You can go to tirerack.com or some other site and see how big is your current tire's diameter is. You can then choose some other 16" tires that have the same diameter or a bit larger/smaller. Larger tires may rub at full lock and smaller tires have shorter rolling distant and could cause the odometer to read incorrectly.
I just got some 31" Falken S/TZ04 on my truck and they are very quiet, stiff sidewall but very quiet - either that or my old Wranger Silent Armor were really really loud.
