Tire Size 225/65R17 in Inches

225/65R17 in Inches

The 225/65R17 is equivalent to 28.5×8.9R17 in inches. This article will provide an in-depth look at the 225/65R17 tire size, focusing on dimensions in inches, relevant specifications, and overall performance. 

We will cover its overall diameter, section width, wheel size, circumference, revolutions per mile, and sidewall height while presenting both metric and inch measurements.

225/65R17 in Inches

Feature Metric Inches
Overall Diameter (Tire Height) 724 mm 28.5″
Tread Width 225 mm 8.9″
Rim Diameter 431.8 mm 17″
Sidewall Height 146 mm 5.7″
Circumference 2273.4 mm 89.5″
Revolutions 440 per km 708 per mile

Dimensions & Specifications
The 225/65R17 tire size is commonly used for vehicles such as SUVs, crossovers, and some minivans. To better understand this tire size, let’s break down each part of the tire size designation:

  • 225 – This number refers to the section width or tread width, measured in millimeters. In this case, it is 225 mm, which is equivalent to 8.9 inches. This width indicates the tire’s contact patch with the road, affecting handling, grip, and overall performance.
  • 65 – This number represents the aspect ratio, which is the ratio of the tire’s sidewall height to its section width. In this case, the sidewall height is 65% of the section width, which calculates to 146 mm (5.7 inches).
  • R – This letter indicates that the tire is a radial tire, the most common type of tire construction in modern vehicles. Radial tires have layers of fabric, steel, or other materials that run radially across the tire, providing better handling, traction, and fuel efficiency.
  • 17 – This number denotes the wheel diameter, measured in inches, which the tire is designed to fit. In this case, it is 17 inches (431.8 mm).

Now that we understand the tire size designation, let’s examine the other relevant dimensions and specifications of the 225/65R17 tire size.

235/65r17 Alternative Size

Tire Size Overall Diameter Difference
305/45R17 27.8″ (706 mm) -2.5%
275/50R17 27.9″ (708 mm) -2.2%
345/40R17 27.9″ (708 mm) -2.2%
255/55R17 28″ (712 mm) -1.7%
215/65R17 28″ (712 mm) -1.7%
155/90R17 28″ (712 mm) -1.7%
235/60R17 28.1″ (714 mm) -1.4%
315/45R17 28.2″ (716 mm) -1.1%
265/55R17 28.5″ (724 mm) 0%
245/60R17 28.6″ (726 mm) 0.3%
165/90R17 28.7″ (730 mm) 0.8%
215/70R17 28.9″ (734 mm) 1.4%
275/55R17 28.9″ (734 mm) 1.4%
235/65R17 29.1″ (738 mm) 1.9%
255/60R17 29.1″ (738 mm) 1.9%

225/65R17 in Inches

Tire Height
The overall diameter, or tire height, refers to the distance from the top of the tire tread to the bottom of the tread when the tire is mounted and inflated. 

For the 225/65R17 tire size, the overall diameter is 724 mm, which is equivalent to 28.5 inches. This measurement is essential for determining proper vehicle clearance, performance, and fuel efficiency.

The circumference of the tire is the distance around the outer edge of the tire. For the 225/65R17 tire size, the circumference is 2273.4 mm, or 89.5 inches. This measurement is vital for calculating tire revolutions per mile, which affects speedometer accuracy, fuel efficiency, and other performance metrics.

Revolutions Per Mile
Tire revolutions per mile, or tire rotations per mile, is the number of times a tire rotates around its axis within a one-mile distance. This metric is important for determining vehicle speed and fuel efficiency. For the 225/65R17 tire size, there are 440 revolutions per kilometer or 708 revolutions per mile.

Sidewall Height
As previously mentioned, the sidewall height of the 225/65R17 tire size is 146 mm (5.7 inches). This height affects ride comfort, handling, and fuel efficiency.

Taller sidewalls generally provide a more comfortable ride by absorbing road imperfections, while shorter sidewalls tend to offer better handling and cornering due to reduced sidewall flex.

Tread Width
The tread width, also known as section width or simply width, is the measurement of the tire’s contact patch with the road. For the 225/65R17 tire size, the tread width is 225 mm (8.9 inches). This dimension is crucial for various aspects of tire performance, such as traction, handling, and braking. 

A wider tread width typically results in a larger contact patch, which can improve grip and stability on various road surfaces. This is especially beneficial in wet or slippery conditions when additional traction is needed to maintain control and safety.

Wheel Size
The wheel size refers to the diameter of the wheel that the tire is designed to fit. For the 225/65R17 tire size, the wheel size is 17 inches (431.8 mm). This measurement is essential for ensuring proper tire fitment and compatibility with the vehicle’s suspension and brake components.

Our Observations
The 225/65R17 tire size is an ideal choice for various vehicles, including SUVs, crossovers, and minivans, offering a well-balanced blend of comfort, performance, and fuel efficiency. 

Its dimensions, such as the 28.5-inch overall diameter and 5.7-inch sidewall height, contribute to a comfortable ride, while the 8.9-inch tread width provides ample grip and stability. 

The 17-inch wheel size is compatible with many modern vehicles, offering an excellent balance between aesthetics and performance. Overall, the 225/65R17 tire size is a versatile option for drivers seeking a reliable and comfortable driving experience.

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