The tracking repair is only as good as the next pot hole you hit, or kerb you scuff as you park.
So get a good price, some place incuced extra checks..
A good rule of thumb would be if you know you have given the wheel a good hit, pot hole or kerb, thats the time to get the tracking checked.
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Wow Wirral History is coming along Great! Wirral History
we get +200 new members a month now