Tire Size 305/70r17 In Inches


305/70r17 In Inches

The tire size 305/70R17 is equivalent to 33.8×12.0R17 in inches, meaning the tire has a diameter of 33.8 inches, a width of 12 inches, and is designed for a 17-inch rim.

305/70r17 In Inches

For a thorough understanding of tire features and metrics, refer to the following table, which provides comprehensive information on their breakdown.

Tire Height860 mm33.9″
Tread Width305 mm12″
Rim Diameter431.8 mm17″
Sidewall Height214 mm8.4″
Circumference2700.4 mm106.4″
Revolutions370 per km595 per mile

Tire Size Breakdown
The 305/70R17 tire size can be broken down into three parts:

  • 305 – This number represents the tire’s tread width in millimeters (12 inches). It indicates how wide the tire is, which affects traction and handling.
  • 70 – This is the aspect ratio, which represents the sidewall height as a percentage of the tire’s tread width. In this case, the sidewall height is 70% of the 305 mm tread width, which equates to 214 mm (8.4 inches).
  • R17 – This denotes the tire’s construction (R for radial) and rim diameter in inches (17 inches).

Replacement Tire Size
Ensuring that replacement tires have an overall diameter within 3% of the 305/70R17 tire size is crucial for proper performance and compatibility.

Tire SizeOverall DiameterDifference
255/80R1733.1″ (840 mm)-2.3%
295/70R1733.3″ (846 mm)-1.6%
285/75R1733.9″ (860 mm)0%
275/80R1734.3″ (872 mm)1.4%
295/75R1734.4″ (874 mm)1.6%
315/70R1734.4″ (874 mm)1.6%

Dimensions & Specifications

  • Tire Height: The overall diameter of the 305/70R17 tire is 860 mm (33.9 inches). This is the total height of the tire, from the ground to the top of the tread. It affects ground clearance, vehicle handling, and off-road capabilities.
  • Tread Width: With a tread width of 305 mm (12 inches), this tire offers a wide contact patch with the road, providing good traction and stability, especially on wet surfaces or loose terrain.
  • Rim Diameter: The 305/70R17 tire fits a 17-inch wheel (431.8 mm). This size is common for trucks, SUVs, and off-road vehicles, as it offers a good balance between on-road comfort and off-road capabilities.
  • Sidewall Height: The sidewall height of this tire is 214 mm (8.4 inches). A taller sidewall can provide a smoother ride and better off-road performance, as it allows the tire to flex and absorb impacts more effectively.
  • Circumference: The circumference of the 305/70R17 tire is 2700.4 mm (106.4 inches). This measurement is essential for calculating speed, as the tire’s rotation determines the vehicle’s speed relative to the ground.
  • Revolutions: This tire size completes 370 revolutions per kilometer (595 revolutions per mile). This number is important for determining the accuracy of your speedometer and odometer, as these devices rely on tire revolutions to calculate speed and distance traveled.
  • Tire Construction: The 305/70R17 tire features radial construction (denoted by the “R” in the size). Radial tires have plies that run perpendicular to the direction of travel, providing better handling, longer tread life, and improved fuel efficiency compared to bias-ply tires.

What Does 305/70R17 Mean?

The term “305/70R17” refers to the size and specifications of a tire. Here’s a breakdown of what each part of the designation means:

  • 305: This number represents the width of the tire in millimeters. In this case, the tire is 305 millimeters wide from sidewall to sidewall.
  • 70: This number indicates the aspect ratio, which is the ratio of the tire’s sidewall height to its width. In this example, the aspect ratio is 70, meaning the sidewall height is 70% of the tire’s width.
  • R: This letter stands for “radial,” which is the most common type of tire construction. Radial tires have ply cords that run perpendicular to the direction of travel.
  • 17: This number represents the diameter of the wheel, in inches, on which the tire is designed to fit.

So, in summary, a tire with the designation 305/70R17 is a radial tire that is 305 millimeters wide, with a sidewall height that is 70% of the width, and it is designed to fit a 17-inch wheel.

What Is 305/70R17 In Inches?

The tire size 305/70R17 can be expressed in inches as approximately 12 inches wide, 8.4 inches tall in sidewall, and designed to fit a 17-inch wheel rim.

This equates to a tire height of 33.8 inches. The 305/70R17 also has a circumference of 106.2 inches and It completes 596.5 revolutions per mile.

305/70R17 Equivalent

The tire size 305/70R17 is equivalent with a size of 33.8x12R17 in inches. This correlation is pivotal for precision in tire selection and optimal vehicle performance.

How Tall Is A 305/70R17 Tire?

The height of a 305/70R17 tire, expressed through its diameter, is approximately 33.8 inches (858.8 mm). In short, A 305/70R17 tire size is 33.8 inches (858.8 mm) tall.

The height of the tire is subject to slight variations, determined by both the brand and model of the tire, in addition to the amount of air pressure it holds.

How Wide Is A 305/70R17 Tire?

The width of a 305/70R17 tire is 12 inches (305 millimeters). The first number in the tire size (305) represents the tire’s nominal width in millimeters from sidewall to sidewall when mounted on a specified width wheel. Therefore, the 305/70R17 tire size is 12 inches (305 mm) wide.

What Size Rim For 305/70R17?

The size of the rim for a 305/70R17 tire is 17 inches in wheel diameter. In the tire size 305/70R17, the number “17” at the end indicates the diameter of the wheel (rim) in inches that the tire is designed to fit.

Our observation
Our observations of the 305/70r17 tire size suggest that it is a robust and sizable tire, offering a wide tread and significant sidewall height. This combination makes it an excellent choice for vehicles that require more traction and stability, such as trucks, SUVs, and off-road vehicles.

The radial construction ensures durability and control, vital for vehicles tackling different terrains. Additionally, the large overall diameter and circumference contribute to a lower number of revolutions per mile, implying less tread wear over long distances.

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