help determining vibration noise
 

I get a audible vibration, I also feel it in the seat, at 60 mph. I don't feel it in the steering wheel. I have a fresh set of tires, properly inflated, with an alignment too. The vibration isn't constant like a steady drone, it pulses...whomp whomp...low pitched, not high like metal rubbing.

Any ideas?

Re: help determining vibration noise
 

Rotating parts resonate at different frequencies. Driveshafts rotate 3-4x wheel speed so have a higher frequency and tend to resonate at lower and higher vehicle speeds.

60 mph is almost always related to something spinning wheel speed.

Re: help determining vibration noise
 

So it may be a wheel balance issue still. Anything else to look for?

Re: help determining vibration noise
 

Runout on the wheels, tires, hub flanges, axles/bearings

Re: help determining vibration noise
 

As my daughter replied... "oh yeah, I hear it, too. Just turn the radio up louder. See, it went away."