Tire Size 305/60r18 in inches

The tire size 305/60R18 is equivalent to 32.4×12.0R18 in inches, meaning the tire has a diameter of 32.4 inches, a width of 12 inches, and is designed for a 18-inch rim.

  • Overall diameter: 32.4
  • Section width: 305
  • Circumference: 101.8
  • Sidewall height: 7.2
  • Revolutions: 622 per mile
  • Rim size: 18

305/60r18 in inches

This Table chart presents a holistic view of measurements in inches and millimeters, allowing for easy comprehension.

FeatureInchesMetric
Tire Diameter32.4823.2
Section Width12305
Rim Height18457
Sidewall Height7.2183
Circumference101.82586.2
Revolutions387 per km623 per mile
Rim Width Range8.5-11.0215.9 – 279.4

How Tall Is A 305/60R18 Tire?

The tire height of the 305/60R18 tire size is approximately 32.4 inches or 823.2 mm. This measurement is also known as the tire’s diameter, which directly affects your vehicle’s ride comfort, fuel efficiency, and handling characteristics.

Taller tires often mean better ground clearance, making them popular for off-road vehicles and trucks.

What Is the 305/60R18 Width In Inches?

The tread width of the 305/60R18 tire size is about 12 inches or 305 mm. The width of a tire plays a crucial role in determining the contact surface between the tire and the road.

A wider tread can offer improved grip and handling, especially in challenging weather conditions.

What Is the 305/60R18 Sidewall Height?

The sidewall height of the 305/60R18 tire size is approximately 7.2 inches or 183 mm. The sidewall height impacts the tire’s overall performance, ride quality, and appearance.

A higher sidewall usually results in a smoother ride, absorbing more road noise and vibrations.

What Is the 305/60R18 Tire Circumference?

The circumference of the 305/60R18 tire size is approximately 101.8 inches or 2586.2 mm. This specification is relevant as it influences the speedometer reading of your vehicle. An incorrect tire circumference could lead to inaccurate speed readings.

What Is the 305/60R18 Revolutions Per Mile?

For the 305/60R18 tire size, there are approximately 623 revolutions per mile or 387 revolutions per kilometer.

This measurement indicates how many times the tire will rotate in a mile or kilometer and is essential for correctly calibrating the vehicle’s speedometer and odometer.

What Is the 305/60R18 Rims Size?

The 305/60R18 tire size, the rim diameter is 18 inches or 457 mm. This tire size can fit wheel rims with widths ranging from 8.5 to 11 inches or 215.9 to 279.4 mm, respectively.

Matching the tire size with the appropriate rim size is vital for optimal vehicle performance and safety.

What Does 305/60R18 Mean?

The term “305/60R18” 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.
  • 60: 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 60, meaning the sidewall height is 60% 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.
  • 18: 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 305/60R18 is a radial tire that is 305 millimeters wide, with a sidewall height that is 60% of the width, and it is designed to fit a 18-inch wheel.

What Is 305/60R18 In Inches?

The tire size 305/60R18 can be expressed in inches as approximately 12 inches wide, 7.2 inches tall in sidewall, and designed to fit a 18-inch wheel rim.

This equates to a tire height of 32.4 inches. The 305/60R18 also has a circumference of 101.8 inches and It completes 622 revolutions per mile.

305/60R18 Equivalent

The tire size 305/60R18 is equivalent with a size of 32.4x12R18 in inches. This correlation is pivotal for precision in tire selection and optimal vehicle performance.

How Tall Is A 305/60R18 Tire?

The height of a 305/60R18 tire, expressed through its diameter, is approximately 32.4 inches (823.2 mm). In short, A 305/60R18 tire size is 32.4 inches (823.2 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 305/60R18 Tire?

The width of a 305/60R18 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 305/60R18 tire size is 12 inches (305 mm) wide.

What Size Rim For 305/60R18?

The size of the rim for a 305/60R18 tire is 18 inches in wheel diameter. In the tire size 305/60R18, the number “18” at the end indicates the diameter of the wheel (rim) in inches that the tire is designed to fit.

Fitment Guide
This table will guide you on which vehicles can accommodate the 305/60R18 tire size. The range of vehicles compatible with this tire size is diverse, from light trucks, SUVs, to certain high-performance cars.

Brand NameModel
FordF-250 [1973-1977]

Replacement Tire Size
Replacement tires have to be within 3% of the total diameter of the original tire size to ensure proper vehicle function. For a 305/60R18, replacement tires should have diameters between 31.4 to 33.4 inches.

Tire SizeOverall DiameterDifference
285/60R1831.5″-2.90%
265/65R1831.5″-2.70%
245/70R1831.5″-2.70%
235/75R1831.9″-1.70%
255/70R1832.1″-1.00%
275/65R1832.1″-1.00%
285/65R1832.6″0.50%
265/70R1832.6″0.70%
375/50R1832.8″1.20%
295/65R1833.1″2.20%
275/70R1833.2″2.40%
325/60R1833.3″2.90%

Our Observation
Based on our examination, the 305/60R18 tire size is versatile, with its broad width and relatively tall stature offering excellent traction and handling.

The suitability of this tire size for various types of vehicles, including SUVs, light trucks, and some performance cars, makes it a popular choice for those seeking balanced performance and comfort.

However, as with any tire size, specific driving conditions, vehicle specifications, and personal preferences should be considered when selecting the most suitable tire.

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