Tire Vocab Sheet

Question 1

The speed at which the part of the tire that is contacting the ground is traveling.

Answer 1

0 mph

Question 2

The name for the up and down action of the tire that results in scalloped tire wear.

Answer 2

Wheel Tramp

Question 3

A piece of rubber vulcanized to the inner liner of a tire to repair a leak.

Answer 3

Patch

Question 4

The combination of both static and couple
imbalance.

Answer 4

Dynamic Imbalance

Question 5

Material applied to the tire bead before installing a tire on a rim.

Answer 5

Rubber Lube

Question 6

Wobble of a part in a side-to-side direction.

Answer 6

Lateral Runout

Question 7

Type of wheel balance measured with the
wheel stationary.

Answer 7

Static

Question 8

A piece of rubber vulcanized into a hole in a tire.

Answer 8

Tire Plug

Question 9

A tire design that has a bulging sidewall when properly inflated.

Answer 9

Radial Tires

Question 10

RMA

Answer 10

Rubber Manufacturers’ Association

Question 11

Approximate pressure increase in a tire as it
warms up?

Answer 11

4 - 8 PSI

Question 12

Wobble of a part in an up and down direction.

Answer 12

Radial Runout

Question 13

The tread depth at which wear bars show up
around the tire tread.

Answer 13

2/32” - 3/32”