My wife’s A1 (1.6 diesel) wears the inside edge of the rear tyres really badly. In less than 7000 miles we are down to the tread bar on the inside edge (see photo). The fronts are fine. Can anybody help or advise as my local Audi dealer is just giving me BS. 

Hi Keith welcome to the forum :) 

You'll find the members on here are a friendly and helpful bunch :) 

I have some questions...

What is the Audi dealer saying? 

What tyres are they? 

What's the total mileage on the car?

Obviously the first two things that need to be checked are Tyre pressures, tracking and wheel balancing. Sorry if I'm telling you how to suck eggs! 

Also dont forget to check the condition of the wheels for any cracks or buckling. Obviously if the car has covered high mileage then certain parts of the suspension such as the bushes and suspension arms could be wearing out. 

Cheers

Steve 

I would take the car to Pro-Drive or similar for a four-wheel alignment as a slight adjustment here and there in the steering/suspension will sort that out.

Thanks Trevor, I went down that road last September with a local specialist, after I had put new tyres on. However as this issue is with the rear tyres on an A1 there is no adjustment possible.

Hi Steve, I had a conversation last year with the dealer and they told me it was down to the set up of the suspension etc., hence the “legendary road holding of the A1”. However with less than 7000 miles driven since on brand new premium Continentals I have the issue again (except this time I know the mileage driven). I have checked all the things you suggest and have submitted photos to the dealer this morning but so far no clues as to what the root cause might be.

Current mileage circa 41,000 (car not here just now)

How odd. It's good that you've checked all the things I've suggested :) in terms of suspension I don't think any major components should be on their way out just yet. 

Sorry I can't help more.

Cheers

Steve

Most likley its traction ( worth to have it done ) or incorrect tyre presure