Hi!
I’ve been following this tutorial in an attempt to make a well driving kart:
One thing I noticed is that when you turn, the car follows a bit later. I started thinking and realised that was because the car’s right wheels don’t slow down when you turn right, so I did some tests:
https://gyazo.com/e99896e7deaad17998cf3d148cb04c41
On the gif, I have two situations. When I turn left, the speed of the wheels doesn’t change. When I turn right, the speed of the right wheels is set to 0.
Now, as you can see neither of them are perfect but I think it proves my point that the wheels should move slower. I was wondering, how slow should they go? 
Is there some kind of calculation that I can do for it?
Thanks in advance for your amazing help!