These are Cooper Cobras on the rear; I put them on just before DCS, they have about 1800 miles on them. I'm sure I felt something when I first got them, but didn't expect it to be the tires. Does this look like it could be anything but the tires?

If I get to where I think I can really tell the difference one side to the other, I'll swap them and see if the humptity-hump pattern follows the tire.


Left side Rear: