I toured with 2" wheels (schwalbe big apple) and they were great tires, but definitely tooooooooo wide!!!! Please get something more reasonable unless you weigh 300 lbs with gear. I thought the "all day comfort" would be worth it... but it's better to go faster and take more breaks then peddling with inefficient tires all day long. I'd say 1.5" or less. Have fun!