Tire Size 275/40r18 in inches

The tire size 275/40R18 is equivalent to 26.7×10.8R18 in inches, has a diameter of 26.7 inches (677.2 mm), a section width of 10.8 inches (275 mm), a wheel diameter of 18 inches (457 mm), and is approved to be mounted on 9.0-11.0 inches (228.6 – 279.4 mm) wide wheels. This particular tire size caters to a variety of passenger vehicles and is popular due to its broad compatibility and performance parameters.

275/40r18 in inches

This Table chart offers a comprehensive presentation of measurements in both inches and millimeters, promoting immediate understanding.

Tire Diameter26.7677.2
Section Width10.8275
Rim Height18457
Sidewall Height4.3110
Revolutions470 per km756 per mile
Rim Width Range9.0-11.0228.6 – 279.4

How Tall Is A 275/40R18 Tire?

The Tire Height of the 275/40R18 tire size is 26.7 inches or 677.2 mm. This measurement, also known as the overall diameter, is crucial as it affects the overall gearing ratios, ride comfort, speedometer accuracy, and clearance within the vehicle’s wheel well.

What Is the 275/40R18 Width In Inches?

The tread width of the 275/40R18 tire size is approximately 10.8 inches or 275 mm. This width measurement can influence aspects such as the vehicle’s stability, fuel economy, and handling capabilities, with wider tires often offering more grip but potentially decreasing fuel efficiency.

What Is the 275/40R18 Sidewall Height?

The sidewall height of the 275/40R18 tire size is approximately 4.3 inches or 110 mm. This “aspect ratio” of 40 indicates that the height is 40% of the tire’s width. A lower aspect ratio often contributes to improved handling and steering response at the expense of ride comfort.

What Is the 275/40R18 Tire Circumference?

The circumference of the 275/40R18 tire size is around 83.8 inches or 2127.5 mm. The tire’s circumference impacts how the tire interacts with the road and how many times it needs to revolve to cover a certain distance.

What Is the 275/40R18 Revolutions Per Mile?

For the 275/40R18 tire size, there are approximately 756 revolutions per mile or 470 revolutions per kilometer. The revolutions per mile affects various factors such as the vehicle’s speedometer, odometer, and transmission shift points.

What Is the 275/40R18 Rims Size?

For the 275/40R18 tire size, the rim diameter is 18 inches or 457 mm. The specified rim width range for this size is between 9.0-11.0 inches (228.6 – 279.4 mm), making it versatile for various applications.

Fitment Guide
This table will guide you on which vehicle models can use the 275/40R18 tire size. Compatibility greatly depends on vehicle specifications, modifications, and regional regulations. Always consult with a tire professional or your vehicle’s manufacturer.

Brand NameModel
ASTON MARTINV8 Vantage (2005 – 2017)
BMW5 Series (2009 – 2023), 6 Series (2003 – 2019), 8 Series (2018 – 2023), M3 (2014 – 2024), M4 (2014 – 2023), Z4 (2018 – 2023), Z8 (2000 – 2003)
CHEVROLETCorvette (1997 – 2004)
FERRARI360 Challenge Stradale (2003 – 2005), 360 Modena (1999 – 2005), 360 Spider (2000 – 2005)
HYUNDAIGenesis (2013 – 2017)
JAGUARF-Type (2012 – 2023), XK (2006 – 2015)
LINCOLNMark VIII (1993 – 1998)
MERCEDES-BENZCL-Class (1996 – 1998), CL-Class AMG (1994 – 1999), CLS-Class (2018 – 2023), E-Class (2017 – 2023), E-Class Cabriolet (2017 – 2023), E-Class Coupe (2017 – 2023), S-Class (1999 – 2006), S-Class AMG (1999 – 2005)
TOYOTASupra (2019 – 2023)
VINFASTLux A2.0 (2019 – 2022)

Replacement Tire Size
Replacement tires have to be within 3% of the diameter of the original tire size to avoid significant alterations to the speedometer, suspension geometry, and overall vehicle performance. When choosing an alternative tire size, ensure to comply with this guideline.

Tire SizeOverall DiameterDifference

Our Observation
In conclusion, the 275/40R18 tire size is versatile, providing a balance between performance and comfort. It fits a variety of rim sizes and vehicles, making it a popular choice among many drivers.

However, like all tires, its performance and suitability largely depend on the specific vehicle and driving conditions. Always ensure to consult a professional when choosing a tire size.

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