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It depends a lot on the exact size and shape of the trailer. The ones that seem to go over the easiest are those that are parked in very exposed areas like a ridge of a hill or a wide open treeless area taking a direct hit on the side walls.On the other side, if the trailer is anchored or tied down on the corners, they will survive quite a bit more. Maybe gusts up to around 80 mph. Anything above that, they have a rough time surviving intact if the wind hits them from the side.
Also fiberglass-laminated units are more resistant to flying projectiles than aluminum siding trailers.
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It is an Airstream trailer with rounded corners, so I've read online 2 years ago that they sustain hurricane winds, but I forgot how many mph winds.
Thanks.
I am aware of your trailer, it weighs around 4,550 lbs unloaded which is not allot of weight. There are allot of variables taken in to account but I would really be concerned of a sustained wind of 85-90 and I would tie this down if you can. Also very important that the winds are not hitting the side but the rounded corners.. I have seen regular heavier travel trailers blow over at around 65 mph and some that say the have sustained much higher winds. IF this is not helpful I can repost your question for another RV expert? IF you are in a area that is going to be affected please take care.
RV Mechanic
10 Years RV experience... Cummins North West, Country Coach, Monaco Coach, Vendor certs.