It is vital to purchase a correctly-sized mini bike, as otherwise it could be dangerous to ride. When it comes to correctly sizing a mini bike, consider the skill level of the rider as well as their height and weight. Skill is important because the bigger and more powerful the bike, the more skill required to control it. All mini bikes come with recommendations from the manufacturer on height and weight limits for riders, so be sure to read packaging and manuals clearly when shopping for a mini bike.