Purchased my Traveler May 2017 in Tucson AZ. Brought back to Nebraska and rode about 200 miles and the tires were showing tubes. I sent pictures to TerraTrike and they responded with the alignment issue, plus making sure quick release levers on hinge points were snug. Since then I have around 2500+ miles on the trike. Part of my weekly checklist is to verify alignment and hinges. However, I am on my 4th set of front tires since purchase. 1st set was factory, didn't last long because of alignment. The 2nd set were some Kenda Basic and they did a bulk of the 2500+ miles. The 3rd set were the factory tires TT sent out. I logged about 900 miles on them. They still have a few miles, (definitely showing wear) but I swapped them out (plus the rear, it was still the original) for some Schwalbe Marathon HS Wire Bead Tires. I ride on hard surfaces for most of my daily treks. I would like to think 2000-3000 miles/set of front tires would be minimum. Maybe asking too much.