1. Wobble - Potentially dangerous unexpected side-to-side movement of the front or rear wheel at speed. Wobbles need to be troubleshooted and fixed asap.

2. Runout - The measure of the out of roundness of the tire causing a vibration that cannot be balanced.

3. Tire, Tyre - Rubber, Sneaker. The round thing made of rubber your motorcycle moves on.

4. Tire Cross Section - 1. The shape (profile) of the cross section of an inflated tire on a rim.  What a tire would look like if you sliced through it.

5. Tire direction - Unlike car tires, motorcycle tires have an arrow on the sidewall showing the direction of travel. It is important to mount motorcycle tires correctly and the tire direction arrow is correctly oriented in the direction the tire will spin the majority of the time.

6. Tire Profile - The lateral curvature of the tread of an inflated tire, usally expressed as a comparison of height to width.

7. Tire Warmers - Real racing tires work best once they’ve attained their high operating temperatures. Electric “blankets” wrapped around the wheels help speed this
process, allowing the rider to start going fast sooner.

8. Traction - A tires ability to grip the road.

9. Wear Indicator (see also Wear Bar) - On drum brakes the wear indicator is a scale on the outside housing of the drum. The brake rod (moving part) has an arrow that matches up with the scale on the drum. To check wear the rider is off the bike and presses down on the rear brake petal, the arrow will move within the range on the wear indicatior on the drum to note if replacement of the drum brakes are necessary.

10. Contact Patch - The area of your tire that actually contacts the road while you ride. Also called "foot print".

11. Ding - A nick or scratch in the paint.

12. Endo - 1. The art of stopping a motorcycle and having the rear wheel lift off the ground, a reverse of the catwalk. Also called a stoppie. (see photo above) . 2. Going back over front. 3. Pitching the rear of the motorcycle over its front, end over end.

13. Runout - The measure of the out of roundness of the tire causing a vibration that cannot be balanced.