Pediatrician Dr. Jim Sears says that kids who have the coordination to throw and catch a ball, or hop on one foot, probably have the coordination to ride a bike without training wheels.
“There are two ways to do it,” he explains. “You can either raise up the training wheels, or lower the seat, take the pedals off for a little while, and let the kids push [the bikes] along and learn to balance that way.”
Make sure the child’s helmet fits correctly. The brow of the helmet should sit two adult finger-widths above the eyebrows, and the chin strap should be able to fit one adult finger. Make sure the bike is outfitted with reflectors and lights on both the bike and wheels.