This a tough one! There really are not any rooftop bike racks designed for kid’s bikes at the 16” wheel size, once you get to the 20” wheel size there are few options. I have seen kids bikes mounted to fork mounted rooftop racks like the Yakima Forklift. However, I do not believe this is a convenient solution since kids bike rarely have quick releases on the wheels that make using a fork mounted rack easy.
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