn't see in a still example. Materials have rates they deform. A "stiff" tire resists deformation more than a supple one. At standstill both would get to their rest position. At speed I have no reason to believe both would deform at the same rate because the wheel is rolling. If they don't fully deform the same as when still.
A wheel with 100lbs @ 100PSI ~ 1SI area contact patch. That is .56inch width if it were a circle, and we know it is a bit longer/elliptical so I'll use .6in in contact with the road in a static situation. At 30mph the tire is going (if math is right (30*5280*12in/hr) / (3600sec/hr)) 528 in/sec. So start of that patch to end occurs in .6in / 528in/sec ~ .0011 sec ~ 1ms.

For a tire to fully drop the same amount in 1ms as it would in a static situation is something I don't assume, rather I assume it won't and because materials resit deformations at different rates the contact patch would be different too.

This was in the news lately at kid's school. https://www.airforcetimes.com/news/y...stops-bullets/ That is a "goo" that at slow speeds offers little resistance. At high speeds it stops a bullet.