Ok we can officially axe the tire and wheel idea. I went up to the place where i get my tires from. They checked each tire, tried rotating them, and new tires. Nothing worked, it still pulled to the right.
Not to mention we already tried putting stock wheels with 225/55R16's back on the car and it still pulled a while back.
So I think we can safely axe the idea that it could be the tires or the wheels.
Whenever I'm on a flat road, and i put the wheel straight, and let go of the wheel, the wheel will slowly turn to the right, and hence, the car will go right. Now I don't know if it's the other way around, whereas the car starts to go right, forcing the wheel to turn to the right. Either way it's happening.