COMBO: Tire Size 16x3.0 + Inner Tube 16x3.0 Fits Electric Bikes, Scooters, e-Bikes, Mopeds, Kids Bikes COMBO: INCLUDES TIRE AND INNER TUBE SIZE 16-3.0 Tire 16-3.0 designed for Electric bikes. Recomended tire pressure 36 PSI (250 KPa) cold. INNER TUBE: 16-3.0 TR87 Valve Stem* TR87 TR-87, Centered short 90 metal stem (10 mm dia)