Changing BuddyPress Avatar size and other specific settings.
Add the following hack (editing as per your need) in your wp-config.php or bp-custom.php file.
define ( ‘BP_AVATAR_THUMB_WIDTH’, 50 );
define ( ‘BP_AVATAR_THUMB_HEIGHT’, 50 );
define ( ‘BP_AVATAR_FULL_WIDTH’, 150 );
define ( ‘BP_AVATAR_FULL_HEIGHT’, 150 );
define ( ‘BP_AVATAR_ORIGINAL_MAX_WIDTH’, 640 );
define ( ‘BP_AVATAR_ORIGINAL_MAX_FILESIZE’, $max_in_kb );
define ( ‘BP_AVATAR_DEFAULT’, $img_url );
define ( ‘BP_AVATAR_DEFAULT_THUMB’, $img_url );
Using this hack you can change your avatar’s specific settings.