This morning I topped up my 23x700 tires to about 100 pounds and set off on a 10 mile ride. Within the first mile, something didn't feel or sound right. Then my back wheel started fish tailing. My rear tire had become deflated... not entirely flat, just way low. I pumped it back up with the frame pump and headed back home (1 mile). When I got home, the tire was still inflated. I rode another 3 miles in the neighborhood, and the tire was still has hard as it was when I pumped it up 4 miles ago. Could the tube have fixed itself??
My left brain tells me to change the tube, but that is just such a pain in the butt for me; I always have a very difficult time getting even one side of the tire on and off the rim.