Roof rack whistling noise

Anyone else get a whistling noise from their kayak rack. I know you can buy a flushing but doesn’t always work. It seems to be a common issue just wondering if I got the wrong rack. It’s a Thule square bar rack on a Jeep Grand Cherokee.

What tune does it whisling? (j/k)    I just turn my music up to deafeat the noise.

Is this with just the bars, or when you have a kayak on the rack? I know that tie-down straps can cause some gnarly noise if they are allowed to buzz in the wind. Putting a twist in them generally helps.

Add a roof rack pad. Common issue with out a pad on them.

yes you'll hear some noise with the square thule bars.  as far as whistling, tape over any openings.  you don't get whistling unless there's some aperture related resonance.  Close hole = no more whistle.
BTW the thule aero bars are indeed much quieter.  There are fairings that help w laminar air flow

Is this with just the bars, or when you have a kayak on the rack? I know that tie-down straps can cause some gnarly noise if they are allowed to buzz in the wind. Putting a twist in them generally helps.

It’s with just the bars on, it’s not the straps.

Add a roof rack pad. Common issue with out a pad on them.

Good idea I will try that thank you.

yes you'll hear some noise with the square thule bars.  as far as whistling, tape over any openings.  you don't get whistling unless there's some aperture related resonance.  Close hole = no more whistle.
BTW the thule aero bars are indeed much quieter.  There are fairings that help w laminar air flow

I wish I knew that before I got the rack. What holes are you referring to?

What tune does it whisling? (j/k)    I just turn my music up to deafeat the noise.

Lol that’s what I’ve been doing but only way I don’t hear it is with Metallica at full blast!

Put the rubber caps on the ends of the bars.

I have round bars that whistle when they're empty. I wrapped a bungee cord around the front bar (in a spiral) to break up the round profile. It worked great. I've since replaced the bungee with a length of  1/4 shock cord which also works great and looks better.

Agree plug the holes on end of bars and noise goes away

I think it’s already plugged

Get a wind deflector and mount it up on the front...

I will look into those appreciate it!