I wrote an earlier post about a low humming sound which makes itself more noticeable over 30mph. When I put the car in neutral going at these speeds, the sound doesn't change, so I'm ruling out the exhaust, transmission, engine.
It was first diagnosed by a shop as wheel bearings, but upon closer inspection, it turns out that the bearings are fine. Then the shop said that they suspect its the tires. So I went to a tire shop, had the tires checked out, and they said the tires were completely fine. No cupping or uneven ear. While I was there, I had them do an alignment, and they said that the car weren't that much off spec. Driveability is fine. The noise is just annoying. Any ideas out there?
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