Yeah I guess. I just got stuck tonight, and pushed my bike 3-4 miles through my "wonderful" neighborhood. No patch kit, and was dark to begin with. The only svc station on the way home has no air anyway. Well unless you count that 50 cent POS that hits maybe 45psi on a good day, lol. 45 is better than nothing, but it wasn't a slow leak. I get off after all the shops close, and my wife has the truck until 11 pm. Yes, you can fit a 26x1 3/8 thorn proof into a 27 x1 1/4 tire BTW, lol. Saturday I guess I will get tire liners. Thorn proof tubes are heavy!! The rim felt like it weighed twice as much once it was all back together.,,,,BD