i just went thru this about three weeks ago. I had an accident in 2012 on the right side. my steering wheel has always been slightly off to the left since then. Well I finally decided I wanted to fix it and brought it in. They performed an alignment. They handed me a card like yours, but it wasn't as off as yours, but they said my left front was off and they couldn't properly align it. Asked me if I had been in an accident, and I said yea but on the right side. They said well did you hit a curb hard? I said yea my gf did, just look at the chunk of tire that is hanging on the left tire. He said well that's probably what did it. He said the mounting point for the shock is slightly off. They could notch the shock to get it right, but they don't do that type of repair. I looked at bringing it to a frame shop, but its not easy finding a place around here. Not sure I would want to spend the money anyway. Your post and these comments got me questioning this. My car has 80,000 miles on it, so maybe it has some wore out shocks or something?
You may want to go with less camber than the GT500 spec calls for if you find you keep replacing front tires because the inside wears out. Understandably the gt500 camber setting is for cornering but you can use less on a daily driver to extend tire life.
If your camber was -4.5* your wheel would look like this:
I assume that it does not.
If your toe had a spread of almost 2*, you would know immediately that something was very wrong.
Take the car somewhere else, whoever performed this alignment doesn't know how to use their equipment properly, which means that you'll never get accurate results.
If your camber is still out of spec, replace the upper strut mount. Caster is not overly important as long as it's not way out, and isn't really adjustable with factory parts.
From what I'm seeing it looks as though the steering wheel was turned to the left when he printed that. The camber/caster values will change as the steering goes the the left and right arc. Well technically camber, caster requires a sweep to measure, for the camber to be positive on the left and negative on the right I would assume either a major accident or the cradle isn't centered. Anyway I would suggest taking it to a good alignment shop (word of mouth or look for a lot of expensive cars in the lot) I would rather have someone use old school gauges and a toe bar that knows what their doing align my car then an idiot with a 50k alignment machine that has no concept of what he is doing! Here are the specs as per Mitchell.
It wasnt the tool, it was the person using it for sure. Definitely something fishy going on, especially trying to sell you a bunch of uneeded "repairs".
Thanks guys I will take it somewhere else for sure. The steering wheel sits absolutely perfect and the car drives straight as I could ask it to. I will just have to get the wheel balance checked for the steering shake. Also something to note is that they told me they just purchased a brand new alignment machine so it seems to me that they just don't know how to operate their new equipment.
I agree with the consensus here. Ignore the caster, it is fine. Toe is easily adjusted. The PITA on these cars is the camber, in other words the amount the top of the tire is tilted in or out ay from the car when viewed from the front. One of your camber readings is a positive number, which means the top of the tire actually tilts away from the car. You should be able to visually see that.
Take it somewhere else. If those numbers are correct, you have something worn out or bent.