Rear Camber questions....

[flekz]

now ever since i bought my x5 i noticed that the rear camber on x5's 4.4 are a bit negative... now today i seen a x5 that looked really weird to me. the front was slightly lower then the rear but the rear camber looked as perfect as i think it can get while i was on the highway but his rear was slightly higher then most x5's i see. now could he have had maybe some dealer work on the truck to make it that way or is it something thats just in my head. i went for an alignment maybe a year ago and the guy said that my bushings are bad in the rear. now i sit there and im like how are the bushing bad?! if my bushings are bad then every other x5 out theres bushings are bad also. he couldn't get a reading on the computer and it was pissing me off. now has there been anyone out there that has had first hand experience with 4.4's like this? cause im noticing alot of inner wear on my tires and as we all know tires aren't cheap for 19's and 20's, so a lil enlightenment on this subject would be much appreciated. thanks in advance