Up next in Bike Repair & Equipment (32 videos)
Every avid cyclist should know how to fix his bike; learn the basics in this video series.
You Will Need
- Safe area
- Tire levers
Find safe place
Find a safe place off the side of the road or bike path.
Release the brakes. To do this on a road bike, turn the small, tear-drop-shaped lever above the brake caliper upward. On a mountain bike, release the cable by pinching the caliper and remove the cable from the middle.
Have hub clear dropouts
Pull your quick-release lever into the open position, hold the nut on the opposite side, and spin the lever counter-clockwise until you’re able to have the hub clear the dropouts.
For flat front tire ...
For a flat on the front tire, remove the wheel and let the bike stand upright on its front fork.
For rear flat ...
For a rear flat, turn your bike upside-down standing it on its saddle and handlebars. Then move the chain to one side while you move the wheel straight out of the drops.
Remove valve cap & stem nut
On the wheel itself, remove the valve cap and the stem nut (on presta valves).
Remove air from tube
Remove any remaining air from the tube.
Work way around tire
Work your way around the tire with your thumbs, pushing the edge — or bead — up and away from the rim. Do this all away around the edge.
Remove the tire by holding the wheel against your thighs, and working your tire — again with your thumbs — inward and upward away from the rim until the bead has enough slack to come free of the rim.
Pull tire away from rim
Slide your fingers under the loose edge of the tire and pull it away from the rim until the entire edge is off. This will easily enable you to take off the tire.
Removed damaged tube
Remove the damaged tube. You can patch it later, so save it.
Gingerly run your finger on the inside of the tire to make sure there are no remaining objects from the puncture that will continue to damage new tubes. Remove anything you may find.
Inflate new tube
Grab a new tube and inflate it just enough to hold its shape.
Place one bead of tire within rim
Pick your tire and wheel, and place only one bead of the tire back in place within the wheel’s rim.
Insert valve into hole
Find the valve stem hole and insert the valve of your partially inflated tube into the hole.
Continue placing tube around rim
Continue placing the tube around the rim and up into the tire.
Push bead back into rim
At the valve stem, push the loose bead of the tire back into place, then work your way around the wheel from the steam outward, pushing the bead back into the rim.
If you have trouble, remove a little more air
If you have some trouble getting the last bit of bead back into the rim, remove a little more air and try again.
Pump tire/tube to suggested PSI
Pump up your tire/tube to the suggested PSI listed on the sidewall of the tire.
Make sure tire inflates correctly
As you’re pumping air back in, make sure the tire is inflating evenly and that no areas of the bead are coming loose.
Replace wheel onto bike
Replace the wheel onto your bike.
Secure brakes, lever, & chain
Secure your brakes, quick-release lever, and chain.