Why Tracks Don’t Share Same Tyre Pressures

Tyre pressures don’t exist in isolation. They are a reaction to the surface and layout you race on — how it’s built, how it has aged, and how it loads the tyre over laps. Two tracks with the same weather can behave completely differently, simply because the asphalt underneath and the corner combinations are different.

1. Asphalt: Age, Colour and Heat Behaviour

Close-up comparison of old and new track surface
Track age heavily affects its macrotexture and heat absorption due to change in colour.

Asphalt is not just “grippy” or “slippery.” Its behaviour depends heavily on its bitumen content and aggregate exposure, both of which change with age.

We defined asphalt for Tyre Pressure Tool 2.0 model with these parametres:

  • surface age (new vs aged)
  • surface colour (darker surfaces absorb more heat)

These factors influence how fast the track heats up, how much heat it retains, and how aggressively tyre pressures rise during a session.

2. Tyre Wear as a Track Property

Degrading slick tyre with far too big wear
Tyre wear can be huge when racing on rough asphalt or too high pressures.

Tyre wear isn’t only about compound choice — it reflects how much mechanical work the track demands from the tyre.

Rougher surfaces force the tyre to flex more, generate more heat, and wear faster. Smoother surfaces do the opposite, often requiring different higher starting pressures to stay in the operating window.

In Tyre Pressure Tool 2.0, tyre wear is the simplest way to reflect track roughness. It can be visually assessed and compared with other circuits.

A global track database is displayed in a computer screen
We’re building a track database inside the Tyre Pressure Tool to tailor the tool exactly to our user’s needs.

Real Track Database

We started a growing Track Database of over 50 karting circuits, each mapped with specific surface characteristics. This database expanded by 15 more trakcs already on Day 1. Users can submit their tracks, allowing drivers to contribute local knowledge from around the world, improve the tool and make it more convenient to use.

Want to submit your home track? Open the tool and click “Add New” next to our Track Search.

If a track isn’t listed, drivers can still model its surface parameters manually — ensuring the calculation remains grounded in physics.

Track search

Your track defines
your tyre pressures

Tyre Pressure Tool 2.0 models real karting circuits using asphalt age, colour, tyre wear and corner load — so pressures are built around how the track actually works the tyre.

Launch Tool

50+ tracks mapped. Add yours today.

3. Long Corners and Sustained Load

Long, fast corners place sustained lateral load on the tyre, increasing carcass flex, heat build-up and pressure rise — even if overall lap speed isn’t extreme. This can be a tyre-killer across a long race, especially with more agressive style and wrong tyre pressure.

Your track has long fast corners like this? A yes/no toggle allows our TPT to account for continuous mechanical strain that short, stop-and-go tracks don’t produce.

A kart driving fast through a long corner
Long corners generate extra mechanical load on the tyres.

Conclusion

Tracks define how tyres behave long before weather or setup come into play. Asphalt composition, surface age, roughness and corner characteristics all shape how pressures build and how stable they remain over a run.

That’s why Tyre Pressure Tool 2.0 treats tracks as first-class inputs – they make the tool personal to your needs. We’ve worked out what matters, now you can help us grow a global track base with surface parameters that reflect how karting circuits actually work tyres in the real world.

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