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