Quote
...a tire out of balance.

That was going to be my first guess.


Quote
...It can also be wheel bearings

And that was my second.

But even thought you've replaced them in the last year or two, they're still worth checking...
One (or both) of them could need some preload adjustment.
(IIRC, it's considered routine scheduled maintenance every 15 or 30 thousand miles)



Also - If you've taken any hard hits (especially off-road), you might want to check your Idler & Pitman arms as well.

Ask me how I know <img src="/forums/images/graemlins/shiner.gif" alt="" />


<img src="/forums/images/graemlins/cheers.gif" alt="" />
<img src="/forums/images/graemlins/smile.gif" alt="" />

Six Isuzus, so far... still have three of them.