# Tire Size 37×12.5r17 to Metric

Do you ever look at a tire size and wonder what it all means? 37×12.5R17 is a strange combination of numbers and letters, but it holds a wealth of essential information about your tires. Let’s break it down and find out what it all means.

Dimension Breakdown
37×12.5R17: A perplexing string of numbers and a letter, right? Not once you get to know them.

• 37 refers to the tire’s overall diameter in inches.
• 12.5 denotes the tire width, again in inches.
• R stands for Radial construction, the most common type of tire construction today.
• 17 is the wheel diameter in inches, that is, the size of the wheel that the tire is designed to fit.

In essence, a 37×12.5R17 tire is a radial tire that is 37 inches in diameter, 12.5 inches wide and fits a 17-inch wheel.

## 37×12.5r17 in inches

FeatureMetric
Tire Diameter37.0″
Tire Section Width12.5″
Rim Width Range17″ x 8.5-11″
Sidewall Height10.0″
Circumference116.2″
Revs/Mile545

Conversion Process
Now that we’ve broken down the dimensions let’s delve into converting these figures from the Imperial system to the Metric system.

• Overall Diameter: A 37-inch diameter equals 939.8 millimeters (since 1 inch equals 25.4 millimeters).
• Tire Width: A 12.5-inch width converts to 317.5 millimeters.
• Wheel Diameter: A 17-inch wheel diameter translates to 431.8 millimeters.

To find the Sidewall Height and Aspect Ratio, we use the following formulas:

• Sidewall Height in inches = (Overall Diameter – Wheel Diameter) / 2
• Aspect Ratio = (Sidewall Height / Tire Width) * 100%

For our 37×12.5R17 tire, the sidewall height is (37-17)/2 = 10 inches or 254 millimeters. The aspect ratio is (10/12.5)*100% = 80%.

Finding a Close Metric Equivalent
Finding a metric equivalent for a 37×12.5R17 tire size isn’t straightforward, given the complexity of tire sizes. However, a tire with a similar diameter and aspect ratio, albeit with a different width, is the metric size 315/80R17. This tire is 315mm wide, has an 80% aspect ratio, and fits a 17-inch wheel.

Practical Applications
The 37×12.5R17 tire size is popular among off-road enthusiasts and is often used on large vehicles like SUVs and trucks. For example, Jeep Wranglers, renowned for their off-road capabilities, often use this tire size.

Given their large diameter and width, these tires provide excellent traction and stability, making them perfect for rugged, uneven terrain.

### What Is Equivalent To A 37×12.5r17?

The tire with a size of 37×12.5r17, when converted to the metric system, is approximately equal to 318/80r17. However, it is worth noting that this specific size is not commonly found for sale.

If you are searching for a similar metric size that is more readily available, you might consider the 315/80r17 tire. This alternative size has dimensions that are comparable to the 37×12.5r17 tire.

### How Tall Are 37×12.5r17?

The ’37’ in the tire size refers to the tire’s overall diameter in inches. So, a 37×12.5R17 tire is approximately 37 inches tall.

### How Wide Is A 37×12.5r17 Tire?

The ‘12.5’ in the tire size refers to the width of the tire. This means a 37×12.5R17 tire is approximately 12.5 inches wide.

### What Size Rim Fits A 37×12.5r17?

The ’17’ in the tire size refers to the wheel diameter (rim) on which the tire should be mounted. Therefore, a 37×12.5r17 tire is designed to fit on a 17-inch rim.

However, the width of the rim can vary. Using a rim width of approximately 8.5 to 11 inches is recommended, but always consult your tire or vehicle manufacturer for specific guidelines.

Summary
Understanding tire sizes, such as 37×12.5R17, isn’t as intimidating as it may seem. These numbers and letters provide valuable insights into your tire’s size and construction.

Converting these dimensions to the metric system offers a broader perspective and aids in finding equivalent metric tire sizes. The practical application of this knowledge is evident in real-world scenarios, such as selecting the appropriate tire for your off-road adventure.

Understanding tire sizes equips you with the information necessary to make informed decisions, enhancing your vehicle’s performance and overall driving experience.

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