Go to Costco and look it up on the MAST fitment guide, which gives you plenty of options for plus sizing and if somethings not on the list, they can use the Bridgestone tire size comparison program to show you how far off your speedometer will be and give you tire height and width differences for whatever size you want to move to.
WE RULE!!!! Then buy tires there because you get all sorts of goodies, like Road hazard warranty included in every price.