How can I prove that I haven't 'kerbed' the wheels of a Mercedes-Benz E-Class that I have to return next month?

I bought a Mercedes-Benz E350CDI Coupe in July 2009 and have to hand it back next month (PCH). The AMG alloy wheels have deteriorated to such an extent that the lacquer has broken away and in most parts bubbled. The dealer has said that it is because I have "kerbed" them and they will only make a contribution towards repairing/replacing them. The thing is, they have bubbled in the centre of the wheel only, in one instance, so I disagree with them.

A mechanic told me, off the record, that their wheels are awful and they are constantly replacing them. I have to hand the car back in a reasonable condition and I have only done 34,000 miles. I am worried that they will hit me with unreasonable costs for repairing the alloys, when I don't think I should have to pay anything and it is just reasonable wear and tear. Can you help?

Asked on 8 April 2012 by KH, Heswall,

Answered by Honest John
What the mechanic has told you is true. So photograph all of the wheels in detail, proving that you have not 'kerbed' the rims, then tell the leasing company that you will countersue for any amount they try to charge you for leasing your a car with wheels that "were not of satisfactory quality" than attempting to charge you for the inevitable deterioration. That should shut them up. But obviously if you have kerbed the rims you are liable for the damage whether the centres of the wheels deteriorated all by themselves or not.
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