Heating up of tyres on the road

Thread starter vcsharp2003
Start date Jan 18, 2023
Tags

Friction force Heat Heating

Click For Summary

The heating of car tyres is primarily due to the continuous deformation of the rubber as it rolls on the road, which generates heat through hysteresis. While static friction is present, it does not produce heat; instead, the energy loss from the repeated cycles of deformation in the rubber is the main contributor to tyre heating. Rolling resistance encompasses various factors, including the deformation of the tyre and the misalignment of forces at the axle and contact patch. Discussions also highlight that rolling resistance is distinct from sliding friction, with deformation being the key mechanism for heat generation. Overall, the combination of mechanical energy conversion and viscoelastic properties of the rubber leads to increased internal energy and heat in the tyres.

Jan 19, 2023

Lnewqban

Homework Helper

Gold Member

When the asphalt is very hot, a lot of heat is transferred into the tires and the internal pressure increases.
When it is raining, the tires cooldown and the internal pressure decreases.

Strong braking and acceleration, as well as cornering, also transfer heat into the tires.

Internal friction of tube against carcass, or even inside delaminating plies of a damaged carcasse, also increases temperature of the tire.

A normal tire can become very hot (to the point of destruction) simply by underinflation combined with high static (weight) and dynamic (speed associated) loads.