Tire Size 255/75r15 in inches

The tire size 255/75R15 is equivalent to 30.1x10R15, boasting a diameter of 30.1 inches (763.5 millimeters), a section width of 10 inches (255 millimeters), and a wheel diameter of 15 inches (381 millimeters). It is approved to be mounted on 6.5-8.5 inches (165.1 – 215.9 millimeters) wide wheels. This size offers a unique blend of performance and reliability that makes it a popular choice for many vehicle owners.

255/75r15 in inches

Feature Inches Metric
Tire Diameter 30.1 763.5
Section Width 10 255
Rim Height 15 381
Sidewall Height 7.5 191.3
Circumference 94.4 2398.6
Revolutions 417 per km 673 per mile
Rim Width Range 6.5-8.5 165.1-215.9

How Tall Is A 255/75R15 Tire?

The Tire Height of the 255/75R15 tire size is 30.1 inches (763.5 millimeters). This refers to the total height of the tire when mounted and inflated on its intended rim size. The height, also known as the tire’s diameter, is a critical factor that impacts the vehicle’s overall handling, ride comfort, and fuel efficiency.

What Is the 255/75R15 Width In Inches?

The tread width of the 255/75R15 tire size is 10 inches (255 millimeters). This width measures the tire’s broadest point from sidewall to sidewall. This measurement impacts tire stability and performance, with wider tires providing better grip, especially during high-speed turns.

What Is the 255/75R15 Sidewall Height?

The sidewall height of the 255/75R15 tire size is 7.5 inches (191.3 millimeters). This is calculated as a percentage of the tire’s width, known as the aspect ratio. Here, the ’75’ denotes the aspect ratio, indicating the sidewall height is 75% of the tire’s width. Sidewall height influences ride comfort, with taller sidewalls delivering a smoother ride.

What Is the 255/75R15 Tire Circumference?

The circumference of the 255/75R15 tire size is 94.4 inches (2398.6 millimeters). This parameter is essential as it influences the vehicle’s speedometer reading and overall road speed. A significant change in tire circumference can affect the accuracy of the speedometer.

What Is the 255/75R15 Revolutions Per Mile?

For the 255/75R15 tire size, there are 673 revolutions per mile (or 417 revolutions per kilometer). This means the tire will complete 673 revolutions in one mile (or 417 revolutions in one kilometer). This number is critical as it directly affects the vehicle’s fuel efficiency, speedometer, and odometer readings.

What Is the 255/75R15 Rims Size?

For the 255/75R15 tire size, the rim diameter is 15 inches (381 millimeters). This figure is represented by the last number in the tire size. The tire is designed to be mounted on a wheel (or rim) with a diameter of 15 inches.

Fitment Guide
To ensure safety and optimal performance, it’s important to fit the 255/75R15 tire size to rims with a width range between 6.5-8.5 inches (165.1 – 215.9 millimeters).

Brand Name Model
MERCEDES-BENZ G-Class (1990 – 1997)
OPEL Frontera (1991 – 1995)

Replacement Tire Size
Replacement tires have to be within 3% of the diameter of the original tire size to maintain accurate speedometer and odometer readings, as well as proper torque. Slight variations may be acceptable, but significant size differences can lead to handling issues and potential safety risks.

Tire Size Overall Diameter Difference
225/80R15 29.2″ (741 mm) -2.9%
215/85R15 29.4″ (747 mm) -2.1%
245/75R15 29.5″ (749 mm) -1.8%
205/90R15 29.6″ (751 mm) -1.6%
265/70R15 29.6″ (753 mm) -1.3%
235/80R15 29.8″ (757 mm) -0.8%
315/60R15 29.9″ (759 mm) -0.5%
345/55R15 30.0″ (761 mm) -0.3%
295/65R15 30.1″ (765 mm) 0.3%
275/70R15 30.2″ (767 mm) 0.5%
325/60R15 30.4″ (771 mm) 1.0%
265/75R15 30.7″ (779 mm) 2.1%
285/70R15 30.7″ (781 mm) 2.4%

Our Observation
The 255/75R15 is an excellent choice for drivers seeking a balance of comfort, performance, and efficiency. Its ideal width and height delivers stable handling and a smooth ride. However, as with any tire, proper maintenance and fitting to appropriate rim sizes is critical to leverage its full benefits.

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