Hello everyone! I am new here and kind of a beginner at mountain biking. I have this problem with the tires on my mountain bike. About every month or so of regular riding the innertube will break in the same spot consistently. It always breaks right at the base of the valve. Whenever I get a flat I take off the tire and look at the inner tube and the base of the valve is always split like the whole valve is almost severed off, not completely but at least like one third to one half of the circumference of the rubber at the base of the valve is split open.
I wonder if anyone one here knows why this always happens and what could be the cause of it. Any help or insight would be greatly appreciated.