Algodoo

just select one wheel at a time, and press the "transform into circle" button under the sub menu geometry actions.....

your "wheels" at the moment are actually polygons, and therefore are less stable - this will solve your problem

Also, you have to make sure the wheel is dead center aligned with the moving object. Also, it will look weird if you have any 3dness to your photo-texture.

JaxXNash, that's a nifty little trick! I did it to this scene, it worked. I'll need to do that.

I solved this by lowering the bounciness, but JaXNash thas a good trick!

JaxXNash, I love you

XD
That's a great trick.... w00t

...

Why you posted dots????

lol i found this picture on gooogle images and i made it without textures

it looks really nice

but cant upload cause somethin is wierd.

The comment below, and try increasing damping to the slider limit. I bet it would work.

Without looking, I can tell you 3 different things that might be wrong.
1. Wheel is too much of an ellipse and not a perfect circle, you can use "transform into circle" to fix this problem.

2. Hinge is off center, make sure you use "Add center hinge" when doing a texture car or any car for that matter.

3. Car is too overpowered. Unpause the scene, and let the car run while adjusting the top speed or whatever of the car. When the wheel stops wobbling, stop adjusting.

Have phun