Hi my car used to pull to the left very slightly but it wasn't bad enough to be troublesome but now I got 15" wheels instead of 17 on the front and the problem has more than tripled! took it to garage as i thought it was just tracking but they said it's something else. cos they had the wheels on low friction plates and when you turn to the right the steering spins back to the middle?? and turn left and it doesn't. i'm very confused and it's very hard to drive! anyone with ideas?