Bald Tyres

[chicki]

HI everyone i just have a quick question. When i bought the Mini in May there was 4 brand new tyres on it. It's not 2 months later adn i have 5K miles up on the car. The thing is on the inside of both front tyres they are now completly and utterly bald. I had the tracking sorted the eving i brought it home. So i'm guessing that it has something to do with the cambre on the wheels. Does any know if this is a common problem? Also can anyone tell me how to adjust the camber? Thanks.