Maybe it was just me but I have plenty of confidence on the road but with 15psi I was riding slower than your grandmother, I just wasn't game to ride at speed I hated it squirming all over the place, perhaps my weight has something to do with it.

 

Now I have 700 miles on my bike and the rear tread is looking extremly low, to the point where I'm kinda skeptical about riding it. The street diminished the rear tire pretty good. Now its on to buy a new tire, so many choices...