In March, I purchased a 2017 Tesla Model S 100D with 19 inch wheels, and OEM tires from Goodyear.
I traded in a 2014 P85 with 19 inch wheels with Michelin tires. The car was so silent that my wife had congratulated my on my insightful purchase in 2014. However, when we got on the highway with the new 2017 (March) 100D, she asked me to go back to the dealer in Needham, MA and ask for my old car back. The tires on the 19 inch wheel were unacceptable. They caused so much road noise that I couldn't carry on a normal conversation with my wife while driving. I measured the road noise at 74-80 decibels at 65 mph.
I called the dealer within a week and asked to buy my old Tesla and trade in the new one. My request wasn't taken seriously, and I noticed that my old Tesla was no longer in inventory.
I read on the forum that I should try decreasing the tire pressure. I decreased it to 44psi and then to 43psi. I got a more muffled sound, but still couldn't converse. I read further on the forum that the Goodyears were new to the model S, and that they used a foam insulation to "reduce" road noise.
Service in Watertown, MA sold me a new set of Michelin MMX tires and the Tesla is great again, with road noise acceptable, 65 decibels at 65mp, and my wife not pressuring me about being stupid for trading in a great car for a lousy car.
I have no idea why Tesla started equipping new model S with Goodyear tires, but apparently the person that did the road tests wasn't very discerning or critical. Tesla should remedy this problem before their sales start dropping.