Hi, I have a 2006 subaru outback. A couple of weeks ago I noticed a sound when driving the car, the sound appears to come from the rear driver side wheel area. It sounds like something made of rubber rubbing together, there is no screeching or metallic (high pitch) sound at all. A while back I had gotten a nail stuck in the tire and every time the wheel turned it’d make a sawing or low humming sound, this sounds just like that. The sound is very noticeable when inside the car but you can barely hear it from outside the vehicle (windows down). It’s very noticeable while driving straight or turning right but when I turn left the sound disappears.
Anyhow, at first I thought it had to do with all the snow that we’ve been getting an some of it freezing on the inside of the wheel well and rubbing on the tire but I’ve cleaned both rear wheel wells and I can’t find anything that is on the tires or rubbing against them. I’ve been under the car as well and have also looked at the break pads/caliper area to see if anything is stuck in there but was not able to find anything at all.
I’ve put a recording of what it sounds like here: https://www.dropbox.com/s/o5xaf66815jqanx/carsound.wav?dl=0
Any suggestions as to what it may be?