Went out for a drive last night and parked up for a chat when I started up again I noticed a screech from a belt somewhere in the bay! is this something really bad I have no idea please help. Then when driving home something metal either came from the bay and flew off or was picked up by the tyre. Stopped to look for it but could only find a bolt thread in the road with no head to it can't work out if it was from the clio as it wasn't hot even though I had been out for a good three hours! Please help guys worried to go and start it in case it is something really bad :-(