The noise is a low frequency thump going over anything especially gravel roads , I find there is a constant rumble in the cabin that annoys me for a new vehicle. My wife does not hear it which makes me think, is it my sensitive hearing? I self diagnosed myself with hyperacusis. I know Jeeps are made to off road and stiffer suspension, but I owned a Jeep Liberty 2002 from new and loved it which I thought would getting the "Grand" a wise decision, but no I actually hate it. I bought 18" tires to change things up from 20". placed insulating matting under my floor mats and trunk mat. no help.., sorry but, next purchase is not a JeepNoisy? How so?
All vehicles have more or less road noise depending on the make, tires/tire wear, bodyh noise dampening and the terrain/roads they're driven in.
Some roads are just plain noisy no matte the vehicle.
Don't know what your expectations are but most Jeeps by definition are designed to be driven off road.
Meaning a stiffer suspension has to be designed to take off road bumps, rocks and ruts.
A Jeep is not a smooth Cadillac ride.
First of all Jim you are correct in that noise cancelling systems monitor road noise frequencies and their amplitude then instantly blast the same frequency and amplitude level 180 deg. out of phase.Active noise cancellation works most effectively on low to mid frequencies...the "noise sound" is captured and retransmitted out of phase which effectively cancels it out, for the most part. (There are some folks who have physical issues with using active noise cancellation, however) The effect will not likely be "dramatic" when the system is working properly, but the overall background noise level while toodling along should be lower than without the system. Please note that this system is not implemented/available on all JGCs...