2 flat tires in 5,600 miles of riding tandem (on the roads) in the desert area of Tucson Arizona in one year.
Use the Maxxis Re-Fuse 700x25mm folding tires. Also Panaracer Pasela Tour Guards 700x25mm folding tires have given us same kind of resullts.
We use standard light innertubes and NO tire liners or goop.
Just our input/experience.
Pedal on TWOgether!
Rudy and Kay/zonatandem