I had the Eibach ProKit installed in January. 6000 miles since then. No noticeable unevenness in the tire wear. That photo is of a tire on a car that was slammed, like maybe lowered by 3" or more. Or maybe it's running on airbags. If you mod a car you can mess with it some but you mess with it too much and you run into problems.
1-2" max for lowering. Then do a 4 wheel alignment. If the specs can't be aligned, then you need linkage modification. When I get a chip for the motor I want 410 hp. Not more. It will cause other problems.
Keep it practical. Extreme mods cost extreme bucks!