Tyre pressures at Laguna Seca
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 Laguna Seca 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 | +1.5 |
| Right front | +2.0 |
| Left rear | +2.5 |
| 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.
Laguna Seca, on paper
| Location | Monterey County, United States | OSM |
| Lap as mapped | 3.601 km | MEASURED |
| Longest straight | ≈340 m | DERIVED |
| Corners | 10 | DERIVED |
OSM — the sections mappers have named on this venue's tarmac: WeatherTech Raceway Laguna Seca · The Corkscrew · Rainey Curve · Rahal Straight · Andretti Hairpin
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 Laguna Seca asks of a tyre
Laguna Seca measures 3.60 km on the map, with 10 corners counted along that line. Corners come about every 360 m, so the lap is more about carrying speed between them than surviving them back to back. Nothing on the lap is straight for longer than about 340 m, so there is no stretch where the tread gets a real chance to cool.
DERIVED — length, corner count, hands and straight measured from the mapped lap drawn above. Corner counting is a judgement (a double apex can be read as one corner or two), so treat these as this line's reading of the circuit, not a series' official figures.
Laguna Seca runs anticlockwise through dry Californian hills: the right side works hardest, the sandy soil dusts the edges of the line, and the Corkscrew drops the car blind down its famous crest. Coastal air keeps mornings cool, and grip improves markedly as the day rubbers in.
Anticlockwise load: right side temperatures dominate
The Corkscrew unloads then plants the car; pressures must handle both
Cool mornings and dusty edges: the window arrives later than the sunshine suggests
A 992 GT3 on Cup 2 R at Laguna Seca
Published hot target 30.5 / 32.0 psi at 92°C tread, on a 15°C morning, with the corner figures above: cold set 21.5 / 21.5 front, 22.6 / 22.6 rear. A different car, tyre or morning moves every number, which is what the calculator is for.
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