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(+1)

So satisfying !  I felt like I was 16 again in the school parking lot during a snow storm - fish tailing all over the place !  It is really impressive doing this in 3 hours.  I attempted to do the same thing you did and after 1.5 hours I had the car that flipped and skidding that did not work.  There is no way I would have gotten to what you made in another 1.5.  Very impressive. :)

Thanks man.  If you were trying to do it in Unity, I found this blog post about values for wheel colliders which I always start with.  Takes a lot of the guess-work out of it, and it allowed me to only make a few tweaks to those values afterwards.  https://forum.unity.com/threads/good-values-for-wheelcolliders.441506/

Also, FYI I made some tweaks afterwards to them but here's the values I currently have for them.

  • Front wheels
    • Mass: 20
    • Radius 0.8
    • WheelDamping Rate: 0.25
    • Suspension Distance: 0.2
    • Force App Point Distance 0
    • Center: 0,0,0
    • Suspension Spring: 3500
    • Damper: 4500
    • Target Position: 0.4
    • Forward Friction
      • Extremum Slip: 1
      • Extremum Value: 2
      • Asymptote Slip: 1
      • Symptote Value: 10
      • Stiffness: 2
    • Sideways Friction
      • Extremum Slip: 1.2
      • Extremum Value: 1
      • Asymptote Slip: 1
      • Symptote Value: 10
      • Stiffness: 1
  • Back wheels
    • Mass: 20
    • Radius 0.8
    • WheelDamping Rate: 0.25
    • Suspension Distance: 0.2
    • Force App Point Distance 0
    • Center: 0,0,0
    • Suspension Spring: 3500
    • Damper: 4500
    • Target Position: 0.4
    • Forward Friction
      • Extremum Slip: 1
      • Extremum Value: 1
      • Asymptote Slip: 1
      • Symptote Value: 10
      • Stiffness: 2
    • Sideways Friction
      • Extremum Slip: 2.5
      • Extremum Value: 1
      • Asymptote Slip: 1
      • Symptote Value: 7
      • Stiffness: 0.8