Vehicle won't stand on wheels and won't move

Hi guys,

I am stuggling with UE to make a vehicle work. I get this

321858-vehicle.png

Also the vehicle do not move. I hope these things are related. Any idea?

this is the BP

321860-throttle.png

Thanks,
G

Solved. I deleted the collision spheres from the wheels and I set up correctly the dimension of the wheels in their blueprints.