M
Meighan M
Guest
I had a flat, fixed it, and then the next time I took it out it went flat again (pretty dramatically this time.) I was near a bike shop so I took it in. The mechanic put in a new tube and inflated my tire, but was concerned because he could tell the old tube had been punctured but couldn't find what had done it. I rode about 15 miles on it and it seemed fine, but this morning I found that my tire was flat again. What should I do?