My 2006 Honda EX V6 Mt accord has a fairly new harmonic and rythmic vibration sound. I first noticed it about two weeks ago. The noise (more noise than vibration that I can feel) seems to be the worst at about 60 MPH. It pulsates, so to speak, at a very steady slow cadence. It is hard to hear on some road surfaces, but I believe is there. I have not been able to determine whether it goes away after the tires warm up. I don't seem to have any vibration that is felt through the steering wheel. My tires are worn, but the tire shop tells me they are still in decent condition as of a month, or so, ago. Any suggestions? Thank you.

 

Check wheels for bearing noise/feel (grinding/roaring) w/ tire off ground and turned by hand. Use hand to feel center axle shaft for vibration/grinding. Also check for bearing play by forcing tire at 3/9 and 6/12 positions. Any play not attributable to ball joint or suspension looseness may indicate bearing looseness.

If nothing, then tire rotation may help. Tires w/ cupping can exhibit a roaring sound.

If no experience, professional help may be needed.

good luck

 

Thanks TexasHonda. I appreciate your time and suggestions. I'll post the answer after I (hopefully) find the problem.