Drowd--- Hmmm, it sounds like you may be encountering the exact same issues as VX members "ScottinMA" and "Mile High VX" once experienced in the past. Both of these members have non-lifted stock VX's and have wider offset aftermarket rims and wanted to minimize rubbing when it came to tire replacement.
In the end after much intensive research and various fitment auditions, they both decided that the Yokohama - A/T-S in 275/60R18 (31" O.D./42 lbs) with its rounded smooth tire tread edge was the only available A/T tire that solved their rubbing interference problems.
This particular Yokohama tire is the only true A/T made in this unique rare size of 275/60R18 in the world, and I highly recommend it for your specific situation. Please read the below threads in explicit detail for more information on this rare sized tire:
http://www.vehicross.info/forums/sho...-s+275%2F60R18
http://www.vehicross.info/forums/sho...-s+275%2F60R18