Tire Size 245/55r18 in inches
The tire size 245/55R18 is equivalent to 28.6×9.6R18 in inches, meaning the tire has a diameter of 28.6 inches, a width of 9.6 inches, and fits a 18-inch rim.
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).
What Does 245/55R18 Mean?
The term “245/55R18” refers to the size and specifications of a tire. Here’s a breakdown of what each part of the designation means:
- 245: This number represents the width of the tire in millimeters. In this case, the tire is 245 millimeters wide from sidewall to sidewall.
- 55: This number indicates the aspect ratio, which is the ratio of the tire’s sidewall height to its width. In this example, the aspect ratio is 55, meaning the sidewall height is 55% of the tire’s width.
- R: This letter stands for “radial,” which is the most common type of tire construction. Radial tires have ply cords that run perpendicular to the direction of travel.
- 18: This number represents the diameter of the wheel, in inches, on which the tire is designed to fit.
So, in summary, a tire with the designation 245/55R18 is a radial tire that is 245 millimeters wide, with a sidewall height that is 55% of the width, and it is designed to fit a 18-inch wheel.
What Is 245/55R18 In Inches?
The tire size 245/55R18 can be expressed in inches as approximately 9.6 inches wide, 5.3 inches tall in sidewall, and designed to fit a 18-inch wheel rim.
This equates to a tire height of 28.6 inches. The 245/55R18 also has a circumference of 89.9 inches and It completes 704.9 revolutions per mile.
245/55R18 Equivalent
The tire size 245/55R18 is equivalent with a size of 28.6x9.6R18 in inches. This correlation is pivotal for precision in tire selection and optimal vehicle performance.
How Tall Is A 245/55R18 Tire?
The height of a 245/55R18 tire, expressed through its diameter, is approximately 28.6 inches (726.7 mm). In short, A 245/55R18 tire size is 28.6 inches (726.7 mm) tall.
The height of the tire is subject to slight variations, determined by both the brand and model of the tire, in addition to the amount of air pressure it holds.
How Wide Is A 245/55R18 Tire?
The width of a 245/55R18 tire is 9.6 inches (245 millimeters). The first number in the tire size (245) represents the tire’s nominal width in millimeters from sidewall to sidewall when mounted on a specified width wheel. Therefore, the 245/55R18 tire size is 9.6 inches (245 mm) wide.
What Size Rim For 245/55R18?
The size of the rim for a 245/55R18 tire is 18 inches in wheel diameter. In the tire size 245/55R18, the number “18” at the end indicates the diameter of the wheel (rim) in inches that the tire is designed to fit.
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.
