They start to lose integrity around 200⁰C or 390⁰F… we’ll be dead long before our tires randomly soften to the poi t rhey deform.
But you’re right that friction under even slightly higher heat means they’ll wear out significantly quicker. Drivers might need to change them every 1-2 years instead of 3-5, as a hypothetical.
The melting point of rubber tires is around 371°C or 700°F
They soften much earlier, though. And there’s also the friction of moving against the road.
They start to lose integrity around 200⁰C or 390⁰F… we’ll be dead long before our tires randomly soften to the poi t rhey deform.
But you’re right that friction under even slightly higher heat means they’ll wear out significantly quicker. Drivers might need to change them every 1-2 years instead of 3-5, as a hypothetical.
We can change the rubber formulation so the Tg shifts up or down. This is actually part of the difference in winter and summer tires.