my 2 cents on how to spot a good alignment shop. Before the car goes thru the alignment process, they check the tire pressure. Once on the alignment machine they do the compensation process, which involves the car rolling back and forth. Then ask if there is a preferred alignment set up that i use or follow factory spec (in the machine list)

From experience most alignment shops dont understand the relation between caster, toe and camber. they just adjust according to the screen turning green. Most will tell me my alignment set up will cause my tire to wear prematurely on the insides, which is partially true but this highly depends on driving style.

in most modern cars if u change components like the steering rack, after having the alignment done you will need to recalibrate the steering angle sensor. Most alignment shops wont have the tool for this, or even if they have the diagnostic tool that supports this function they wouldnt know how to use it.

if your sole goal is the that car goes straight then well any experienced alignment person will be able to do it, and they dont bother about the small details of tire pressure and machine compensation. Cause they will normally compensate the toe settings when they road test. the reason for this would to compensate for component wear on the car..

yes true, however the general consensus of negative camber causes higher wear on the inside is a lil wrong.. tire scrub due toe has alot more effect when compared with scrub due to camber. (quote=littlefire,Jun 26 2024, 11:21 AM]
Tire wear really depends on different car, suspension type/settings. Example my dads BMW E90, original settings for RWD the rear tires already negative chamber thus why the rear tires always wear inner side first.

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