Need a Diagnosis - Slight Resistance While Turning

Just picked up a 2009 Tacoma Double Cab and drove it back and forth to Chicago from West Lafayette and noticed that it has a tendency to drift slightly left at speeds of 65+ MPH and at mid-range speeds (25-50mph) I can feel a slight resistance/vibration when turning the wheel left just a little. Like, while drive straight, if I ever so slightly turn the wheel I feel resistance/vibration.

The wheels were just rotated and balanced, so maybe they did a poor job or could the alignment be off? I am running 16x8 wheels with p265/70/16 tires.

Any thoughts?

 

Sub'd. I'm strangely enough having the exact problem since I put my new wheels on. But it's an off and on thing. Haven't gotten a chance to check out the front end for play. Have you checked your wheel bearings and balljoints? Waiting on some new ucas then an alignment is in my near future.

 

Honestly haven't checked anything yet...don't really know what I'd be looking for, so thought I'd ask if there were key things to try to look at.