GRIPCALC Open calculator
DATA · THE WHOLE DATABASE, IN THE OPEN

Nothing up the sleeve

A calculator asking for your trust should show its working. This is the entire database GripCalc computes from: every published hot-pressure set it carries, every tyre temperature window, and the class baselines it falls back to when no published figure exists. Every recommendation in the app is labelled with which of these it came from, and the published rows are verified against their sources in the engine's test suite on every change.

Open does not mean ownerless: this collection is curated and verified by Sam Hayes and protected as a database under UK database right (Copyright and Rights in Databases Regulations 1997). Quote rows, cite figures, link freely with attribution to gripcalc.com; wholesale extraction or republication of the collection is what the right reserves.

1 · PUBLISHED HOT-PRESSURE SETS · 27 OFFICIAL

Carried verbatim, tested on every change

VEHICLETYREUSE HOT F/R, PSIAT, °C
Audi R8 LMS GT3 Evo2Pirelli P Zero DHErace 31.5 / 32.588
Audi R8 LMS GT4Pirelli P Zero DHDrace 29.5 / 30.588
Audi RS3 LMSHankook Ventus TD Z221race 32.0 / 32.078
BMW M2 CS RacingPirelli P Zero DHDrace 29.0 / 30.588
BMW M4 GT3Pirelli P Zero DHErace 31.5 / 32.588
BMW M4 GT4Pirelli P Zero DHDrace 29.5 / 31.088
Ferrari 296 GT3Pirelli P Zero DHErace 31.0 / 32.588
Ferrari 488 ChallengePirelli P Zero DHDrace 30.0 / 31.590
Ferrari 488 GT3 EvoPirelli P Zero DHErace 31.0 / 32.588
Ferrari 488 GT3Pirelli P Zero DHBrace 31.5 / 33.090
Ferrari 488 GT4Pirelli P Zero DHDrace 29.0 / 30.588
Ginetta G55 GT4Avon ZZRrace 29.0 / 30.090
Ginetta G55 SupercupAvon ZZRrace 29.0 / 30.090
Lamborghini Huracan GT3 Evo2Pirelli P Zero DHErace 31.5 / 33.088
Lamborghini Huracan Super Trofeo Evo2Pirelli P Zero DHDrace 30.5 / 32.090
Mazda MX-5 CupYokohama Advan A052race 28.0 / 28.085
Mazda MX-5 NDYokohama Advan A052track 28.5 / 28.582
McLaren 570S GT4Pirelli P Zero DHDrace 29.0 / 30.588
McLaren 720S GT3Pirelli P Zero DHErace 31.0 / 32.588
Mercedes-AMG GT3 EvoPirelli P Zero DHErace 31.5 / 33.088
Mercedes-AMG GT4Pirelli P Zero DHDrace 29.5 / 31.088
Porsche 718 Cayman GT4 ClubsportPirelli P Zero DHDrace 28.5 / 30.088
Porsche 718 Cayman GT4Michelin Pilot Sport Cup 2 Rtrack 29.0 / 30.588
Porsche 992 GT3 CupPirelli P Zero DHDrace 29.0 / 31.090
Porsche 992 GT3 RSMichelin Pilot Sport Cup 2 Rtrack 30.0 / 31.592
Porsche 992 GT3Michelin Pilot Sport Cup 2 Rrace 29.5 / 31.098
Porsche 992 GT3Michelin Pilot Sport Cup 2 Rtrack 30.5 / 32.092

Manufacturer and series documentation. If you hold a published figure this table lacks, send it through the app's feedback and it ships to everyone.

2 · TYRES · 67

Temperature windows by compound

TYRETYPEWINDOW
Achilles ATR Sport 2semi-slick 75–88°C
Avon ZZRslick 82–98°C
Avon ZZSslick 80–95°C
BFGoodrich g-Force Rival Ssemi-slick 75–90°C
BFGoodrich Sport Comp-2street 68–83°C
Bridgestone Potenza Racesemi-slick 80–95°C
Bridgestone Potenza RE-71RSsemi-slick 78–93°C
Bridgestone Potenza S007Astreet 70–85°C
Bridgestone Potenza Sportstreet 70–85°C
Continental ExtremeContact Sport 02street 70–85°C
Continental MaxContact MC6street 68–83°C
Continental PremiumContact 6street 68–83°C
Continental SportContact 7street 68–83°C
Dunlop Sport Maxx GTstreet 70–85°C
Dunlop Sport Maxx Race 2semi-slick 80–95°C
Falken Azenis RT615K+semi-slick 75–90°C
Falken Azenis RT660semi-slick 75–90°C
Falken FK510street 68–83°C
Federal 595RS-Prosemi-slick 75–90°C
Federal 595RS-RRsemi-slick 75–90°C
Goodyear Eagle F1 Asymmetric 5street 68–83°C
Goodyear Eagle F1 Asymmetric 6street 68–83°C
Goodyear Eagle F1 Racingslick 82–95°C
Goodyear Eagle F1 SuperSportstreet 70–85°C
Goodyear Eagle F1 SuperSport Rsemi-slick 80–95°C
Goodyear Eagle F1 SuperSport RSsemi-slick 85–100°C
GT Radial Champiro SX2semi-slick 75–90°C
GT Radial SX2semi-slick 75–90°C
Hankook Ventus R-S4semi-slick 75–90°C
Hankook Ventus RS4semi-slick 75–90°C
Hankook Ventus TD Z221slick 85–95°C
Hankook Ventus V12 evo2street 68–83°C
Kumho Ecsta PS91street 70–85°C
Kumho Ecsta V70Asemi-slick 75–90°C
Kumho Ecsta V700semi-slick 78–92°C
Kumho Ecsta V720semi-slick 75–90°C
Maxxis VR1semi-slick 75–90°C
Maxxis VS5street 68–83°C
Michelin Pilot Sport 4Sstreet 70–85°C
Michelin Pilot Sport 5street 70–85°C
Michelin Pilot Sport 5 Sstreet 70–85°C
Michelin Pilot Sport Cup 2semi-slick 80–95°C
Michelin Pilot Sport Cup 2 Connectsemi-slick 85–100°C
Michelin Pilot Sport Cup 2 Rsemi-slick 85–100°C
Michelin Pilot Super Sportstreet 70–85°C
Nankang AR-1semi-slick 75–90°C
Nankang CR-Ssemi-slick 80–95°C
Nexen N'Fera Sportstreet 68–83°C
Nexen N'Fera SUR4Gsemi-slick 75–90°C
Pirelli Cinturato P7street 65–80°C
Pirelli P Zerostreet 70–85°C
Pirelli P Zero Corsasemi-slick 75–90°C
Pirelli P Zero DHslick 82–92°C
Pirelli P Zero DHBslick 85–95°C
Pirelli P Zero DHDslick 80–90°C
Pirelli P Zero DHEslick 78–88°C
Pirelli P Zero PZ4street 70–85°C
Pirelli P Zero Trofeo Rsemi-slick 80–95°C
Toyo Proxes R888Rsemi-slick 75–90°C
Toyo Proxes RRsemi-slick 75–90°C
Uniroyal Rainsport 3street 65–80°C
Uniroyal Rainsport 5street 65–80°C
Yokohama Advan A052semi-slick 75–90°C
Yokohama Advan Neova AD09semi-slick 75–90°C
Yokohama Advan Sport V105street 70–85°C
Zestino Gredge 07RRsemi-slick 85–100°C
Zestino Gredge 07RSsemi-slick 80–95°C

The window drives the corner thermal scales in the app and the in-window scoring after a session.

3 · EVERYTHING ELSE

424 cars, 45 circuits, and honesty about the gaps

Cars carry class and weight distribution; circuits carry corner heating figures (one sheet each, in Circuits). Where no published pressure set exists, the engine estimates from the class baseline and says so with an ESTIMATED label; where it cannot defend a split it shows a band rather than invent precision. Your pyrometer readings outrank all of it.

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