Hello Joop -- I assume you mean between the tires? Are you going to be getting chocks to go between the tires?
I'd think they're all about the same. This link shows something like the standard 3 to 4 inches. Maybe somebody can run out to their driveway and measure any double axle Airstream.
Yes I'm from Holland live in Romania and bought a airstream that has to be transported to Romania. Important is how far the weels are apart over the width of the trailer. To see if it fits on the truck that will transport it.
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