First off, Im proud to say that I succesfully drove my car from Cleveland to manhatten without ANY incident. (465 miles each way)

Also, I averaged what I thought to be stellar gas miliage at 25 mpg!

However, towards the end of my trip, I started to notice a bit of a humming noise coming from the rear end of my car.

Logic tells me its either the diff, or a wheel bearing. Is there any way to check what went amiss without doing major surgery?

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2