My Tire Has Slipped Out of of the Rim.Updated a year ago

The edge of your tire is referred to as the "bead." When the bead slips out it is important to reseat it. 

Lift the affected tire off the ground, or remove the wheel from the bike. While there is no weight on the tire, pump up the tire to where it is semi-stiff but can still be moved on the rim. Locate the thin line on the tire that is near the rim's edge(The bead) and adjust the tire on the rim as needed so that the space between the rim edge and the line on the tire is consistent for the whole perimeter on both sides. Then pump the tire the rest of the way up while checking that line on the tire to make sure it doesn’t move inside the rim.