2D Physics not working correctly

Hello! I’m creating a 2D platformer, but i’ve ran into a little roadblock. I have a truck which I put colliders on it’s wheels as well as a RigidBody. I also have colliders on the ground so that the truck has an actual ground. I have tested by making a OnTriggerEnter2D function, and when the truck does trigger when it collides with the ground but it just falls right through. Any help would be awesome, thanks!

Triggers don’t produce a collision response; you just get a callback. You should not have the wheels as triggers then use the OnCollisionEnter2D if you need the callback.