Tuning vehicle handling in FiveM
Most complaints about add-on cars — too fast, spins out, floats over bumps, explodes on contact — are handling problems. handling.meta has dozens of fields, but a small group decides how a car accelerates, grips, brakes and survives crashes. Tune those, one at a time.
Short answer: Acceleration comes mainly from fInitialDriveForce and fMass; top speed from fInitialDriveMaxFlatVel and drag (fInitialDragCoeff); grip from fTractionCurveMax, fTractionCurveMin and fTractionBiasFront; stopping from fBrakeForce and fBrakeBiasFront; body movement from the suspension and fAntiRollBarForce; crash toughness from the damage multipliers. Change one value at a time, test with SetVehicleHandlingFloat in game, then write the result into the file.
#The fields that matter most
| Area | Fields | Effect |
|---|---|---|
| Weight | fMass | Heavier = slower to accelerate, wins collisions |
| Aerodynamics | fInitialDragCoeff | Higher = lower top speed |
| Engine | fInitialDriveForce, nInitialDriveGears, fInitialDriveMaxFlatVel | Acceleration, gears, top speed |
| Drivetrain | fDriveBiasFront | 0.0 RWD, 1.0 FWD, in between AWD |
| Brakes | fBrakeForce, fBrakeBiasFront, fHandBrakeForce | Stopping and handbrake turns |
| Grip | fTractionCurveMax, fTractionCurveMin, fTractionCurveLateral, fTractionBiasFront | Cornering grip and balance |
| Suspension | fSuspensionForce, fSuspensionCompDamp, fSuspensionReboundDamp, fSuspensionRaise | Stiffness, damping, ride height |
| Stability | fAntiRollBarForce, vecCentreOfMassOffset | Body roll and tipping over |
| Damage | fCollisionDamageMult, fDeformationDamageMult, fEngineDamageMult | How much crashes hurt |
#Testing values in game
RegisterCommand('hset', function(_, args)
local veh = GetVehiclePedIsIn(PlayerPedId(), false)
if veh == 0 then return end
local field, value = args[1], tonumber(args[2])
if not field or not value then return end
print(field, GetVehicleHandlingFloat(veh, 'CHandlingData', field), '->', value)
SetVehicleHandlingFloat(veh, 'CHandlingData', field, value)
end, false)
-- /hset fInitialDriveForce 0.32#A safe tuning workflow
- Pick a vanilla car the add-on should feel like and compare values side by side.
- Change one field, test on the same road, note the result.
- Fix acceleration and top speed first, then grip, then brakes, then suspension.
- Balance against other cars in the same class — a supercar that beats everything ruins races and chases.
- Save the final values in handling.meta and restart the resource.
#Common problems
| Problem | Try |
|---|---|
| Too fast | Lower fInitialDriveMaxFlatVel or raise fInitialDragCoeff |
| Spins out constantly | Raise fTractionCurveMin, lower drive force, move fTractionBiasFront towards 0.5 |
| Rolls over easily | Lower vecCentreOfMassOffset Z, raise fAntiRollBarForce |
| Bounces over bumps | Raise damping (fSuspensionCompDamp, fSuspensionReboundDamp) |
| Wrecked by a tap | Lower fCollisionDamageMult / fEngineDamageMult |
Questions
How do I make a FiveM car faster?
fInitialDriveForce for acceleration and fInitialDriveMaxFlatVel for top speed, and check fInitialDragCoeff.How do I stop a car from spinning out?
fTractionCurveMin/Max), reduce drive force or balance fTractionBiasFront.Can I change handling without restarting?
SetVehicleHandlingFloat(vehicle, 'CHandlingData', field, value) on the client. Save the final values in handling.meta.Why does my handling.meta have no effect?
handlingName does not match handlingId in vehicles.meta, or the file is not declared as HANDLING_FILE.Ready to pick a map?
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