Hissing sound at low revs
New problem for me. A couple of days ago I noticed a hissing type sound when driving in the underground car park at work. The first time I heard it I thought it was a puncture but all tyres are fine. It's only really noticeable at lower speeds and I could hear it until I built up speed to about 30mph. After that I drove 15 miles on a dual carriage way at [cough] miles an hour and then slowed right down when near home but couldn't hear it again. Next day when I arrived at work I could hear the same noise again. The car feels likes it's driving OK, steering seems fine, ride is fine and speed doesn't seem affected. I can only hear it with the driverís window open.
I searched for hissing and one post mentioned loose turbo mounts.