everyone I've asked said that the KM2's are very quiet for a mud tire. I had a 05 Rubicon that came stock with the MTR's and they were pretty noisy to me. You also have to rotate them every 3000miles. I was rotating them every 6000 as my manual suggested, and they still feathered and cupped, and I always ran them at the recommended press. on the door jamb sticker. They get noisier the more they wear.
SOLD-08 Unlimited X, "jeep green", auto, limited slip, hushpower muffler, Aerotech Interceptor gauge,Powerstroke tranny cooler, skidrow evap skid, AFE Pro 7 filter, Teraflex leveling kit, EVO control arm skids, 15x8 Black Rock 909's, 33" KM2's