GT7 Tuning Calculator

About this app

The complete car-tuning companion for Gran Turismo 7. Enter the handful of numbers you can read off any car — weight, power, drivetrain, tyres — and copy back a full settings sheet that drops straight into the game's Fully Customisable parts. EVERY SETTING, NOT JUST SPRINGS • Suspension: body height, natural frequency in Hz, anti-roll bars, compression and expansion damping • Alignment: negative camber and toe angle, in the game's In/Out convention • Differential: initial torque, acceleration and braking sensitivity per driven axle, plus the 4WD torque split • Brakes: front/rear balance matched to your weight distribution • Downforce: front and rear targets as a share of your car's slider range • Transmission: a top-speed slider target, plus the final-drive trick explained • Ballast weight and position for PP and BoP targets TUNED TO YOUR CAR, NOT A PRESET Five drivetrain layouts (FF, FR, MR, RR, 4WD), all nine tyre grades from Comfort Hard to Racing Soft, and six build types — race, road, sport, drift, drag and dirt. Every formula scales with your car's real weight, power and weight distribution, and every output already sits inside GT7's true slider ranges. DIAL IN THE BALANCE One slider moves the whole tune between stability and rotation. Springs, anti-roll bars, toe, differential, brake bias and downforce shift together — the way a race engineer would move them, not one slider at a time. YOUR GARAGE Save a tune for every car you run. Search it, duplicate it for a new build, and reload it on the grid before each race. KNOW WHY, NOT JUST WHAT The built-in guide explains what every GT7 setting actually does, in plain language — and gives step-by-step fixes for understeer and oversteer on corner entry, mid-corner and exit. WORKS THE WAY YOU PLAY • One price, everything included — no subscription, no ads, no account • Fully offline: tune in the lobby, on the grid, anywhere • Available in 38 languages • kg or lb, HP, PS or kW, km/h or mph — match what your game displays GT7 Tuning Calculator is an independent companion app. It is not affiliated with, endorsed by, or sponsored by Polyphony Digital Inc. or Sony Interactive Entertainment. Gran Turismo is a trademark of Sony Interactive Entertainment LLC.

Thank you for the feedback — this update rebuilds how tunes are calculated. • Spring settings now come as a slider position, not a fixed Hz number. GT7 gives every car its own Natural Frequency range, and a different one front and rear, so a figure like "2.50 Hz" lands somewhere different on every car. The position is the number that actually transfers. Enter your car's limits under Natural frequency range and the app shows the Hz that position works out to. • Your car now changes the tune. Weight and power reached almost nothing in the old suspension maths, so a light hatch and a heavy GT car could come out with identical springs, dampers and camber. They no longer do. • Anti-roll bars, differential, camber, toe and damping have been rebuilt around the baselines experienced GT7 tuners use, starting from your drivetrain rather than from spring rate. Rear toe-in in particular was several times higher than it should have been, which scrubbed speed on every straight. • New track type setting. Downforce now follows the circuit — Tsukuba and Le Mans want opposite wings — instead of being guessed from the build. • The Weight and Power fields can be cleared and retyped. Deleting the value no longer snaps it back to the lowest number, and clearing a field then changing your mind restores what was there. • Copy Tune and Save are no longer hidden behind the keyboard, and the Garage has a New Tune button so you can start a car from scratch instead of editing an existing one. Your saved Garage tunes carry over.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 14, 2026 · 11:14 PM $5.99