Anyone noticed any knocking sounds when turning the steering wheel? (on a Golf GTI Mk6)

I've only driven the car for a short while so it could just be everything settling in. Doesn't happen all the time, just randomly - especially when parking. Wondering if the change from 7.5 to 8.5 wide wheels would potentially cause any new knocking type sounds to appear. I had the toe adjusted by the guys who fitted the wheels as the steering wheel was a little bent when the alignment was done.