[N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z]

Y: A letter rating for tires to indicate that they are theoretically rated for speeds up to 300 kph (186 mph), as in P220YR15.The next higher rating is Z and the one lower rating is W

yaw: The rotation about a vertical axis that passes through the car's center of gravity.

y-connector: Any connector in the shape of the letter "Y" -- often referring to a hollow unit. For example, the line coming from the windshield washer pump is connected to the bottom part of a "Y" and the two tubes going to the windshield nozzles are connected to the upper part of the "Y". It differs from a T-connector in that the V-shape is straight across.

yellow flag: !!! Definition under construction !!!.

yield strength: Stress in psi at which a specimen assumes a specified limited permanent set.

yoke: [1] The yellow of an egg. [2] A triangular metal piece used to connect the main brake cable with the stirrup cable in a centerpull brake system. Also known as a "saddle" or "pick-up." [3] A bracket or coupling