Thoughts on max map size

[ShroudedMist]

What are people's thoughts on what is a good max size for a huge map having 18 civs on it? I'm thinking of making a few maps and wonder about what I should use for size constraints lest I make something too large.

 

[Armed_Maniac]

an earth map 4000x4000

Of course, i would put ALL the civs that are created on this site... Immagine the lag... lol, muwahahahahahahaha

 

[Feet]

I have created a map 89 tiles (X axis) x 178 (Y tiles) tiles which appears to work ok except that parts of the map black out after zooming out a certain amount.

I have a feeling the max tiles you can have on the Y axis is 128 but I will be exploring this a bit more tomorrow.