For those AWD owners who have a lowered suspension and staggered setup, it is very important to keep the rolling diameters the same.

1) Does a negative camber effect the rolling diameter?

The results from my alignment show the L&R rear wheels camber at -2.2degrees and the front wheels are within specification. For some reason I think the negative camber maybe effecting the rolling diameter and revs/mile.

2) I'm not sure how to compensate for that, if I even need to?
3) Do I need more air in the rear or does the weight of the front compensate?

My wheels are suppose to be 0% diff between front and rear but I think the rear camber maybe effecting the tire mfg. specified rolling diameter and rev/mile?

 

1) no it doesn't. at least way too marginal to be considered different

0% difference is the "goal", but even with your setup now, there could be marginal difference between the front and rear already. you have been riding your car for so long and you haven't seen issues. you are fine

 

Rominl is right. Neg. camber will only affect your tire wear...in this case increased inner tire wear.