I just got some new 31" AT and they are rubbing in the front when taking sharp turns... any suggestions?

 

Trim back where it is rubbing, often it is the standing seam behind the plastic wheel well liner and that can be trimmed or hammered flat to give more room:
- http://www.4crawler.com/4x4/ForSale/...it.shtml#FAQ10

If averse to trimming, lift in one manner or another. Or if no tire damage is happening, live with it for a while until the tread wears down a little.