I purchased a set of 33 inch ProComp All Terrains about 5 weeks ago. Now each tire has about four spots where the tires dips down then up again. The dips are about 1/2 an inch wide and they go from the rim to the tread. I 'm not sure if this is dangerous but I am sure it looks terrible. All my buddies are making fun of my new tires. New tires should not look like this. I'm going back to 4-wheel parts on Friday to have them look at them. I had the tires put on at another shop but purchase them at 4 wheel parts. I really want 4-wheel parts to replace the tires. What can I do to make them do this? I have terrible past experiences with getting tires warranted. (They always find a way to make it your fault) Does anybody have a "friend" who works at a 4-wheel parts in the bay area that I could take the tires to?