Started off with adjustable rods, straight edges, set squares, lines, chalk, plumb bobs, dividers, squares, spirit levels. Then Scrubbing Boards, Kismet Gauges, Dunlop Opticals, Blah! Blah! and so on, 'cos cars have always needed to run fairly square on the road, being a basic rectangle? Then light beam optical alignment gear, now lasers, next atomic grey rays?
Back to basics, string and chewing gum for me! I'm perfectly satisfied if the track rods are adjusted equally, with the toe-in/out correct, for the model, the steering wheel spokes are straight, and all adjustment fixings have been tightened and made secure. Assuming the necessary adjustments have been made correctly, and accurately, uneven tyre wear will be minimal, hopefully.