I got two new tyres fitted to the front of my car a few months back and when i left the garage the car would not drive straight when you held the steering wheel in the centre. I just presumed that this would be the tracking and that i can pop this into a garage anytime for them to sort out. Anyway, I did pop in to the garage a week or two back and the tracking is perfect. Does anybody have any suggestions as to what might be causing the car to pull to the left? I also have different tyres on the front wheels to the back but i'm not sure that will make any difference?

Cheers

Chris