[Rob Doe]

I've been using the same tool as Paul. Our car goes straight down the road if not upset by common bumps, slopes and winds. Tire wear is even across the tread.

One thing not mentioned here yet: Make certain your wheel bearings are not loose.

I'm thinking that a wheel alignment on a modern vehicle with modern tools also aligns the front and rear wheels to each other, or at least checks it???

Our coupe had a shallow bend in a rear radius rod. When the rear end was disassembled for a cracked axle along the key way, the axle housing on the same side had a bent flange in one area of several degrees. I was told this happens when the car hits something like a curb with a major force. I could just barely see that the rear wheels were out of alignment all along, but didn't catch on until removing working on the rear end.