Tyre pressures at Knockhill
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 Knockhill 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 | +3.0 |
| Right front | +2.5 |
| Left rear | +4.0 |
| Right rear | +3.5 |
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.
What Knockhill asks of a tyre
Knockhill runs anticlockwise, one of the few UK circuits that does, so the right side of the car takes the bigger share of load, the opposite of most drivers' habits. It is short, steep and technical: the drop to Duffus Dip compresses the car, and the hairpin asks for braking stability on a downhill approach.
Anticlockwise: the right side runs hotter, and the sheet's split reflects it
Duffus Dip's compression loads the right front
Short lap and Scottish ambients: building temperature is the morning problem
A 992 GT3 on Cup 2 R at Knockhill
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 / 21.4 front, 22.5 / 22.5 rear. A different car, tyre or morning moves every number, which is what the calculator is for.
Cadwell Park Full · Cadwell Park Woodland · Croft Circuit · Thruxton · All 45 circuits