Mountain bike wheels have to be strong, light, stiff, flexible, and above all else round. Every bump in the trail is trying to stop them from remaining this way. Sometimes the bumps win.
Spoke breaks Metal fatigue or big sticks can be to blame. Straighten up the wheel and ride on. |
Ripped tire sidewall Sharp rocks can gash tires. Then the tube splurges out like a hernia. Not conducive to riding. |
Flat tire, no spare tube This should be enough to teach you to bring spares. However, you can use what you have or natural resources to ride out. |
Taco The most descriptive term for a bike boo boo – the trail ate your wheel for lunch. |
Hub loose You may not realize that your hub is loose for some time. However, your riding will probably feel “off” – cornering becomes sloppy and descents feel sketchy. |
Rim worn through Rims give up at odd times, like when you are just riding along, or when the bike is sitting on your car after a ride. |