I have a 2000 Nissan Quest SE. 1 month ago took van in for tire rotation. Shop said inside of rear tires were grooved with a circle cut. Shop adviced to replace rear tires and have them aligned. Rear tires were replaced and aligned. Problem continues - when driving at speeds over 40mph the inside of the van has a humming or wa wa wa wa sound. The steering vibrates slightly. Just got new tires and had the alignment done.

Any idea what is causing the humming or wa wa wa wa sound?

Derekvrichmond, June 2004

yes 1 Balance wheels again 2 check that bearings are correct and that wheel alignment is correct for the left/ right side of road and thatcamber setting is correct after this check the bushes at the top of the wheel connection arms for play

stephen holden, September 2004