Unfortunately I don't have any videos or sound recordings. Noise level is relative, if you ask overlanding folks, they will say "what noise?" with their roof tent, jerry cans Pelican boxes and trail tires roaring but if you are coming from unibody crossovers, then it will sound obtrusive. If possible, maybe go back to your dealer and ask to test drive a GX with cross bars or rack installed to hear it for yourself?
If you are not in a rush to get a rack for this winter's snowsport season, better to wait and see what Yakima and Thule has in store for cross rail for GX550/LC250? Also if you go to Rack Attack or similar stores, they normally have a very good return policy. Thule/Yakima run 20-25% sales a few times a year if you can wait it out.
If you are going for a full platform rack, I won't pick the OEM platform rack as a first choice, it is not full size, only has 4 cross bars for securing items and due to having only 4 mounting points, the weight limits are not as high as a full rack such as Wescott Prinsu etc. At the moment, we don't know who made the platform rack for Lexus and Lexus doesn't sell any OEM mounting accessories, if you need brackets, etc more of trail and error, buy third party try and hope it works.
If you are going with cross bars, I have had great experience with Thule, very quiet with the aero/raised sections for wind noise reduction. And the Thule ones will be much better quality than OEM. Which snowboard attachments are you currently using?
If you are not in a rush to get a rack for this winter's snowsport season, better to wait and see what Yakima and Thule has in store for cross rail for GX550/LC250? Also if you go to Rack Attack or similar stores, they normally have a very good return policy. Thule/Yakima run 20-25% sales a few times a year if you can wait it out.
If you are going for a full platform rack, I won't pick the OEM platform rack as a first choice, it is not full size, only has 4 cross bars for securing items and due to having only 4 mounting points, the weight limits are not as high as a full rack such as Wescott Prinsu etc. At the moment, we don't know who made the platform rack for Lexus and Lexus doesn't sell any OEM mounting accessories, if you need brackets, etc more of trail and error, buy third party try and hope it works.
If you are going with cross bars, I have had great experience with Thule, very quiet with the aero/raised sections for wind noise reduction. And the Thule ones will be much better quality than OEM. Which snowboard attachments are you currently using?