Originally Posted By: Finklejag
Just returned from America's Tire. They checked it out and said it's from road damage. The damage only goes down 3/4 of the thread block. They said the tires are safe. I guess one of the railroad tracks, bridge expansion joints, etc, was the culprit.
As usual, America's Tire staffs excellent macho tire salesman, but are often worthless when it comes to the more "difficult stuff." I've been down this road with them before, so this does not surprise me - they're cheap for a reason.
CapriRacer is knowledgeable in this area and I would take his advice seriously. Hopefully Kumho USA steps up to the plate.