Ski racks on factory roof rack? Got bass?

[Elite130]

All,

So I finally put my Thule 6-pair ski rack on my T4R. It is attached to the factory racks with a set of Yakima rack adapters. I noticed as soon as I hit 50 MPH, I start hearing this bass-like vibrating coming from the roof.

Anyone else experience this?

I am going to play with the spacing and location of each crossrail. I was just wondering if anyone else experienced this.

 

[oljedi11950]

Believe like you say it's the placement of crossbars , can't remember if in 4th gen or here about it but had same issue on both mine & I mean they were off by an inch or so . Think there is a notch or mark for the correct place .