Running less camber will help reduce uneven tire wear. Toe is the biggest factor in tire wear for sure. A car could be aligned to 0* camber with .5* toe and stil have horribly uneven tire wear. A car can be aligned to -2.5* camber with 0 toe and have perfectly even tire wear.
The BMW being rear drive for most dictates increased tire wear on the rear when driven aggressively. It also dictates that a potential unsafe driving condition could exist with too little toe in adjusted in the rear due to snap oversteer conditions. That means that some toe in is a good thing for stability and needed. The problem comes in when too much toe is mixed with a good amount of camber on a rear drive platform that has a bit of weight to it. It's a receipe for terrible tire wear. Limiting the toe and camber to as little as possible on a street driven car will help to fix this. With my settings I have perfectly even tire wear.
Last edited by subieworx; 02-05-2013 at 12:27 PM.