Garage said mine was shot when they did the MOT a couple of years ago so I let them replace it. Picked the car up just as the garage closed. First corner I came to I nearly put it in a wall as the steering didnt self correct any more! Took it back and they said the problem was because the new one was a different length from the old one. Tracking was therefore out a mile. They corrected it and its been fine since. So get the tape measure out or you might be scrubbing those nice new tyres