Tire Size 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
|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″|
|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%|
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.
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.
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.
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.
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.
Meet Caitlin McCormack, a Tire Size Expert and Blogger Passionate About Everything Related to Tires. With Years of Experience in the Tire Industry, Caitlin Has Become an Expert in Tire Sizes and Their Impact on Vehicle Performance.