Tires on new cars generally are called mileage saver and have less weight for better gas milage (also less tread). Expect to get about 50k kilometers or less on them. They are cheaper for the car company. If you want quiet tires then name brand are generally going to be better. I get Michelin (130k km) for my nice car because if I break it down the cost of mounting/balancing and road hazard adds to the cost and I would have to pay those fees twice with cheap tires on a car I drive quite a bit and they ride nice. I have another car I don't drive much and on those I buy the cheap tires with a 65k kilometer tread life and they have been great just a bit louder. I have heard that cheaper tires use less natural rubber and that is what can make them louder. I have heard of people when buying a new car negotiating to get better tires to close the deal.
Larry - It's been a while since you bought a car tire as I just bought one on sale at Walmart for $53 and it was their cheapest size tire. With mounting, balancing and tax it was $77 usd. The brand is "Douglas Tire" and they've been great so far.