you could make the 305 work with a +15 you just may have to do a lil plastic trimming. The Nitto Terras are great tires. They would be my first choice in an AT but I run MTs. Also you might want to look at the tire specs individually. A 305 nitto wont spec out at what a 305 cooper of bfg will for instance. even though they are the same size they may spec out slightly diffrent. some brands run biiger or smaller than others. you really see this when you get into a 35x12.50 size. so look into that as well. It might only be like 2 tenths of an inch diffrence but that could be a diffrence in rubbing or not. It all boils down to what how bad you want a certain wheel and tire set up vs how much your willing to trim. Me for instance willing to trim plastic is fine trimming metal is where i draw the line but everyone has theyre preference.