Winter wheel / tire sizing for G37xS
I just picked up a 2010 G37xS and I'm hoping someone here can shed some light on winter tire sizing. Although the xS model comes with 18 inch all seasons, I was under the impression that the G37xS models had the same size brakes as the non-sport X models (only the RWD S models have the bigger brakes, no?).
Accordingly, I was going to put on 17 inch winters. BUT, 2 dealers I have spoken with are saying that I need 18 inch wheels because the brake calipers are bigger on the xS model.
Can anyone shed some light on this? Is anyone running 17 inch winters on their xS model? And, just in case the specs are different in Canada, anyone in Canada running 17 inch winters on their xS?