These were the tires I used on my 2011 West Coast tour, a pair of Panaracer RuffyTuffy tires in a 700×28 size. These tires were designed by Rivendell Bicycle Works (known for their touring framesets) to be the toughest tire for touring and fast tandem use. They use a 2.5mm thick Kevlar belt for flat protection. These tires also feature a checkerboard tread for a fast rolling tire with traction when needed.
These tires have a PSI rating of 90 and I used them with a heavy bike load at 80-85 PSI, which seemed to be just right for me. Along the tour we pretty much rode over everything, from smooth pavement, rough/potholes /road construction that would eat normal road tires up. These tires held up pretty awesome! We even had a few dirt road/trail sections which I made through great with out much traction loss or damage.
At about 1000 miles, I did get one flat in the rear tire from a larger piece of glass that punctured through the tire which we repaired with a tire patch on the inside (see pics) Also about this mileage I was seeing wear in the rear tire (as expected) which wore the tread pattern flat in the center portion (see pics, tire on left was on the rear)
Overall these tires handled anything that was thrown my way, from road conditions including rain which I had no traction problems with. Also going fast downhill kept me planted in corners and never felt wobbly . The only issue I found was wanting these tires in a bigger size!! I would recommend these tires for any touring or commuter looking for a solid tire.