The first thing is to remove the tire. We suggest placing a shim in between the brake pads to make sure they don't collapse. It's very easy to accidently hit the brake lever and close them. this makes it very difficult when reinstalling the tire.

Now go ahead and loosen the rim lock bolt.

You will need a valve core remover for this one. Remove the valve core and let all the air out of the tube.

 

Once all the air is out, push down on the inner part of the tire to break the bead and make sure to start with the disk side down. You may need to use a little pressure on this depending on how long the tire has been on the rim. A rubber mallet works good too, just be careful not to bang up the rim too much. Starting at the rim lock use the tire irons to pry up the first bead. Make sure to pry the tire in very small sections. This will save your rim from that clapped out appearance.

After the first bead is over the rim remove the bolts from the valve stem and pull the inner tube out.

Pry the opposite bead over the other side of the rim. Make sure there is a bead on each side of the rim. Next push the rim down inside the bottom of the tire while pushing out on the top of the tire. The rim should now slide out fairly easily.

Check for burs or scratches on the inside of the rim. Rub some steel wool or a light grit sand paper to make a nice clean surface. it's easy to scratch or cut into the rim if your not careful. This can cause fine razor sharp edges which can cut into the tube.

Another trick is to run a layer of duct tape along the inside of the rim. This will also help in making sure you have a smooth surface to work with. Don't forget to poke holes in the tape for the valve stem and rim lock.

It's nice to run a fine layer of talcum powder on the outside of the inner tube. This will enable the tube to slide around fairly easy inside the tire.

Fill the NEW tube just enough so it takes shape and there are no folds or creases. Place the whole inner tube inside the tire.

Spray both sides of the bead with WD-40. This will slide the tire onto the rim.

Try and slide the tire down into the rim as much as possible. Make sure the rim lock is on the outside of the bead and inside the rim.

Start with either side of the rim lock and start prying the first bead onto the rim. After the first side of the tire is on, reach in and slide the tube around until you can align the valve stem and the valve hole in the rim. Now slide the valve stem through and install the bolt. Tight the bolt just enough to keep the tube from moving around

Work on prying the other side of the bead. Make sure to work in small sections. This will help minimize any damage to the rim. If it becomes to tough, turn the tire over and push the other bead as close to the center of the rim as possible. This will give you a little more space to work with. Once both sides of the tire are on the rim, pump it up to around 30 to 40 psi. This should help seat the tire and create a nice bead all the way around. If this does not work try bouncing the tire off the ground a few times. After everything looks good, go ahead and deflate to normal pressure of 11-13 psi.