So here is my alignment story. For a long time, I had issues with my 97 C1500 eating tires. I took it to 3 different shops, and had 5 different front end techs look at it. No one found anything wrong. We had a mechanic come by out machine shop for some press work about 1 year ago. He saw my truck and started asking about it. I said yea its in near show room condition, but I can get anybody to align it rite. He looks at me and he said He can do it, so we walk to the truck. He said yea you have an issue on the drivers side. Bring it to the shop and Ill fix it for you. So I did on a Saturday. He looks at it, and finds both upper A arm bushing were bad. So I had Him replace them, and align my truck. I went back 3 month later, after I knew it wasnt eating tires any more, and put 275/60/15s all the way around. At that time, I also had Him replace the other upper A arm on the passengers side. Yea, it cost me $1000 but I still have almost new tires after 1 year. Before that, I got less that 2 years out of my last set of cheap tires. At about 20,000 miles those tires shot. They were 50,000 mile tires. I have almost 10,000 miles on my tires now, with very little ware. Now you tell me why 5 different techs didnt see worn A arm bushings. No, Ill tell you why, because those guys didnt care. They just wanted to make a buck. Every time it was, sir you truck is aligned. They even gave me a print out of it being in spec. Like I said earlier, a good tech is worth every penny. I will gladly pay $100 for a proper alignment.