I had a slow leaking front tire. I would fill it to 100 psi and in 4 to 5 days it would be down to less than 30 psi.
When I removed the tube and checked it in water, I did not see a leak. It must be really small.
I replaced it with a CST 700 x 18/25 model 29117193 made in China that I had purchased from Price Point. I always have 2 or 3 spares.
The last flat I had was also the front at 2808 miles. So I got 2294 miles from that tube. I still have not replaced the back tube yet!
