Quote:
Originally Posted by BrianL
I'm far more concerned with the outside temps as the stock run flats don't do very well when the temps are in the 30's. And if the rain turns into snow, it's game over for these tires.
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Agree with Brian. If temps are borderline I keep it in Tour and drive conservatively. If it is raining, chances are that the rainwater temp is lower than that of the ambient air, and will cool your tires a bit. It is not ALWAYS colder than the air, but that is the safer guess.