Just one small addition to your trip from the mountians down to death valley, how much will the air pressure have changed going from 8000' above sea level to 280' below sea level? When one dives (if I remember right) one adds one atmosphere for the first 35' below sea level and one for each half of 35 after that. (could be wrong on that but lets just say it is right). Then the question becomes:
Remembering we started with 50 psi @ 75 deg. at 8000' and decend to death valley where the temp. is 125 and we are -280' at what point will the tires explode or implode. Will it be the heat or the air pressure? Will we have exploded or imploded before the tires so we could care or not? Just wondering
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