It will become more difficult as you get more of the tyre back inside the rim, but use your thumbs to tuck all of it under if possible. Begin at the valve stem again, and use both thumbs to push the edge of the tyre back onto the rim. Start back at the valve stem hole, insert the valve stem, and work your way around the tyre, tucking the tube under the entire way around.ġ1. This will make it easier to place in the wheel.ġ0. Take your replacement tube, and inflate it with enough air to give it just a bit of shape. Run your fingers along the inside of the tyre very carefully.ĩ. NOTE: Sometimes glass or other small sharp objects can cause a flat tyre. Remove anything that could immediately cause another flat. Gently run your fingers through the inside of the tyre, feeling for anything sharp, and visually inspect the outside of the tyre for anything still stuck in the rubber. If you’re fixing a flat, check for the source of the flat before replacing the tube. Pull the old tube out of the tyre, beginning at the valve stem (the part where you connect a pump).Ĩ. Once you have a few inches over the rim, work your way around the rest of the wheel to completely remove one side of the tyre from the rim.ħ. A few inches away from the first tyre lever, use the scooped side of your second tyre lever to work more of the tyre over the edge. Attach the hooked end of the tyre lever to the nearest spoke.Ħ. Once the wheel is off the bike, start near a spoke and use the scooped end of your tyre lever to grab the edge of the tyre and work it over the edge of the rim. If your bike has thru-axles, you will need to unthread the axle until you can easily pull the entire axle out of the frame. Set the bike down on the non-chain side.Ĥ. The wheel should easily come out as you tilt it away from the frame. Hold the wheel down with one hand and lift up on the bike with the other. Stand on the non-chain side of the bike and open the quick release. If you have v-brakes, push both sides in to remove pressure from the brake cable, and disconnect it. If you have caliper (rim) brakes, use the lever on the side to loosen the brakes. Keep the bike right side up, and shift the into the most difficult gear at the back (smallest cog).Ģ. The process is the same for a front tyre, just slightly easier since you don’t have to deal with the chain and gearing while removing the wheel.ġ. These instructions are for repairing a rear flat tyre.
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