The car received an alignment 2 years ago and at the time I had the idler arm replaced. The guys who just replaced my tires are telling me that I need a new idler arm.
A few things you might need to know.
Scalloped is also called cupping and can be caused by alignment issues, bad shocks or balance of the tires.
Drifting can also be caused by alignment as well worn parts.
I didn’t see any mention of possible worn lower control arm bushings.
My Dart would darn near change lanes on it’s own when I first got it because of those bushings.
As mentioned above there are alignment specs for radial tires and if there isn’t enough caster it can also cause drifting.
I have also seen pitman arms that sucked right out of the box.
AND they can be installed in a way that causes them to be loose when new.