Weird problem

[Ldub]

I'd start with the easiest (after checking pressure) check first...

Jack up the tire in question (using all appropriate safety methods=jack stands), then get ahold of the top & bottom of the tire, & try to move it in & out (opposing direction, up & down), to see if the bearings are tight.

Upper & lower ball joints, tie rod end, upper & lower control arm bushings, are all possible culprits too. Also, it could be a separated belt in the tire...so give it a few rotations while it's off the ground.....

[captainmind]

Thanks Ldub. I just jacked it up and tried moving the tire. It didn't seem to have play but I can't be sure. Tread is good...tires are 3 months old.

That's about my extent of understanding of the mechanics under there. Guess I'll need to take her in. She drives fine but I don't want to risk anything.