What is the aspect ratio in a tire size notation like 275/70R18?

Tire Ratio Practice

Flashcard
•
Mathematics
•
12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The aspect ratio is the second number in the tire size notation, which represents the height of the sidewall as a percentage of the section width. In this case, it is 70.
2.
FLASHCARD QUESTION
Front
What does the first number in a tire size notation (e.g., 275 in 275/70R18) represent?
Back
The first number represents the section width of the tire in millimeters.
3.
FLASHCARD QUESTION
Front
What does the 'R' in tire size notation (e.g., 275/70R18) indicate?
Back
The 'R' indicates that the tire is of radial construction.
4.
FLASHCARD QUESTION
Front
What is the rim size in a tire size notation like 285/75R16?
Back
The rim size is the last number in the tire size notation, which indicates the diameter of the wheel in inches. In this case, it is 16.
5.
FLASHCARD QUESTION
Front
How do you calculate the circumference of a tire given its diameter?
Back
6.
FLASHCARD QUESTION
Front
If a tire has a section width of 205 mm and an aspect ratio of 65, what is the height of the sidewall?
Back
7.
FLASHCARD QUESTION
Front
What happens to the speedometer reading if you replace factory tires with larger ones?
Back
The speedometer will read lower than the actual speed because the larger tires cover more distance per rotation.
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