Are you guys raising/lowering your ride heights when changing tires? For example, my Electrons are about 1-2mm radius bigger than my slicks. When I slap on the Electrons, lowering the ride height 1mm produces a bunch of unwanted effects (camber angles, camber link geometry, etc.) that would be a pain to re-sort.
Doing some testing, it seems better to just leave the car untouched, which means you are driving at different ride heights, depending on the tire.