315/20R30 in Inches
Understanding the dimensions of the 315/20R30 tire size in both metric and imperial units of measurement is an essential part of tire maintenance and replacement. Let us take a closer look at every important aspect of the 315/20R30 tire to understand what these numbers represent and how they may affect your vehicle's performance.
- What is 315/20R30 in inches?
- How to convert 315/20R30 to inches?
- How to read 315/20R30 tire size?
- Where to buy new 315/20R30 tires?
- How wide is a 315/20R30 tire?
- How tall is a 315/20R30 tire?
- 315/20R30 tire sidewall height
- What size rim fits a 315/20R30 tire?
- 315/20R30 tire circumference
- How many revolutions does a 315/20R30 tire make?
What is 315/20R30 in inches?
When we convert 315/20R30 to inches, it is equivalent to 35x12.4R30 tire size in the high flotation system. 315/20R30 tires have a diameter of 35" (888 mm), a tread width of 12.4" (315 mm), and can be mounted on a wheel with a diameter of 30" (762 mm). The sidewall of the tire is 2.5" (63 mm), and the tire's circumference is 109.9" (2788 mm). This means a 315/20R30 tire will make 577 revolutions per mile, or 359 revolutions per kilometer.
| Metric | Inches | |
|---|---|---|
| Tire Diameter | 888 mm | 35" |
| Tread Width | 315 mm | 12.4" |
| Aspect Ratio | 20% | |
| Rim Diameter | 762 mm | 30" |
| Sidewall Height | 63 mm | 2.5" |
| Circumference | 2788 mm | 109.9" |
| Revolutions | 359 per km | 577 per mile |
How to read 315/20R30 tire size?
Reading a tire size such as can be broken down into three main parts: tread width, aspect ratio and rim diameter.
315 is the width of the tire in millimeters from sidewall to sidewall when it's fully inflated and not under any load. In this example, the tire is 315 millimeters wide.
20 represents the height of the tire's cross-section as a percentage of its width. It means the height is 20% of the tire's width.
R denotes that tire has radial construction.
30 is the diameter of the wheel that the tire fits on, measured in inches. This tire would fit on a 30-inch wheel.
How to convert 315/20R30 to inches
The 315/20R30 conversion is very simple. There are 25.4 millimeters in an inch. All we have to do is divide tread width and sidewall height by 25.4 to convert to inches.
To convert the tire width to inches, you divide 315 mm by 25.4, yielding a tire width of approximately 12.4 inches. To find the sidewall height in inches, you calculate 20% of the tire width in millimeters (315 mm), convert this figure to inches as before, resulting in a sidewall height of about 2.5 inches. However, to understand the tire's overall diameter, you need to consider the height of two sidewalls and the diameter of the wheel it fits. Therefore, you multiply the sidewall height by 2 and add the wheel diameter (30 inches), giving you an overall tire diameter of approximately 35 inches.
So, when converted to inches, 315/20R30 tire is 12.4 inches wide, 35 inches tall, and fits 30-inch rims.
How wide is a 315/20R30 tire?
Tire width, also known as section width, is a measurement in millimeters that indicates the width of a tire from one sidewall to the other. It is the first number provided in a tire's size specifications. 315/20R30 tire has a width of 12.4 inches or 315 mm.
A greater tire width can increase the tire's contact patch with the road, potentially improving grip and handling. However, wider tires can also increase rolling resistance, which could negatively impact fuel efficiency.
How tall is a 315/20R30 tire?
Tire height, also known as the tire's diameter or overall diameter, is the measurement from the ground to the top of the tire. It's essentially the distance from one side of the tire to the other, passing through the center, when it's correctly inflated and not under load. 315/20R30 tire has a diameter or height of 35 inches or 888 mm.
315/20R30 Tire Sidewall Height
Tire sidewall height, also known as the tire's aspect ratio, is the measurement of the height of the tire's cross-section or the height of the tire from the rim to the tread. It is typically represented as a percentage of the tire's width. 315/20R30 tire has a sidewall height of 2.5 inches or 63 mm.
Sidewall height (also known as tire profile) can greatly affect a tire's driving characteristics. Lower profile tires (30 or 35 series) often provide better handling but can give a harsher ride, while higher profile tires (65 or 70 series) generally provide a smoother ride but with less precise handling.
What size rim fits a 315/20R30 tire?
The rim diameter refers to the diameter of the wheel on which a tire is mounted. It is the distance from one edge of the rim to the opposite edge, passing through the center of the wheel. 315/20R30 tire can be mounted on 30-inch wheels.
The rim diameter is crucial not only for fitting the tire properly but also plays a role in determining the overall performance of the vehicle, including its handling and ride quality.
315/20R30 Tire Circumference
Tire circumference refers to the distance around the outer edge of a tire. It is the measurement of the entire circumference or perimeter of the tire when it is inflated and mounted on a wheel. 315/20R30 tire has a circumference of 109.9 inches or 2788 mm.
How many revolutions does a 315/20R30 tire make?
Tire revolutions refer to the number of complete rotations a tire makes while the vehicle is in motion. It is a measure of the distance covered by the tire. 315/20R30 tire completes 577 revolutions per mile or 359 revolutions per kilometer.
Tire revolutions are often used in various calculations related to vehicle dynamics, such as determining the distance traveled, estimating fuel consumption, or calculating the speed of the vehicle based on the rotation of the tires. Tire revolutions can also be tracked or monitored by certain vehicle systems, such as the anti-lock braking system (ABS) or the vehicle's onboard computer, for various purposes.
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