What would cause a noise from the rear end of a stratus

Wheel bearing? If you turn left and it gets louder. It is the right wheel bearing. And vice versa.

it could be center bearing, if its going bad it can also cause a vibration, make sure you have sufficient fluid in the diff as well, you can also get a noise and vibration from collapsed motor or trans mounts

Does it get louder as you go faster? This could be a bad wheel bearing. Go for a drive on a safe street or road with no traffic. Drive at 40 mph and now put the vehicle in neutral and shut the engine off. If you still have this noise it is probably a wheel bearing. Try to determine which corner the noise is loudest to find which wheel bearing is making the most noise. You may need to lift all 4 wheels off the ground and test to find the noise. Be careful and use jack stands. I hope this helps. Rod

You have a worn out wheel bearing. Nothing else has this symptom.

Sounds like a wheel bearing .

do u have a smooth transfer of gears in your ******? my explorer sounds like it only at about 30 to 40 mph. could be your hub bearing assembly on the rear...but if it is that, then usually it will be louder as the car goes faster.

Check for the Universal Joint wear in the driveline. If it gets louder and louder and the clicking doesn't seem to go away on acceleration on the highway, then it's time to replace it.

Do you hear it for a second when you just turn key to on & not start?

C V joints are bad.

This sounds like ring and pinion noise, new bearings and a gear set will cure the problem.