A group of college students knew they had a quiz on Monday, so on Friday they decided to go party and come back to study on Sunday. Well, they where having so much fun that they called their professor and said they had a flat tire and couldn't be back until Monday night.. the professor said ok, and they decided to go home Monday, study and take the test Tuesday. So they came back and studied but little did they know the professor was onto them. He put them all into seperate rooms and they took their tests, but the last question was a bonus question worth 50% of the grade..the question? : Which tire????