Left or right pull caused by caster, front engine cars you can not adjust caster and even camber too. Only toe can be adjusted. Caster can not cause abnormal tyre wear and can not be adjusted, so it can be ignored even found out of limits . All the roads are inclined to 10 to 15 degrees left, new cars suspension is stiff even though road is slant until it becomes soft car will not lean to left once suspension becomes soft your car actually slightly angled as per road slant this leads to left pull.
Two drive shaft are not equal in length once car heavy on ODO inside drive shaft universal joint makes groove in the casing and this causes left pull.
Physical caster damage this can not be adjusted most of the cars except some body on frame SUVs.
You can refer my post on alignment with pictures in my older posts.
Note: Small correction to post 507
As I told you if you car's Toe and camber values are fine then you will not get uneven tyre wear.
Two drive shaft are not equal in length once car heavy on ODO inside drive shaft universal joint makes groove in the casing and this causes left pull.
Physical caster damage this can not be adjusted most of the cars except some body on frame SUVs.
You can refer my post on alignment with pictures in my older posts.
Note: Small correction to post 507
As I told you if you car's Toe and camber values are fine then you will not get uneven tyre wear.
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