Hello everyone! I am new to this site and I love it. I bought my first boxster about 3 months ago a 1999. The tires on my car were not from the same brand and the rear tires had about 4,000 miles on them. I noticed a very loud humming noise that appears to be coming from the rear. I wanted all tires to match so I bought some bridgetone Pole position tires, which handle great.
My problem noise is still there. It almost sounds like an exhaust gasket leak, or????? I put the car in neutral and I still hear it and it is very loud. Any ideas what this could be???? thanks for your help.