Originally Posted by
Trakhak
Most bike stores everywhere use the cheapest tubes available by bulk purchase. When I worked in bike stores, decades ago, the failure rate of cheap tubes was vanishingly low, which suggested that almost all so-called defective tubes reported by customers represented operator error back then.
I hope that some folk who currently work in bike stores can weight in here to report whether they've seen increased failure rates with their generic tubes.
Most people probably don't run back to the shop where they bought the bike when they have a flat. They buy new tubes and do it themselves or go to some other shop close to where they had the flat and have them fix it.