Been on other forums about this; My 2005 Bug Jive had the front disc break off from the hub at 4000kms. Rolled back over a traffic sensor, "clunk".. front disc freewheeling..no brakes. Scootopia Bris. replaced complete front wheel under warranty. Broken one appeared to be one piece hub/disc with no signs of weld. Replacement has obvious welding right around it. Quiet design fault correction perhaps??? Glad I wasn't under brakes for anything serious. Any thoughts?