     public const gravity:Number             = 9.81;
     public var wheelMass:Number             = 20;
     public var wheelRadius:Number           = 0.33;
-    public var wheelTorque:Number           = 2000;
-    public var brakeTorque:Number           = 2000;
+    public var wheelTorque:Number           = 1400;
+    public var brakeTorque:Number           = 3200;
     public var carMass:Number               = 400;
     //public var wheelInertia:Number          = 0.5 * wheelMass * wheelRadius * wheelRadius;
     public var wheelInertia:Number          = 20;
 
-    public var coefSF:Number                = 0.15;
+    public var coefSF:Number                = 0.9;
     public var coefKf:Number                = 1;
     public var airDensity:Number            = 1.29;
     public var frontalArea:Number           = 2.2; // = 1;

    public var useStaticFriction:Boolean    = true;
    public var wasStaticFriction:Boolean    = true;
    public var slipRatio:Number             = 0;

    public var airDragForce:Number          = 0;
    public var airDragTorque:Number         = 0;

                if(! sameSign(oldPosVel, wheelPosVel, false) && ! sameSign(torqueForce, wheelPosVel, false))
                    wheelPosVel = wheelAngVel = 0;

                wasStaticFriction   = true;
                forceRatio          = 1;
                responseTorque      = torqueForce * wheelRadius;
                acceleration        = acc;
                angAcceletarion     = -acc / wheelRadius;
            }
            else {
                // kinetic friction, wheel is sliding
