Normally i do allignment every 6 months once or about 10k km. Then do tyre rotation as well.
Camber screw original ones are very thick and strong. Only if you kena accident or pot hole until tyre burst or rim bent, and damage it, then you have to inspect for damage. If not, i wont bother replacing the camber screw at all.
I did brake disc skim for RM80 per piece, not per pair in Klang Valley. Myanmar guy come do for me.
Tyre wear pattern not only depends on wheel alignment but also the human attitude. Lazy people who dont go check tyre pressure frequently (although its free in this country), will have uneven tyre wear due to under-inflation.

This post has been edited by k!nex: Feb 1 2017, 05:01 PM