Thank you, I believe I understand now.

The scribe line is on the tread area / not the sidewall.

Is there an acceptable variation, or is any measurable difference too much?

Have you seen a "perfect alignment" still allow feathering due to bad shocks?

What about my new shocks/ride height question?

Thanks very much.

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1994 C280, dark green metallic
105k miles

1991 190E 2.6, Black
191,500 miles
(sold to another forum member)

2003 Chevy Tahoe LT, Redfire Metallic
105k miles

1989 Mustang GT Cobra Convertible
43k miles