Race is in progress at the moment, but everyone's tires are bright red (softs) and it's only lap 5. I am on Take it easy and my tires are blazing hot still.
Thanks for your report David. That issue is already known and highly on the todo list.
This happens because at the moment there is an imbalance between the speed of the track and the tyre wear factor / ambient temperature.
If there is a track where the cars have a very high speed like monza then the tyres will heat up very fast.
We will change that in the future.
Tyre heat doesn't necessarily mean tyre wear though. Look at when it rains for example, the tyre wear is quite low, even when the tyres are getting towards being red.