Hi All, A few previous posts suggest a possible diagnosis for some rumbling
noises that I have been hearing in the back of my 86 Vanagon.  It seems to
be making a louder than normal low roaring sound on cornering at speeds
above 45 MPH.  I have had brake work done, and had my outer bearings
inspected, with no negative reports. Also, it seems to get louder with speed
on the highway.  The exhaust system, that I thought might be leaking or
contacting some object, is completely tight, and without leaks.   I tried
the archives on "inner bearings" but timed out before getting my search to
cover more than a year.

Any suggestions on a positive way to troubleshoot it without tearing
everything down?  Also, if it is an inner rear bearing, I assume that it is
necessary to replace all four bearings, or at least pack the outer ones if
they are not worn?  Any suggestions for the correct type and manufacturer
for rear bearings?
Thanks,
Jeff Hartman
Juneau, AK
1886 Vanagon