Tire Size 255/65r18 in inches

The tire size 255/65R18 is equivalent to 31.1x10R18 in inches, has a diameter of 31.1 inches (788.7 millimeters), a section width of 10 inches (255 millimeters), a wheel diameter of 18 inches (457 millimeters), and is approved to be mounted on 7.0 – 9.0 inches (177.8 – 228.6 millimeters) wide wheels.

255/65r18 in inches

This Table chart enables you to comprehend detailed measurements in inches and millimeters simultaneously.

Feature Inches Metric
Tire Diameter 31.1 788.7
Section Width 10 255
Rim Height 18 457
Sidewall Height 6.5 165.8
Circumference 97.6 2477.8
Revolutions 404 per km 649 per mile
Rim Width Range 7.0-9.0 177.8 – 228.6

How Tall Is A 255/65R18 Tire?

The Tire Height of the 255/65R18 tire size is 31.1 inches (788.7 millimeters). This measurement, also known as the overall diameter, represents the distance from the bottom to the top of the tire when mounted and inflated. It’s an essential dimension to consider as it affects vehicle compatibility, ground clearance, and overall driving characteristics.

What Is the 255/65R18 Width In Inches?

The 255/65R18 tire’s tread width is 10 inches (255 millimeters). Tread width is the linear distance covered by the tire’s tread, which is in contact with the road. It’s a crucial dimension that can influence the handling and grip of the vehicle, with wider tires generally providing better stability and traction.

What Is the 255/65R18 Sidewall Height?

The 255/65R18 tire’s sidewall height is approximately 6.5 inches (165.1 millimeters). This is calculated as a percentage (the aspect ratio) of the tire’s section width. A higher sidewall height can offer a smoother ride by absorbing more road shocks, while a shorter one often results in improved steering response and cornering stability.

What Is the 255/65R18 Tire Circumference?

The circumference of the 255/65R18 tire size is approximately 97.6 inches (2477.8 millimeters). This is the linear distance around the outer edge of the tire. It’s a crucial factor in calculating the tire’s revolutions per mile and can affect the vehicle’s speedometer reading, gear ratios, and fuel economy.

What Is the 255/65R18 Revolutions Per Mile?

For the 255/65R18 tire size, there are approximately 649 revolutions per mile (404 revolutions per kilometer). This refers to how many times the tire will rotate in one mile. A higher number of revolutions per mile means more tire wear but could also indicate improved traction and grip.

What Is the 255/65R18 Rims Size?

The 255/65R18 tire size the rim diameter is 18 inches (457 millimeters). Moreover, the tire is approved to be mounted on rims with widths ranging from 7.0 to 9.0 inches (177.8 – 228.6 millimeters). Matching the tire size with the appropriate rim size is essential to ensure optimal performance and safety.

Fitment Guide
This table will guide you on which vehicle models can use the 255/65R18 tire size. Make sure to double-check with the vehicle’s manufacturer or a tire professional, as some models may require specific tire specifications due to changes in trims or options.

Brand Name Model
BUICK Enclave (2007 – 2023)
CHEVROLET Traverse (2009 – 2023)
DODGE Ram 2500 (2003 – 2009), Ram 3500 (2003 – 2008)
FORD Everest (2022 – 2023), Explorer (2020 – 2023), F-150 (2009 – 2014), Lobo (2009 – 2017), Ranger (2022 – 2023)
GMC Acadia (2006 – 2016), Acadia Limited (2017 – 2017), Savana 1500 (2003 – 2014), Savana 3500 (1996 – 2013)
LINCOLN Mark LT (2010 – 2010)
MAHINDRA Thar (2020 – 2022)
ROEWE RX8 (2018 – 2022)
SATURN Outlook (2006 – 2010)
VOLKSWAGEN Amarok (2022 – 2023)

Replacement Tire Size
Replacement tires have to be within 3% of the diameter of the original tires to avoid any significant change in the vehicle’s dynamics, such as speedometer reading, transmission shift points, or braking efficiency.

Tire Size Overall Diameter Difference
285/55R18 30.4″ (771 mm) -2.3%
175/90R18 30.4″ (773 mm) -2.0%
265/60R18 30.5″ (775 mm) -1.8%
245/65R18 30.5″ (775 mm) -1.8%
275/60R18 31.0″ (787 mm) -0.3%
235/70R18 31.0″ (787 mm) -0.3%
225/75R18 31.3″ (795 mm) 0.8%
285/60R18 31.5″ (799 mm) 1.3%
265/65R18 31.5″ (801 mm) 1.5%
245/70R18 31.5″ (801 mm) 1.5%
235/75R18 31.9″ (809 mm) 2.5%

Our Observation
The 255/65R18 tire size balances handling and comfort, given its moderate sidewall height and tread width. It’s a common choice for larger passenger vehicles like SUVs and light trucks.

However, it’s crucial to note that the vehicle’s overall performance and driving experience can also be influenced by the tire’s brand, tread pattern, and rubber compound. Thus, always consider these aspects and the tire size when shopping for new tires.

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