Hello to Unity community! I am making realistic tank physics in Unity using standard WheelCollider. And now I faced with some problems. 1. WheelCollider friction on slope. Tank can't climb slopes, even on small. For example, 10 degree slope stops tank completely. I played with friction and substeps, but unfortunately its not work. In Unity 4 was been ability to max out friction, in Unity 5 it makes your vehicle explode in space. WheelColliders config: Substeps is 40. 2. WheelCollider sleep. As you know tank can turn on place, and there is second issue. I dont know why, but when tank turns on an uneven surface and angular velocity falls around ~0.5m/s, WheelColliders dont respond on torque, they like became asleep, tank just stops, and start again, and so on. However on flat surfaces its doesnt happen. I tried a lot of things, and none of them didnt work, maybe you know how to fix this, Thanks!