VIbration when turning at low speed
 

I have a switchback in my driveway, which it pretty steep. I've noticed that when I'm turning right going uphill on that switchback, with some accelerator applied to get up the hill, I get a vibration through the steering column and floor. Not super-noticeable, but noticeable. I've also tried it on the flat. If I turn the steering wheel maybe a little more than halfway towards the "stop" at the very limit, and then accelerate a little bit, the vibration is there too.

Anyone else seen this? I don't think my old landcruiser or my current fj exhibit this vibration. Don't know if it would be originating from the transmission or cv joints. Doesn't seem completely right in an "off-road" designed vehicle.