2020 2500 crew cab- wind/rumble noise?

[ridgeracing]

Picked up new truck and put a tonneau cover on it next day. So far love the truck. But going down the road 65-70 mph I hear a lot of wind buffering from rear window area, quiet loud. Had a Tundra for past 10 years with bed cover never heard this before. Any thoughts or suggestions? THX

 

[Papa Red]

I have a 2020 2500 and with my sliding rear window open it's quiet. I do not have a bed cover. Posting this just to give you a reference point. Did you happen to hear anything before adding the bed cover? I hope you get it figured out.

Red

 

[RedneckHippy]

Picked up new truck and put a tonneau cover on it next day. So far love the truck. But going down the road 65-70 mph I hear a lot of wind buffering from rear window area, quiet loud. Had a Tundra for past 10 years with bed cover never heard this before. Any thoughts or suggestions? THX

How’s your cab bed alignment. Maybe one side is less blocked by cab?

 

[ridgeracing]

cab-bed alignment seems ok. I installed bed cover following day after I got it, so not sure how it was before cover. Will have to remove it to verify its not cover. Its not a constant noise, it goes up and down and can be fairly loud at times, like wind howling