# Tire Size 245/55r18 in inches

The tire size 245/55R18 is equivalent to 28.6×9.6R18 in inches. It boasts an overall diameter of 28.6 inches (726.7mm), a section width of 9.6 inches (245mm), a wheel diameter of 18 inches (457mm), and is approved to be mounted on 7.0-8.5 inches (177.8 – 215.9mm) wide wheels.

## 245/55r18 in inches

Use this Table chart to grasp intricate measurements in inches and millimeters all at once.

Feature Inches Metric (mm)
Tire Diameter 28.6 726.7
Section Width 9.6 245
Rim Height 18 457
Sidewall Height 5.3 134.8
Circumference 89.9 2283
Revolutions 438 per km 706 per mile
Rim Width Range 7.0-8.5 177.8 – 215.9

### How Tall Is A 245/55R18 Tire?

The Tire Height of the 245/55R18 tire size is approximately 28.6 inches, equivalent to 726.7 millimeters. This is calculated by multiplying the section width (245mm) by the aspect ratio (55%), then doubling the result and adding the wheel diameter (18 inches or 457mm).

### What Is the 245/55R18 Width In Inches?

The tread width of the 245/55R18 tire size is 9.6 inches or 245 millimeters. This figure, known as the section width, measures the distance from the widest point of the tire’s outer sidewall to the widest point of its inner sidewall when properly mounted and inflated.

### What Is the 245/55R18 Sidewall Height?

The 245/55R18 tire’s sidewall height is 5.3 inches, equivalent to 134.8 millimeters. This is calculated by multiplying the section width (245mm) by the aspect ratio (55%).

### What Is the 245/55R18 Tire Circumference?

The circumference of the 245/55R18 tire size is approximately 89.9 inches or about 2283 millimeters. This is estimated by multiplying the tire’s diameter by the mathematical constant pi (about 3.14159).

### What Is the 245/55R18 Revolutions Per Mile?

For the 245/55R18 tire size, there are approximately 706 revolutions per mile, or about 438 revolutions per kilometer. This is derived by dividing 63,360 inches (the number of inches in a mile) by the tire’s circumference.

### What Is the 245/55R18 Rims Size?

The 245/55R18 tire size, the rim diameter is 18 inches or 457 millimeters. The tire is designed to be mounted on rims with a width between 7.0 and 8.5 inches (177.8 – 215.9 millimeters).

Fitment Guide
This table will guide you on which vehicles are compatible with the 245/55R18 tire size. It’s essential to check the vehicle manufacturer’s recommendations as fitting an incorrect tire size can affect a vehicle’s performance and safety.

Brand Name Model
CHEVROLET Camaro (2010 – 2015)
DAEWOO Musso (1999 – 2002)
DODGE Charger (2015 – 2020), Grand Caravan (2011 – 2020), Magnum (2004 – 2009)
GAC HONDA Crosstour (2011 – 2018)
GMC Canyon (2009 – 2012), Savana 1500 (1996 – 2002)
HAIMA S7 (2015 – 2022)
HONDA CR-V (2007 – 2018)
HYUNDAI Santa Fe (2015 – 2018)
JEEP Cherokee (2014 – 2018)
LEXUS NX (2015 – 2021), RX (1997 – 2009)
MERCEDES-BENZ Sprinter (2018 – 2023)
MERCURY Marauder (2003 – 2004), Mariner (2005 – 2011)
RAM C/V (2013 – 2018)
SSANGYONG Musso (1993 – 2006)
SUBARU Legacy Outback (2014 – 2023), Outback (2014 – 2023)
SUZUKI Escudo (2005 – 2015), Grand Nomade (2013 – 2020), Grand Vitara (2005 – 2021), XL-7 (2007 – 2009)

Replacement Tire Size
Replacement tires have to be within 3% of the total diameter of the original tires. This ensures they don’t interfere with the gears or affect the handling or the speedometer readings.

Tire Size Overall Diameter Difference
315/40R18 27.9″ -2.50%
285/45R18 28.1″ -1.90%
255/50R18 28.1″ -1.90%
235/55R18 28.1″ -1.70%
155/85R18 28.4″ -0.80%
265/50R18 28.5″ -0.60%
295/45R18 28.5″ -0.60%
225/60R18 28.6″ 0.00%
305/45R18 28.8″ 0.60%
275/50R18 28.9″ 0.80%
175/80R18 29.0″ 1.40%
155/90R18 29.0″ 1.40%
255/55R18 29.0″ 1.40%
235/60R18 29.1″ 1.70%
285/50R18 29.3″ 2.20%

Our Observation
In our review of the 245/55R18 tire size, we observed that this is a popular size for vehicles requiring larger wheels and a higher load rating. The tire offers a combination of good grip, comfort, and durability.

However, like all tires, actual performance can vary based on the tire model and brand. Therefore, always consider the vehicle’s use, driving style, and the local climate when choosing tires. A professional should always install tires to ensure proper fit and safety.

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