"unless you've installed an adjustable front track bar and adjustable control arms, there really isn't a whole lot a shop can to other than re-center your steering wheel and take your money." ...
:yup:
I scanned your write-up and it's really good, thanks for that. Also the thing about using the axle to check caster really took me by surprise, since I'm used to independent suspension where calculating caster is not easy at all. But it looks like it's a snap on a Jeep.
I just wanted to add one little thing that you might have covered it in your doc, so pardon me for repeating. Since front toe is the
only thing they can adjust anyway, as log as it is within the shop's likely very loose tolerances, they will not adjust anything at all including centering the steering wheel before taking your money.
Also since toe and steering wheel center are easily adjusted at home,
and both are subject to the driver's preferences to a certain degree, then it doesn't make sense to pay anyone to do it, even if they did do it.
From what I can find, the factory spec for toe is 0.17deg to 0.23deg total toe IN, which I guess makes sense considering the variety of tire sizes on Jeeps. If my math is correct then on 32" tires that is only a range of about 3/32" to 1/8", or really only a little over 1/32" of tolerance. That's very small. But on the picture of the printout from the shop at the start of this thread, they are allowing 0.03deg to 0.18deg PER SIDE, which is about 5-6x the factory tolerance. So even if it were out of spec according to the factory tolerances, many shops would not necessarily adjust it until it were out by more than 5x the specified tolerance.
Looking at the printout, it looks like they may have adjusted the toe even though it was inside their tolerances before they started, or their machine has 0.03deg or more of margin Fortunately it's also within the factory spec.