After both of the stock tubes on my new bike went flat when I put 100psi into them, I replaced them. I was near my local PBS when my rear tube went flat and because the bike is brand new, they replaced the rear one free of charge. When I got home, I heard a hiss and the front tube went flat. I looked at the holes in both tubes (I kept the flat rear one) and they were in the same place; right where the valve is molded to the tube. I guess this is a sign of cheap tubes.
But I noticed this on the front tire when I was replacing the tube. Is it an okay tire? There are a couple spots on the tire that look like this. The tire is a wire bead Kenda Kadence.