[randywebb]

"how many actually drive a sustained 120mph for an hour or so?"

- But this is only part of the issue. The acceleration on the tire is one effect; but the other is heat. The tire heats up as speed rises and as G-forces rise, etc. But there is a difference in running a tire on cool concrete near the coast in the NW (could be 50 oF or 60, etc.) and on hot asphalt in the Calif. desert - where the surface temperature can be 180 oF - even in Louisiana, as a kid I used to bburn my feet on the asphalt and we sometimes could really curdle if not fully cook eggs on it. It will be hotter in the deserts.

So, in general, I would be conservative. As to this particular car in Marina, Calif. I dunno. Sounds like it is near the coast.

I sure wouldn't want a patch to fail during a burst run to 95 mph...