Problem with Wheel Colliders: Jitter and unstable!

Hello everyone,

I am currently working on a VR Biking game and need some help with the wheel colliders.


Since simulating bike physics is no easy task I opted for just making a car with 4 invisible wheels and using my bike model. I had it working but decided to try to make a more realistic feeling bike, which failed. When I tried to get back to the working “Car style” some issues started to appear:

  • Extreme Jitter, horrible for VR!
  • Weird behaviour when turning

I tried everything in my power to fix this, including:

  • Disabling VR Mode
  • Disabling any Camera or Movement scripts attached
  • Lowering / Raising the gravity in the Physics Settings
  • Modifying the Wheel Collider values
  • Changing the Center of Mass to any position (towards the front / back, move it up / down)
  • Entirely deleting Unity with all the settings files and reinstalling

NOTHING Worked! So I decided to create an entirely new Project and simply follow Unity’s standard Wheel Collider tutorial. I recreated the given instuctions step for step exactly like shown, but when I hit play and drive around the random jittering still occurs, even on a completely flat plane! In my confusion and rage I made this video simply showing all the settings and the weird effect: https://youtu.be/ujn5TJ3Mv4g

What is going on here, does anybody know? I’m sure it’s just that I forgot about one super simple thing or something stupid like always, just need a nudge in the right direction :slight_smile:

Its Probably because you didnt add any collider to the body of Bike or the car, which really makes the wheelCollider unstable