If your helmet visor isn't be polarized, then the polarized sunglasses will be suitable for you. Or if your helmet visor and polarized sunglasses are at the same angle, the polarized sunglasses will be suitable for you,too. Otherwise, the polarized sunglasses are not suitable for motorcycle driver.
Polarized sunglasses are suitable for motorcycle drivers. Only if the polarizations are perpendicular to each other can your vision be blocked. Put on the sunglasses with the helmet every time before start driving. Safety should always be your first concern.