2014+ Largest tire size on stock 18s?

[twlander]

I recently installed only the front part of the RC 2.5" leveling kit and removed the air dam. The stock tires are getting ready to be taken off and replaced. The reason for this post is to find out if anyone has fit a 34" tire on stock 18s without rubbing the sway bar or anything important (i don't mind cutting some carpet).

 

looking at 295/70r18 .. what do yall think? if not I can always get 275/70.