Please let us know some details about the type of riding that you are doing/want to do. I would highly suggest against going with a wider board based on the size that is written on your boot. Your foot is 27 cm and that is all that the board will respond to. With the boot there are only two possibilities of what is going on. The first is that the boot is labeled differently from an accurate fit. The second is that it is too big. In either case you do not want to buy a wide board (or wider board).