Originally Posted by dino_martino

Hey, I just replaced the tires on my 2012 370Z. Regular sizes, Size: 245/45R18SL (Rear) and Size: 225/50R18SL (Front). Typically, I drive over 120 mph every day and hit 140 mph about once a week. Since these tires were installed it feels like the car is out of control once I hit the 100 mph mark. I went back and had the alignment checked and it needed a little tweaking but the car still handles like a loaf of bread. Anyone else have this problem?