Choosing the right bike size for a 10-year-old depends on their height and inseam. Kids bikes are sized based on wheel diameter, not frame size. The following are some general guidelines for bike sizes based on wheel diameter, age, and inseam:
- 20-inch wheel: Fits kids aged 5 to 8 years old, with a height of 40"–4'5" (120–135 cm) and an inseam of 22–25" (55–63 cm) .
- 24-inch wheel: Fits kids aged 8 to 11 years old, with a height of 4'5"–4'9" (135–145 cm) and an inseam of 24–28" (60–72 cm) .
- It's important to note that these are general guidelines, and children grow at different rates. To ensure the best fit, it's recommended to measure the child's height and inseam and compare them to the bike size chart for children provided by the bike manufacturer.
Therefore, a 10-year-old child with a height of 4'5"–4'9" (135–145 cm) and an inseam of 24–28" (60–72 cm) would likely fit a 24-inch wheel bike.