just another thought,
All tires will heat up as some you drive (depending on amount of time driven, driving style, etc.). "Actual mileage may vary"
Example: track day in SC in January. Morning temps in the mid 30's for the 8:00 runs - EVERYBODY is slipping & sliding. But, as the day wears on, temp rises, tires get hot, and by lunch everybody is letting air out to keep the pressures right.
So, moderate to long trip at marginal temps - the tires will probably heat up enough to be fine, though maybe not a good day to probe the limits.
Short trip on a cold night to the mini-mart for more eggnog: drive carefully!