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Definition

Aspect Ratio -- is the ratio of an object's width to height. Relative to racing, this term is most commonly used for the ratio of a tire's width to the height of its sidewall. For example, a tire with a size code of 225 x 50 means the height of the sidewall is 50% of the tire's width (which is 225 mm).

Glossary of Terms

Below is a list of automotive and road racing terms. Click on any of the letters to go to the start of that section, click on the term to open a window with the definition.

Terms J - R

J K L M N O P Q R

J

terms coming soon

K

terms coming soon

L

loose (handling)

M

terms coming soon

N

terms coming soon

O

oversteer

P

psi and psig
push (handling)

Q

terms coming soon

R

reference points

Terms S - Z

S T U V W X Y Z

S

terms coming soon

T

tactile feedback
tight (handling)
trail braking
toe
turn-in point

U

understeer

V

terms coming soon

W

terms coming soon

X

terms coming soon

Y

terms coming soon

Z

terms coming soon

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