I don't care what degree you have, its common sense. Both brakes and tires stop the car but brakes are the main force that stops the car. We can go on and on just stop it with your " I'm smart degree crap".
First you slap disagreed with him and said brakes stop the car. Now you say both. So which is it? Which would you rather have with drum brakes? Bald bias ply tires or good radials?