[HELP] I can't get the custom handling right

[misterfolg]

I wanted to test if I can get vehicles from VC and III to an MTA race. My testing example is the Kuruma from GTA III. The models weren't the problem, but somehow in the race the custom handling doesn't work as it shoud. It's especially way too fast.

My handling.lua:

function handlingChange ()

        local modelId = 541

        setModelHandling(modelId, "mass", 1500.0)

        setModelHandling(modelId, "turnMass", 4000.0)

        setModelHandling(modelId, "dragCoeff", 2.0)

        setModelHandling(modelId, "centerOfMass", {0.0, 0.0, 0.15} )

        setModelHandling(modelId, "percentSubmerged", 75)

        setModelHandling(modelId, "tractionMultiplier", 0.70)

        setModelHandling(modelId, "tractionLoss", 0.80)

        setModelHandling(modelId, "tractionBias", 0.54)

        setModelHandling(modelId, "numberOfGears", 5)

        setModelHandling(modelId, "maxVelocity", 180.0)

        setModelHandling(modelId, "engineAcceleration", 17.0)

        setModelHandling(modelId, "engineInertia", 10.0)

        setModelHandling(modelId, "driveType", "fwd")

        setModelHandling(modelId, "engineType", "petrol")

        setModelHandling(modelId, "brakeDeceleration", 7.17)

        setModelHandling(modelId, "brakeBias", 0.55)

        setModelHandling(modelId, "ABS", false)

        setModelHandling(modelId, "steeringLock", 30.0)

        setModelHandling(modelId, "suspensionForceLevel", 1.6)

        setModelHandling(modelId, "suspensionDamping", 0.1)

        setModelHandling(modelId, "suspensionHighSpeedDamping", 0.0)

        setModelHandling(modelId, "suspensionUpperLimit", 0.27)

        setModelHandling(modelId, "suspensionLowerLimit", -0.13)

        setModelHandling(modelId, "suspensionFrontRearBias", 0.5)

        setModelHandling(modelId, "suspensionAntiDiveMultiplier", 0.3)

        setModelHandling(modelId, "seatOffsetDistance", 0.24)

        setModelHandling(modelId, "collisionDamageMultiplier", 0.8)

        setModelHandling(modelId, "monetary", 18000)

        setModelHandling(modelId, "modelFlags", 0x00000000)

        setModelHandling(modelId, "handlingFlags", 0x00000000)

        setModelHandling(modelId, "headLight", 1)

        setModelHandling(modelId, "tailLight", 1)

        setModelHandling(modelId, "animGroup", 0)

        outputChatBox("beep")

end

addEventHandler("onResourceStart", resourceRoot, handlingChange)

 

Is there a mistake in the values or is there something to it that I don't understand? 

If needed I may send you all the map files. 

Any help will be appreciated.