For many people a good brake dust shield is just not enough. If you want to maintain the glossy finish of new wheels, you may want to consider investing in a product like a wheel mist, or other wheel finishing product that will keep brake dust from bonding to your wheel. You should be careful because some of these products can corrode your wheel's finish which is why most people will only invest in a brake dust shield and engage in frequent car washing. Still, do some research online about the wheels on your make and model and see what people recommend. It could be that the right product is out there waiting for you and why should you suffer dusty wheels needlessly?