Tire Size 255/55r18 in inches

The tire size 255/55R18 is equivalent to 29x10R18 in inches, has a diameter of 29 inches (737.7mm), a section width of 10 inches (255mm), a wheel diameter of 18 inches (457mm), and is approved to be mounted on 7.0-9.0 inches (177.8-228.6mm) wide wheels.

255/55r18 in inches

This Table chart provides a comprehensive overview of measurements in both inches and millimeters simultaneously.

Feature Inches Metric
Tire Diameter 29 737.7
Section Width 10 255
Rim Height 18 457
Sidewall Height 5.5 140.3
Circumference 91.2 2317.6
Revolutions 695 per mile 432 per km
Rim Width Range 7.0-9.0 177.8 – 228.6

How Tall Is A 255/55R18 Tire?

The tire height of the 255/55R18 tire size is approximately 29 inches or 737.7 millimeters. This height, also referred to as the tire’s overall diameter, is a crucial measurement that informs the car’s ground clearance, overall vehicle height and wheel well space.

What Is the 255/55R18 Width In Inches?

The tread width of the 255/55R18 tire size is 10 inches or 255 millimeters. This dimension refers to the width of the tire, from one side to the other when looking at it from directly above. The section width plays a significant role in the tire’s contact with the road, influencing traction, handling, and fuel efficiency.

What Is the 255/55R18 Sidewall Height?

The 255/55R18 tire’s sidewall height is 5.5 inches or 140.3 millimeters. This measure is the height of the tire from the bead to the tread. A tire’s sidewall height, or aspect ratio, impacts ride comfort, handling, and appearance.

What Is the 255/55R18 Tire Circumference?

The circumference of the 255/55R18 tire size is approximately 91.2 inches or 2317.6 millimeters. The tire’s circumference is significant as it influences the speedometer’s reading and overall vehicle performance.

What Is the 255/55R18 Revolutions Per Mile?

For the 255/55R18 tire size, there are around 695 revolutions per mile or 432 revolutions per kilometer. This factor can affect the vehicle’s fuel efficiency and performance, as well as the speedometer and odometer readings.

What Is the 255/55R18 Rims Size?

The 255/55R18 tire size, the rim diameter is 18 inches or 457 millimeters. The tire is approved to be mounted on rims ranging from 7.0 to 9.0 inches wide, equivalent to 177.8-228.6 millimeters.

Fitment Guide
This table will guide you on which vehicle makes and models the 255/55R18 tire size can suitably be fitted on. Keep in mind that tire size fitment can vary depending on the vehicle’s year, model, and optional equipment.

Brand Name Model
ACURA MDX (2001 – 2013), RDX (2013 – 2018)
AUDI Q7 (2005 – 2015)
BMW X5 (1999 – 2023)
CADILLAC SRX (2004 – 2009)
DAEWOO Korando (1999 – 2001), Musso (1999 – 2002)
DODGE Dakota (1991 – 2004), Durango (1997 – 2003)
FORD Endeavour (2006 – 2015), Everest (2006 – 2015)
GMC Savana 1500 (1996 – 2002), Sierra 1500 (1988 – 1998)
HONDA CR-V (2007 – 2012), MR-V (2006 – 2008), Pilot (2003 – 2015)
HYUNDAI Santa Fe (2015 – 2023), Santa Fe Sport (2013 – 2018), Santa Fe XL (2018 – 2019)
ISUZU Axiom (2002 – 2004)
JEEP Cherokee (2001 – 2008), Grand Cherokee (1999 – 2005), Liberty (2005 – 2013)
KIA KX7 (2017 – 2022), Sorento (2002 – 2011)
LAND ROVER Discovery 2 (1998 – 2004), Freelander 2 (2006 – 2014), LR2 (2007 – 2015), Range Rover (1994 – 2002), Range Rover Sport (2005 – 2009)
LEXUS RX (2009 – 2015), RZ (2023 – 2023)
MAZDA CX-7 (2007 – 2012), Tribute (2000 – 2011)
MERCEDES-BENZ GLC-Class (2022 – 2023), GLE-Class (2015 – 2019), M-Class (2005 – 2015), R-Class (2005 – 2015)
MERCURY Mariner (2005 – 2011), Mountaineer (1997 – 2001)
MITSUBISHI Endeavor (2003 – 2011)
NISSAN Terrano 2 (1993 – 2006)
PORSCHE Cayenne (2002 – 2018), Macan (2014 – 2022)
SAAB 9-7x (2005 – 2009)
SSANGYONG Musso (1993 – 2006), Musso Sports (2004 – 2006), Rexton (2003 – 2005)
SUBARU B9 Tribeca (2005 – 2007), Tribeca (2008 – 2014)
SUZUKI Grand Vitara (2008 – 2013)
VOLKSWAGEN ID. Buzz (2022 – 2023), Touareg (2002 – 2018)

Replacement Tire Size
Replacement tires have to be within 3% of the total diameter of the original tire to ensure proper vehicle performance. This is essential to maintain accurate speedometer and odometer readings and correct vehicle handling.

Tire Size Overall Diameter Difference
235/55R18 28.1″ -3.00%
155/85R18 28.4″ -2.20%
295/45R18 28.5″ -1.90%
265/50R18 28.5″ -1.90%
245/55R18 28.6″ -1.40%
225/60R18 28.6″ -1.40%
305/45R18 28.8″ -0.80%
275/50R18 28.9″ -0.50%
175/80R18 29.0″ 0.00%
155/90R18 29.0″ 0.00%
235/60R18 29.1″ 0.30%
285/50R18 29.3″ 0.80%
225/65R18 29.5″ 1.60%
265/55R18 29.5″ 1.60%
325/45R18 29.5″ 1.60%
245/60R18 29.6″ 1.90%
165/90R18 29.7″ 2.40%
275/55R18 29.9″ 3.00%

Our Observation
The 255/55R18 tire size offers a balanced blend of comfort and performance. This tire has a generous 10-inch section width and provides ample road contact for secure traction and handling.

The 29-inch height contributes to the vehicle’s ground clearance, while the 5.5-inch sidewall ensures a comfortable ride. It is ideal for drivers who desire a harmonious combination of reliability, comfort, and performance.

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