For years I've seen odd tire wear and its always blamed on worn out parts, even if your front end is brand new.
Alignment is big business. Here's why its such a racket...
The factory alignment specs are so wide that you can literally see a difference between the left and right front wheel and the settings are still "within spec."
The shop throws the alignment equipment on the car and pushes print. That's $129.99 x 15-20 cars a day. That's it 90% of the time, because of how wide the specs are.
Oh, and the before and after printout??? That can be edited before you print. No kidding...
And so what if your tires wear...most shops who do alignment also sell tires...
So, on my Mustang, i got tired of asking alignment questions and getting the default answer of "its in spec."
Alignment specs are very wide on the S197 Mustang - and even wider on some other cars and trucks. The camber spec is 3/4° positive to 3/4° negative and the toe is .010° + or - .020°, which works out to be around .040" total + or - .090".
What this means is, if the left front tire is toed in to .040" and the right front is toed out to .050" the alignment is "within spec," but i guarantee you will have outside (and/or inside) edge tire wear.
I got tired of crappy alignment that was giving me odd tire wear. Every question was answered with "it's in spec."
We always did our own alignments and we always used zero toe in or 'dead-zero' if you prefer. I prefer this setting for daily driving.
I broke out some old alignment tools from my racing days and did it myself....and the car drives better than ever...perfect directional stability over irregular road surfaces too...





Alignment is big business. Here's why its such a racket...
The factory alignment specs are so wide that you can literally see a difference between the left and right front wheel and the settings are still "within spec."
The shop throws the alignment equipment on the car and pushes print. That's $129.99 x 15-20 cars a day. That's it 90% of the time, because of how wide the specs are.
Oh, and the before and after printout??? That can be edited before you print. No kidding...
And so what if your tires wear...most shops who do alignment also sell tires...
So, on my Mustang, i got tired of asking alignment questions and getting the default answer of "its in spec."
Alignment specs are very wide on the S197 Mustang - and even wider on some other cars and trucks. The camber spec is 3/4° positive to 3/4° negative and the toe is .010° + or - .020°, which works out to be around .040" total + or - .090".
What this means is, if the left front tire is toed in to .040" and the right front is toed out to .050" the alignment is "within spec," but i guarantee you will have outside (and/or inside) edge tire wear.
I got tired of crappy alignment that was giving me odd tire wear. Every question was answered with "it's in spec."
We always did our own alignments and we always used zero toe in or 'dead-zero' if you prefer. I prefer this setting for daily driving.
I broke out some old alignment tools from my racing days and did it myself....and the car drives better than ever...perfect directional stability over irregular road surfaces too...








