I would recommend a 32 mm tire that is a compromise between weight and durability. I have used 32 mm Schawlbe Marathons and 32 mm Continental Gatorskins. My preference is the Continental tire. IMO with the weight you will have, the 32 mm would be preferable. I've never had a reason to go wider than that.

My wife and I crossed the U.S. on 28 mm Gatorskins, and were pleased with their performance, but the 32 mm tire is a little bit more comfortable.

She is getting ready to tackle a 5-mile downhill through a construction zone on 28 mm Gatorskins.


On a 3 month European tour part of our route took us over 400 miles of dirt and unsurfaced roads and trails. We also encountered about 500 miles of cobbles and sette stone roads and trails. We were using just the plain old 32 mm Schwalbe Marathons, and had only 4 flat tires for the whole trip. Changing out a tube is not a big deal, and I'd rather have a little lighter and livelier tire than worry about them being bomb proof.
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I'd rather carry a light weight folding spare tire than run super heavy tires, no matter how tough they are. The total weight is about the same.
Twenty-eight mm on the left, 32 mm on the right