Tyre pressures at Zolder
The lap, to scale. Track outline © OpenStreetMap contributors (ODbL).
How hard a circuit works each corner of the car shows up as tread temperature, and temperature is what sets pressure. GripCalc carries corner heating figures for Zolder as a starting point: how much hotter each tyre runs over the session's base temperature, from the layout's mix of corners and load. They pre-fill the calculator when you pick the circuit, and your own pyrometer readings refine them from the first session.
| CORNER | RUNS HOTTER BY, °C |
|---|---|
| Left front | +2.5 |
| Right front | +2.0 |
| Left rear | +3.5 |
| Right rear | +3.0 |
ESTIMATED — class-based starting values over an 85°C session base, derived from this layout's type (direction, speed profile, load), and shared with circuits of similar character rather than measured here. Not gospel: enter your own pyrometer figures after a session and they take precedence.
Zolder, on paper
| Location | Zolder, Hasselt, Belgium | OSM |
| Lap as mapped | 4.001 km | MEASURED |
| Longest straight | ≈571 m | DERIVED |
OSM — the sections mappers have named on this venue's tarmac: Jacky Ickx · Bolderberg · Jochen Rindt · Eerste linkse · Sterrenwacht · Kanaalbocht · Lucien Bianchi · Gilles Villeneuve · Terlamen · Sacramentsheuvel · Kleine Chicane · Safety Car Lane
Lengths are measured from the OpenStreetMap geometry drawn above; the longest straight is derived from the same line and is approximate. Section names are the venue's, and can belong to any of its layouts.
What Zolder asks of a tyre
Zolder is an old-school Belgian circuit whose lap is punctuated by chicanes: hard braking, kerb strikes and quick direction changes, connected by fast tree-lined sections. Sidewalls and inner shoulders take the punishment, and braking stability is worth more here than peak lateral grip.
Chicane kerbs strike inner shoulders; probe inner zones
Repeated hard stops heat the fronts and build pressure through a session
The fast connecting sections cool the tread and hide the chicane spikes from averages
A 992 GT3 on Cup 2 R at Zolder
Published hot target 30.5 / 32.0 psi at 92°C tread, on a 15°C morning, with the corner figures above: cold set 21.4 / 21.5 front, 22.5 / 22.6 rear. A different car, tyre or morning moves every number, which is what the calculator is for.
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