After deleting my muffler I noticed this sound coming from the passenger side rear wheel. I do not think it's coming from the exhaust but I never noticed it until the muffler delete. I don't think they are related but am not 100% sure. My tire PSI seems fine, but the sound wanes as the wheels slow down. Doesn't matter if I'm using gas or just braking in neutral as I'm rolling. Any ideas? You can really hear it towards the end of the video.