Alignment problem or something else?

eurojjj19

Little backstory, 2014 370z, approaching only 3000 miles. Bought the car in November and spent about a month on the stock 19" rims/summer tires. Got a set of wheels with winter tires (18", 245's square, no spacers.....i was told this setup would be just fine by people on this forum) and had those put on for the winter. They felt great and I had no trouble with them. Fast forward to this past weekend, I had the stock 19" wheels put back on the car and the tires seem to be fighting the road (lot more friction than i think there should be and more than i remember there being when i bought it). Im speaking of the front tires here as that's where i feel it predominantly. Looking at the car head-on, there seems to be the very slightest bit of toe-out on the front wheels now and Im thinking that might be the problem Im feeling while driving. Also, when driving the wheel has to be held about 3-5 degrees to the right for the car to maintain a straight line. Does anyone have any idea what the problem may be or the cause of it? Everything on the car is stock fwiw.