nomis217

I'm sure this question must have been asked before but I am new to this forum, but what is the answer to "can I replace just one tyre on an A6 quattro or do I need to replace the complete axle or the full set"? I have one front tyre that has worn on the outer edge and was an advisory on its MoT but also looks more worn than any others on the car, so suspect one of the fronts is newer than the other.