This is what my avatar page says Note: The maximum size of your custom image is 160 by 80 pixels or 100.0 KB (whichever is smaller).
My custom note is different than AZflycaster's. 160 x102 pixels . But I no longer have a premium account so the 160 will not work but the 80 still stands as a limit. (I think)
Nope the avatar will not go bigger than 80 pixels. Moderators please try uploading to my custom avatar, you can suprise me with whatever you like.
I noticed even when my enhanced account was in force that the regular accounts would have a larger avatar than I could get in height. Try randomly clicking on various members' avatars and you will see their dimensions after a right click on properties. Mine never can be loaded more than 80 pixels high regardless of my sizing them at 102 pixels high as the other avatars.
I plan to reup when the calendar and photo gallery and the rest works.