I have a 2000 Dodge Ram 1500 4x4. I’ve been running 15 inch wheels and all of a sudden the rim hit the caliper. I’ve gotten new ball joints hubs shocks tie rods and it’s still doing it. What could cause this?

 

Dual piston front calipers? That's why. 15's are too small. Even 16's are marginal.

 

 

Wheel bearing getting bad?

 

Where are the wheels hitting the calipers? Did you do any brake work recently?

 

First, im surprised the 15's ever fit.
Bad wheel bearings most likely. Check to make sure caliper mounting bolts are tight too. There are not very many things that would cause this, should be easy to find the source.
One more thing, if you have the stick on wheel weights maybe they are coming loose.

 

I'd replace the wheel bearings first....

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