uneven tire pressure buildup while towing with airbags

rhagfo wrote:
The right rear will carry a bit more load and drag due to road crown.

Good point. I was at my buddy's shop the other day having the alignment done. He was showing me how the machine works as he was setting the wheels right. He didn't make it perfectly straight, he explained that they have to be slightly off due to the crown of the road. If you make it perfectly dead on straight your car will always want to go off to the right with the slope of the road,.