How to fix WheelColliders in unity 5?

Questions & Answers
1

When I play my rally project in Unity, car going to acceleration, but when I release the button on keyboard, my script set wheelcolliders.motorTorque = 0; and wheelcolliders still keeps car accelerating.

I tried to go through scripts step by step, then I was also search on Google, but I couldn’t find a problem.

kolaCollider[0].motorTorque = Tw * (torqueSplitFront / 2f);/*tw is set to 
0, when I stop pressing button */
kolaCollider[1].motorTorque = Tw * (torqueSplitFront / 2f);
kolaCollider[2].motorTorque = Tw * ((1f - torqueSplitFront) / 2f);
kolaCollider[3].motorTorque = Tw * ((1f - torqueSplitFront) / 2f);
2

setting torque to 0 wont stop it spinning… if you spin a skateboard wheel it will keep spinning…
the wheel has mass and rotational inertia…
you have to apply a braking (negative force) to slow it down.
1)positive torque = accelerating. 2) zero torque = coasting 3) negative torque = decelerating / braking