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-   -   Roof rack cross bar wind noise (http://www.jeepgarage.org/f107/roof-rack-cross-bar-wind-noise-19935.html)

krpatrick 03-08-2011 09:49 AM

Roof rack cross bar wind noise
 
I have seen several posts on this forum concerning the OEM Mopar roof rack cross bars on the WK2, including an excellent write-up on installing them (http://www.jeepgarage.org/f156/roof-rack-cross-bar-mounting-process-16025.html). But nobody seems to be complaining much about wind noise. In fact, most people praise them as aerodynamic. I had the dealer throw in the cross bars when I bought my Laredo two weeks ago and finally go around to installing them over the weekend. The wind noise is unbearable! It's the loudest whistling noise you can imagine at any speed over 35 mph. I have triple-checked that the bars in the right position (front vs. back) and that the correct edge is facing forward, according to the stickers on the bars. I have tried full-spread positioning and the owner's manual recommendation of placing them 24 in. apart. No luck. My last attempt is going to be putting the rear bar as far back as possible and then moving the front bar towards it in small increments to see if there's a position where the noise goes away or is at least tolerable. If that doesn't work, I'll just remove them and put them on only when I actually need them (i.e., ski trips). Anyone else dealing with this? I can't believe Mopar would make such an unusable item.

mrpositraction 03-08-2011 09:57 AM

Re: Roof rack cross bar wind noise
 
I don't run mine all the time because of the wind noise. Mine doesn't sound as loud as yours, but you can definitely hear the wind flowing around them....enough I don't run them all the time. In fact, I can put a fully loaded cargo bag on top and it doesn't make anymore noise than when running the bars empy.

I have always positioned mine as far forward for the front and as far back for the rear. Only had whistling/resonating under cold temperatures.

Cperez 03-08-2011 10:16 AM

Re: Roof rack cross bar wind noise
 
Welcome, krpatrick!

I have to say that wind noise has not been an issue at all for me. Caveat: I live in the DC area and got my WK2 in late December, so haven't been driving around with the sunroof open or even vented, nor have I had my windows down enough to notice. Are you hearing it when you're all buttoned up or when windows are open?

You covered all the things I would have asked about, especially checking whether they were installed in the proper orientation. Hmmm...

krpatrick 03-08-2011 10:58 AM

Re: Roof rack cross bar wind noise
 
Quote:

Originally Posted by Cperez (Post 371426)
I have to say that wind noise has not been an issue at all for me. Caveat: I live in the DC area and got my WK2 in late December, so haven't been driving around with the sunroof open or even vented, nor have I had my windows down enough to notice. Are you hearing it when you're all buttoned up or when windows are open?

I don't have a sunroof (just the base Laredo) and it's not warm enough in NC this week to have the windows down. The noise is coming straight through the roof!

krpatrick 03-08-2011 11:08 AM

Re: Roof rack cross bar wind noise
 
Quote:

Originally Posted by Cperez (Post 371426)
You covered all the things I would have asked about, especially checking whether they were installed in the proper orientation. Hmmm...

I wonder if there's any chance the cross bars were labeled wrong at the factory? When viewed from the side, the cross bars look like an elongated teardrop. On mine, the fat end of the teardrop faces the middle and the thin end faces out. So, when they're mounted, they're a mirror image of each other. Does that sound right?

fireguy 03-08-2011 11:27 AM

Re: Roof rack cross bar wind noise
 
I live up here in MA. I put a set on my Laredo X 2 weeks ago (no sunroof). I have done driving around town and also highway driving for 40+ miles at highway speeds and hardly notice a difference. This weekend I'll be putting ski racks on and travelling to VT. I expect to get more noise then, but with the base racks I would have to say the increase in sounds is negligible at best. Id think about the previous post that perhaps they were labeled backwards. Good luck.

Cperez 03-08-2011 11:48 AM

Re: Roof rack cross bar wind noise
 
Quote:

Originally Posted by krpatrick (Post 371464)
I wonder if there's any chance the cross bars were labeled wrong at the factory? When viewed from the side, the cross bars look like an elongated teardrop. On mine, the fat end of the teardrop faces the middle and the thin end faces out. So, when they're mounted, they're a mirror image of each other. Does that sound right?

Anything is possible. Mine are installed so that the trailing edge on both front and rear is the wider, sharper-edged side. Again, this side faces the rear just like in the photos from the install thread. It sounds like yours aren't installed this way at all...they should not be installed in mirror fashion.

I was meticulous about installing mine and double-checked everything and I have no noticeable wind noise. The good news for you is that it should be pretty simple to fix this! :thumbsup:

Let me know if you need more pics to explain.

SvenskaJeepGuy 03-08-2011 11:53 AM

Re: Roof rack cross bar wind noise
 
they cost you 20% more fuel usage on the highway, take them off if you are not using them

Cperez 03-08-2011 12:00 PM

Re: Roof rack cross bar wind noise
 
1 Attachment(s)
This is my front crossbar shot from the driver side looking down. The rear crossbar is installed in identical orientation. It doesn't have a Mopar sticker, but that same fat edge is the trailing edge on the rear bar.

One other thing to check is that on the passenger side of each rail, the load capacity sticker should be on the trailing edge of the bar.

calmurphs 03-08-2011 12:01 PM

Re: Roof rack cross bar wind noise
 
Our OEM roof cross bars whistled noticeably the first day we put them on, but by the 3rd day (right when we we going to take them off), it miraculously stopped. They have been on for 2 months now without a sound. We have no idea why it stopped, but we're not complaining!!

Cperez 03-08-2011 12:07 PM

Re: Roof rack cross bar wind noise
 
Quote:

Originally Posted by SvenskaJeepGuy (Post 371489)
they cost you 20% more fuel usage on the highway, take them off if you are not using them

Are you sure that the economy hit isn't more like 2% SvenskaJG?

Seems like it would take a huge sail-like structure to create that kind of penalty (20%).

krpatrick 03-08-2011 01:02 PM

Re: Roof rack cross bar wind noise
 
Quote:

Originally Posted by Cperez (Post 371495)
This is my front crossbar shot from the driver side looking down. The rear crossbar is installed in identical orientation. It doesn't have a Mopar sticker, but that same fat edge is the trailing edge on the rear bar.

One other thing to check is that on the passenger side of each rail, the load capacity sticker should be on the trailing edge of the bar.

My front cross bar is definitely mounted reverse of yours. I'll try switching it around this evening and see if that helps. Thanks for the tip!


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