Just throwing this out there, but I agree with everyone else. It’s most likely your tires and your plan sounds good. However, you might want to take a good look at each of them before you go to the trouble of taking it in. You may have something stuck to one of your tires. I know it sounds crazy, but my girlfriend somehow got a huge gnarly wad of chewing gum stuck to her tire and it made the same sound. Once it was off, no more sound. She was amazed too that just some chewing gum could cause all that noise.