salam to all i own a vitz 2008 model 1 month used sometimes while driving or in the standing position starring of my car gets v hard then it come back to normal and sometimes my dvd gets restarted itself while playing the songs i dun knw what to do. i recntly changed my rims now whenever i apply brakes a little hard a strange sound of TAK TAK comes and while driving when i accelerate a sound of whistle comes plzz experts give me some suggestions regarding my prob...