Alignment specs, S550's - IMBOC
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post #1 of 6 (permalink) Old 03-08-2019, 01:33 PM Thread Starter
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Talking Alignment specs, S550's

Here's a Ford printout of alignment specs. Notice there's quite a variation, and if used as a daily driver, extra camber can cause accelerated tire wear.
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post #2 of 6 (permalink) Old 03-08-2019, 03:27 PM Thread Starter
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post #3 of 6 (permalink) Old 03-08-2019, 03:40 PM
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One person's opinion...

Getting a performance car aligned for the street can be challenging. First the equipment used by a lot of shops is not well maintained/calibrated and when that's the case you won't know what you have. Second, in terms of camber, a 1.5 degree range (front) and a 2.25 degree range rear is too much a variance especially when shops simply work off of the factory spec range and anything within that range is "acceptable" to the tech and to the machine. That means a left to right variance could be significant but arguably "within spec".

Good alignments IMO start with knowing that the equipment is correct and finding a tech who gives a damn to adjust the car within a tight range from side to side and best done with driver in the car. It's a pain to achieve this, but most towns/cities with a reasonable population will have a shop or two that gets it. I have "a guy" who I've worked with for over 10 years on chassis setups and I bring a bullseye level, a straight level and camber gauge every time and we start by checking the rack before working on the car. None of that means anything if the alignment machine is not calibrated and checked from time to time.

Positive camber, even a little on a car that is driven enthusiastically on the street is not a good thing for tires or driving fun. Probably best on a Mustang to align to max negative camber or close per the factory spec. That should provide good tire life and good handling.

It's more expensive for a good job but it's probably worth it.
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post #4 of 6 (permalink) Old 03-08-2019, 03:50 PM Thread Starter
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I have a smart camber tool that I verify the shop's alignment rack with, and I bring a 6 ft level to check that the hoist is level.
Lot's of shops never calibrate their alignment equipment or their wheel balancers. In our small town here, most of the time I do my own alignment during lunch break. One time the alignment guy quit and I trained the new guy while setting up my truck.
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post #5 of 6 (permalink) Old 03-08-2019, 07:16 PM Thread Starter
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post #6 of 6 (permalink) Old 03-09-2019, 07:20 PM Thread Starter
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