What size tires will the Babymaker? 5 years ago Updated The production Babymaker has a 700x28C tire. Tires up to 700x32C should be fine. There may be exceptions for taller tire profiles. It may be possible to fit a 35-wide tire but not recommended. Related articles What is the right e-bike size for me? What are the display’s default settings? Do Superhuman Bikes come with a warranty? Can you charge the bike by pedaling to increase range? How much maintenance does the motor require?