In this tutorial i will show you how to mke suspension for vehicles.

First create your wheel (a circle) and make three rectangles. (make sure they are really close together but not touching). Set the circles settings to 2 friction and o.2 restitution (bounciness).

Set friction on the rectangles to 0 and collision group B [Image:]

Then place three more boxes as shown below, collision group C.

Fixate them to the other rectangles as shown.

Now Add a spring from the Top box to the middle box [Settings = Strenght 0.8, Damping 0.5, leave spring lenght alone].

Position the wheel (circle) in the same place as the picture and click "add centre hinge"

Next you want to clone this whole unit and use a body or something (make sure its on collision group D) to join them together like so. Now you can give the hinges motor properties and set keys to control them.

Now you can make a track to test it on, make sure the track is on all collision groups.