I just bought a bugaboo off a lady for ?180, seemed great until I put my daughter in it and it made this grinding sort of sound when I turned corners. basically, I have found a lady to repair it in Lee and .......it needed a new chassis unless I was happy to live with the sound, which I am not. so I've had to fork out another ?100 for the chassis and its in for repairs. was quoted ?92 to repair and service and ?35 per back wheel so buying the new chassis was much cheaper. Good luck. if you need the contacts details I can post.