How do tell if you have bad tires Aside from the obvious worn tred?

Answer 1

You can't. You could always go to a garage and they will always tell you they are bad..

Worn tread is obvious. Overheating or sliding around or under or oversteer are tire pressure problems. Sure there are things like thrown tread (separation from the body) but this is because you bought junk. Apart from that, there is little to this subject.