Dont have 18s but try the Yokohama AVS S/Ts. I've heard a lot of good things about the yokos. Do some research, I'm sure you can find a wealth of info on your tire choices.
Potenaza (OE) is an ok tire... good enough to be OE but nothing special w/ fairly poor wear ratings.
A forum community dedicated to Infiniti FX owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, maintenance, and more!