Tyre pressures at Anglesey National

The Anglesey National loop, drawn bold on the venue's mapped tarmac; the loop's measured length agrees with the layout's published lap length. 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 Anglesey National 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.

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.

Anglesey National, on paper

OSM — the sections mappers have named on this venue's tarmac: Corkscrew · School Corner · Club Hairpin · Church · Target · Banking · School · Rocket In · Rocket Out · Peel · Hairpin · Bus Stop

Lengths are measured from the OpenStreetMap geometry drawn above, on the loop verified against this layout’s published lap length; 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 Anglesey National asks of a tyre

Anglesey National measures 1.86 km on the map, run clockwise, with 6 corners counted along that line, 4 of them right-handers. A corner every 309 m gives the tyre a steady rhythm of work, enough to build temperature without running away with it. It is a short lap, so those corners come round again and again within a session — heat accumulates lap on lap, and going out with pressures that were right at the start is the classic way to finish a session several psi over target. With the corners weighted that way the left-hand tyres do the work and barely rest: expect them hotter and higher in pressure than the right, and read the two sides separately rather than as an axle.

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.

The National layout keeps Anglesey's clifftop sweeps with a shorter, simpler lap. The same cool coastal conditions apply, with even less time per lap spent under sustained load, so temperature building is the persistent theme, especially for road-biased tyres with higher working windows.

A 992 GT3 on Cup 2 R at Anglesey National

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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