WheelCollider Spring bug

I'm in the beginning of making a car/racing game. It was all fine then I saw that my car tilts a bit. I opened the scene view and this happened:

I noticed that the wheels that are "lower" have their Force App Point about 0.1 lower than normal (0). I also noticed that it happens to two wheels at a time and both wheels are parallel to the other two. All wheels are configured the same. I set the Target position of the springs to 0, but it also happens if I set it to the default (0.5) value. The car itself moves normally although as i mentioned it tilts.

If you can, please help me, this bug is driving me insane (no pun intended).