Just bought the 08 Pathy V8..totally love it, but would like to change up the wheels/tires from soccer mom to stud.

Does anyone know what the biggest tire is that I could get on there without rubbing? I like the Goodyear Wrangler SilentArmor 275/65r18, but couldn't tell if it would hit. The tire guy said the size is custom order and that he'd hate to put it on my ride and then have to take them off. They would not be able to send them back.
Also, if anyone is riding on 20" or 22", is the ride worse? I've heard some rumblings about the ride going to !#*&^ after putting a larger diameter wheel on. If you have some pics with measurements (i.e. tires size, wheel diameter and width) to share, I'd appreciate it.
Thanks for the help!!