Question Speeding up makes my car slippy and hard to rotate

I'm new to unity, and I'm using this asset as the track in my car game:
https://assetstore.unity.com/packages/3d/environments/roadways/race-tracks-140501

I got my car controls fine, I tried it on some terrains I created using different materials, it was doing great.
But then I added my car on this track, and I faced a problem, whenever the car speeds up, it feels so slippy on the track, and it's difficult to rotate the wheels left or right while it's in high speed, I have to slow down to do that
I'm using wheel collider, I'm not sure how to fix this

 

You have to add physic material to your racing ground.
this adds friction to your ground so you can control your car.

wish it works!