Personally I would split it into 3 bits (10gb each).

Too many people are creating tiny torrents, and that is a PITA when you are trying to get an entire set/collection.

Also, remember that every torrent uses tracker resources nearly equally just sitting on the system.  Then of course you have to add in traffic.

Hey, guys
I have some OF profiles siterips and I'm willing to share them. But I've been wondering if a large content folder should be split into smaller parts to facilitate sharing. Suppose I have a 30 GB of the same content, should I split it in 2 or 3 different torrents? Would it be better?

I coulnd't find information about this in the forum.

Split it up as much as you can for many reasons.  A DMCA takedown request for one one video would take down the entire torrent, no one will ever spend the seed bonus points to make it freeleech, few people download a large torrent and seed it for long, etc.

It would make sense to upload the files from each OF profile in a separate torrent.

One thing I would suggest is that you show what the individual files contain:  A quick way of doing that is to post a screenshot of a file directory, showing thumbnails from each file (see attachment below).

Thank you for sharing your material.