Car slipping around bend physics problem...?

You don't need to do calculations! It is all about the driving. You start off conservatively and get the feel of the car. With the feel of the steering wheel and even the feel of your bottom in the car seat you get the feel pf the way the car is handling, the power she's got and you can even feel when the tires slip on the road. No need to do calculations, you have just got to learn the feel of it. It works much better then some numbers.