What kinda bandwidth should i get for my dedi server that i will be hosting LFS server on?

Max one i can get is like 100gbps but i would need many servers to even take that much bandwidth.

All i need to know that if i will get shitload of guests to the server (30-47) will i need 1gbps one or 100mbps one?

How much traffic would 47 guests driving on the track would possibly generate? (mbps)

There is a neat bandwidth calculator within LFS already, go to Multiplayer -> Start new host.

some rough figures for a full server:

at 6 PPS -> 830 kb/s
at 5 PPS -> 690 kb/s
at 4 PPS -> 550 kb/s

Quote from troy :

There is a neat bandwidth calculator within LFS already, go to Multiplayer -> Start new host.

some rough figures for a full server:

at 6 PPS -> 830 kb/s
at 5 PPS -> 690 kb/s
at 4 PPS -> 550 kb/s

that's without any insim app buttons, or messages