On my ADHX, i swap tires seasonally (until I get another set of wheels). The biggest thing I've come to realize is the steering response on the road comparing 38mm tires at 44 psi to 30mm tires at 60 psi. The steering with the 38's is slower to initiate, and then tips in more quickly after a slight delay. With the 30's, it feels just like a normal road bike. I don't know if this is due to a slight change in trail or the lower pressure and larger/wider tire patch.