can anyone give me suggestions on tires with the greatest traction over roots?
Welcome to BF.
Ask the folks in the Mountain Biking forum. They ride over roots.
My bikes --> 2001 Litespeed Tuscany---2013 Cannondale CAAD 10 2 (5) "Racing Edition"
Life is like a 10-speed bicycle. Most of us have gears we never use. ~ Charles Schultz