I've been driving 20+ years and know this isn't normal. I also know it's not drastic. I wish I had those readings for you but don't think that's something he would be willing to give me. Like I said, he didn't charge me anything so I don't want to ask for too much. He seemed pretty convinced that it was the tires, but maybe he's not as good as I have heard because I really doubt it. You never really know who to trust with mechanics, I know there are honest ones but how do you know that they know their stuff? I'm always afraid to ask too much because I don't want to insult anyone. His idea was for me to go right to the tire shop but I don't think it would help. When they rotated and rebalanced yesterday wouldn't they have noticed a tire problem?