I've got a 2000 with 93k, that tends to be on the higher end in this club at least, I've had an annoying whine at highway speeds for some time, I can't remember if it's on throttle or not but my tire pressures are fine and the fluids have been changed, you can do a search on the site for possible culprits, I think I talked with some mechanics about a few of the options they poo-poo'd the idea and I didn't press, I figured I would live with it until it became unbearable