We have been sitting on these photos for a week and the information for months being unable to release or let on after market tires are coming.

Hostile Hobby (Maybe they will change their name to Hostile Racing)
Here are some photos of tires that are great for loamy surfaces (Beware gravel pits will take this tread off in minutes) For a loamy surface though the larger step catches the softer dirt while the smaller pin digs into the harder surface below..