This is actually more of a Building question, not a Scripting question.
Tune it by changing the Density and Friction Properties of your wheel Parts.
I’d start with wheel Density of 1.5 - 2, and Friction of 1.5, then experiment until it handles the way you want.
Also you can control the acceleration by changing the HingeConstraints MotorMaxAccleration.
Make sure to mark @Scottifly’s post as the solution
Also, if you make a car that is longer, you increase the wheel friction even more to allow for better steering, in the future if you want a drift chassis(in this case drifting was unwanted) decrease TurnSpeed and decrease wheel friction.
Lastly, wanted to let you know, your mic audio was playing in the video not sure if you noticed
Oh, another way of tuning cars is to change the Density of the Chassis.
Heavier chassis’ give more drift and help to dampen suspension setups if you have them.
Lighter chassis’ are quicker to react to steering and rebounding off other objects/vehicles.