Examine the circlip or spring clip on the tire axle or shaft. Locate the two ends with circular holes in them. Depending on the way a circlip is put on, the ends may face in any direction.
Insert a pair of external circlip pliers into the circlip holes. There are two protruding tips on the end of the pliers to insert in each hole. You may need to slightly squeeze the pliers to align each tip in a hole simultaneously.
Squeeze the pliers handles together to release the circlip. As you squeeze the pliers handles, the two jaws of the pliers move apart and decrease tension on the circlip.
Pull the pliers away from the axle or shaft with the circlip remaining on the end of the pliers.
Place one hand on each side of the tire and pull it off. You may need to slightly rock the tire as you pull it toward you to remove it or use a spray lubricant to remove stubborn tires.