I have a road bike with road tires. I commute on a paved trail that is fairly bumpy through a couple places due to roots pushing the asphalt up.
My problem is that about once every week or two, I have a poke nipple completely loosen and fall inside the wheel. I've had them replaced with brass nipples, but even those will fall out.
Is the bumpiness the cause of this? Should I expect the wheel hold up to this seemingly normal amount of wear and tear? Should I ditch the wheel and buy a new one? What's my best and hopefully most economical choice here?