Thinking about changing my Plaid X wheels from 20/45 to 19/55 (overlands from T sport line). Not happy with the ride on rough roads. How much more comfort will there be on broken pavement and riffles. How much quieter will they be. For such an expensive car, it should be able to not only be performance......but ride like a cloud. Try driving an Audi etron and you will see what I mean. Both have air suspension but why is the audi so much more comfortable?