1992 Nissan 300ZX Near noise

I will be driving my car when I slow down it make a popping sound coming from the rear axles I was thinking it was the breaks I did a break job but it did not help it only happens after driving for a while and only when I take my foot off the gas petal and when I’m slowing down it sounds like a scrape sound its only make the sound when the wheel get to a point of rotation