The BMW 225xe Hybrid has a maximum charge rate of 16 amps. The 16 amp cable is recommended as its easy to use and cost effective. The next generation cars will all charge at 32 amp, the 32 amp cable will give you future proofing. Cables automatically switch between 16 and 32 amps, enabling 16 amp cables to be safely used on a 32 amp charging station and vice versa.