I was riding my road bike and my pedals locked up and I couldn't spin anymore. I got off the bike to check the gears and chains and while fiddling with them I heard a loud POP and my rear tire popped and kind of tacoed the bike rim. Why did this happen? What did I do and what can I do to prevent this from happening again? I am new to road biking and I absolutely LOVE it!! I just want to learn more so I can no have the fear of going farther away from my house than I can run home!
If you didn't notice any broken spokes, it could have also been that the bead of the tire popped off the rim and caught on the brakes, preventing the wheel from moving and then ultimately dragging on the ground causing a blowout and maybe warping the rim. Once the tube popped, it would no longer be pushing the tire in to the brakes and allowing your wheel to spin freely again.
You almost certainly broke a spoke. Broken spokes are rare on a bike in good condition, but they do happen randomly.
You should carry a spoke wrench so that, in case of a broken spoke, you can loosen the spokes on the opposite side to allow the wheel to turn and get you home. Also, loosening the brake on that wheel (as if you were going to remove the wheel) provides more clearance for a wobbly wheel (though of course it seriously reduces your braking ability).
(But be aware that exotic wheels with fewer than, say, 20 spokes will taco so badly when one breaks that you'll not be able to correct it with a spoke wrench and/or by loosening the brake.)
my rear tire popped and kind of tacoed the bike rim
I guess either:
- the rim sidewall failed (this does wear down eventually, if you're using rim brakes); if sufficiently weakened, the inner tube pressure will buckle the rim outwards, until decompression (or a sharp edge) bursts the tube
- or, the rim was distorted because of a broken spoke (when a spoke breaks, uneven tension pulls the rim out of true), and either:
- the spoke caught in the chain or rear derailleur,
- or the rim distorted enough to foul the rim brakes; if the brake ended up touching the tyre sidewall instead of the braking surface, this would be sufficient to damage the sidewall and again explain the tube exploding