I put my a set of these on the rear yesterday and the high-speed cornering in the rear is very odd. Kind of wobbly and not predictable. I'm hoping they are just wearing in but I'm worried. They are the same height as the stock 245/45/18s, but a bit wider. Anyone else using these?

Black/Willow 03.5 6MT, Premium, Navi, Aero, SAT
350Z Nismo CAI

Black/Willow 03.5 6MT, Premium, Navi, Aero, SAT
350Z Nismo CAI