Tire Size 255/70r18 in inches

The tire size 255/70R18 is equivalent to 32.1x10R18 in inches, has a diameter of 32.1 inches (814.2mm), a section width of 10 inches (255mm), a wheel diameter of 18 inches (457mm), and is approved to be mounted on 6.5-8.5 inches (165.1-215.9mm) wide wheels. This size is commonly found on light trucks and SUVs, and it offers a balance between performance, comfort, and durability.

255/70r18 in inches

Gain a comprehensive understanding of measurements in inches and millimeters with the help of this Table chart.

FeatureInchesMetric
Tire Diameter32.1814.2
Section Width10255
Rim Height18457
Sidewall Height7178.5
Circumference100.72557.9
Revolutions391 per km629 per mile
Rim Width Range6.5-8.5165.1 – 215.9

How Tall Is A 255/70R18 Tire?

The Tire Height of the 255/70R18 tire size is 32.1 inches or 814.2 millimeters. This height calculates the tire’s diameter, which is the height from one edge of the tire to the other, passing through the center. This dimension impacts the overall driving experience and handling characteristics of the vehicle.

What Is the 255/70R18 Width In Inches?

The 255/70R18 tire’s tread width is 10 inches or 255 millimeters. This is the measurement of the tire’s cross-section, which is the area of the tire that makes contact with the road.

The width of a tire affects traction, load carrying capacity, and overall performance in various driving conditions.

What Is the 255/70R18 Sidewall Height?

The 255/70R18 tire’s sidewall height is 7 inches or 178.5 millimeters. This is the measurement from the rim to the tread of the tire. The sidewall height impacts the ride’s comfort, performance, and vehicle appearance.

What Is the 255/70R18 Tire Circumference?

The circumference of the 255/70R18 tire size is 100.7 inches or 2557.9 millimeters. The tire’s circumference is a critical aspect when it comes to calculating the tire’s revolutions per mile, which directly affects the speedometer reading and the vehicle’s fuel efficiency.

What Is the 255/70R18 Revolutions Per Mile?

For the 255/70R18 tire size, there are approximately 629 revolutions per mile. Revolutions per mile are critical factors affecting your speedometer reading, fuel efficiency, and overall vehicle performance.

What Is the 255/70R18 Rims Size?

The 255/70R18 tire size, the rim diameter is 18 inches or 457 millimeters. This tire is approved to be mounted on rims with a width range of 6.5-8.5 inches (165.1 – 215.9mm). The rim size plays a significant role in the tire’s overall diameter and handling characteristics.

Fitment Guide
This table will guide you on which vehicles can use the 255/70R18 tire size. The tire size is often found on vehicles such as the Jeep Wrangler, Ford Ranger, and Chevrolet Silverado. Please consult with your vehicle’s owner manual or a tire professional for exact fitment.

Brand NameModel
FORDBronco (2021 – 2023), Expedition (2007 – 2014)
JEEPGladiator (2019 – 2023), JT (2019 – 2023), Wrangler (2007 – 2023)
LAND ROVERDefender (2019 – 2023)
LINCOLNNavigator (2003 – 2014)
TOYOTATundra (2007 – 2022)

Replacement Tire Size
Replacement tires must be within 3% of the height and width of the original tire to maintain performance and safety. Always consult with a tire professional before choosing a replacement tire.

Tire SizeOverall DiameterDifference
225/75R1831.3″-2.50%
285/60R1831.5″-2.00%
265/65R1831.5″-1.70%
245/70R1831.5″-1.70%
235/75R1831.9″-0.70%
275/65R1832.1″0.00%
305/60R1832.4″1.00%
285/65R1832.6″1.50%
265/70R1832.6″1.70%
375/50R1832.8″2.20%

Our Observation
The 255/70R18 tire size offers a good balance between comfort, performance, and durability. It provides a larger contact patch for better traction and stability, particularly in off-road conditions.

It also contributes to a more comfortable ride compared to larger sizes and is suitable for various vehicles, including light trucks and SUVs.

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