I just picked up a 2018 model X 100D. Carmax put on 4 new tires (22" OEM wheels), but they put Goodyear Eagle F1 summer tires. I live in the mountains of VA and we get snow and cold temps here so I know I need an all-season tire for winter. The small amount of research I've done suggests that the MX non-performance models came with all-season tires and the performance models came with the summer tires. I'm asking Carmax if they'll do a swap out, but I want to make sure I have my facts straight. Thanks!