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So you must have wondered what Checo does to make his tyres go 15 laps longer than everyone else. Or what the drivers are doing when their engineers ask them to ‘extend a stint’.
It’s a science of minimising wear on the tyre, whilst keeping the lap times up as much as possible. This is counter to how it normally works - the faster you go and the harder you push - the faster your tyres let go. So that’s where driver skill comes in.
I’m going to break down exactly how the drivers are braking, turning and accelerating to keep the tyres alive for longer. Let's go.
Firstly, to understand how the drivers save tyres - we need to chat about how they wear. There are a number of ways, that all depend on the tyre and the conditions.
The simplest way is in simple-wear - running out of rubber. This happens fastest with softer compounds or on harsher surfaces. And that makes sense when you think about how tyres create grip.
Even in smooth racing surfaces, there are small peaks and troughs in the surface - maybe only a couple of millimetres wide. And rubber squishes into these gaps.
These bits of rubber then grip the track and allow the tyre to produce traction forces - but as the rubber does this over and over - some of the rubber breaks off. Now, if the tyre is at a good operating temperature this happens fairly steadily, and in a predictable way.
And on a side note - that is why softer tyres create more grip (because the rubber can get further into the surface) but wear faster (becuse the material itself is weaker) so more rubber is torn from the surface.
So to reduce wear there are a couple of things you can do - but we will get to that.
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7 сен 2024
