I have a question: what size ratio do we have in FS2?
In 3ds max I have metric system units and an object from 10 meters looks like 100 meters in the landscape of FS2! 
What is the exact scale? 1:10?
I have a question: what size ratio do we have in FS2?
In 3ds max I have metric system units and an object from 10 meters looks like 100 meters in the landscape of FS2!
What is the exact scale? 1:10?
You can use any scale that you like in 3Ds Max, you just have to pick the right one when you export.
In your case you probably have to lower scale factor by a factor of 10.
I'm using for both, scenery and aircraft generic units and in the system units setup 1 unit = 1.0 meter. Export with scale 10000 and you should be fine.
Cheers,
Kai