Have you ever found yourself stuck between two tire sizes and unable to make the right decision? If yes, then worry not because I’ve got you covered. In this comprehensive guide, I’ll be comparing the popular 255 75r15 and 31×10 5r15 tire sizes.
To give you a brief overview, the 255 75r15 and 31×10 5r15 are both popular tire sizes used by truck and SUV enthusiasts. The 255 75r15 is known for its all-terrain capabilities.
while the 31×10 5r15 is popular among off-road enthusiasts due to its larger size and wider footprint. By the end of this article, you’ll be equipped with all the necessary information to make an informed decision on which tire size is best for your vehicle.
255 75r15 Vs 31×10 5r15 Tire Size: Comparison Table
In this section, I am going to provide you with a comprehensive chart of differences so that you may find it easy to spot the main differences quickly. Here is the chart: –
| Main Topics | 255 75R15 | 31×10 5R15 |
|---|---|---|
| Section Width | 10.04 inches | 10.51 inches |
| Sidewall Height | 7.53 inches | 7.99 inches |
| Circumference | 94.43 inches | 97.32 inches |
| Overall Diameter | 30.06 inches | 30.98 inches |
| Revs Per Mile | 671 | 651 |
| Tread Depth | 15/32 inches | 15/32 inches |
| Rim Diameter | 15 inches | 15 inches |
| Typical Weight | 43 lbs | 43.7 |
| Tire Type | A-Radial Ply Tire | A-Radial Ply Tire |
255 75R15 Vs 31×10 5R15 Tire Size: A Detailed Analysis
Let us now have a detailed discussion on the differences mentioned in the chart. These differences will surely enhance your tire knowledge for sure. He it goes: –
Section Width
Section width is an important aspect of tire design and refers to the measurement of the tire’s width from one sidewall to the other.
It is typically measured in millimeters and can vary depending on the type of vehicle and intended use of the tire.
The section width for the 255 75r15 tires is 10.04 inches. Whereas, the section width for the 31×10 5r15 tires is 10.51 inches.
The difference between the two tires in this regard is 0.47 inches or 4.7 % in terms of the percentage.
Sidewall Height
Sidewall height, also known as aspect ratio, is another important tire measurement that affects a tire’s performance and appearance. The aspect ratio is the ratio of the height of the tire’s sidewall to the width of the tire’s section.
The sidewall height for the 255 75r15 tires is 7.53 inches. On the other hand, the sidewall height for the 31×10 5r15 tires is 7.99 inches.
The difference between the two tires is 0.46 inches. Percentage-wise the difference stands at 6.1%.
Circumference
Circumference is another important tire measurement that can affect a vehicle’s performance and accuracy of its speedometer and odometer.
It is the distance around the outer circumference of the tire and is directly related to the tire’s diameter.
The circumference of the 255 75r15 tires is 94.43 inches. On the contrary, the circumference of the 31×10 5r15 tires is 97.32 inches.
The difference between the two in terms of circumference is 2.89 inches. Percentage-wise the difference stands at 3.1%.
Overall Diameter
It refers to the distance from the ground to the top of the tire, including the tread and sidewall. The overall diameter is determined by adding twice the sidewall height to the wheel diameter.
The overall diameter of a tire is another important measurement that can affect a vehicle’s performance and safety.
The overall diameter of the 255 75r15 tires is 30.06 inches. Whereas, the overall diameter of the 31×10 5r15 tires is 30.98 inches.
The difference between the two tires in this regard is 0.92 inches. Percentage-wise the difference stands at 3.1%.
Revs Per Mile
Revs per mile, also known as revolutions per mile (RPM), is a term used to describe the number of times a tire rotates around its axis in order to travel one mile.
It is an important metric to consider when selecting tires for a vehicle, as it can affect fuel economy, handling, and even the accuracy of a vehicle’s speedometer.
The revs per mile of the 255 75r15 tires is 671. Whereas, the revs per mile of the 31×10 5r15 tires is 651. The difference between the two tires is exactly 20. The percentage in regard to the difference is 3%.
Tread Depth
Tread depth is a critical aspect of tire maintenance that directly impacts a vehicle’s performance and safety.
Tread depth refers to the measurement of the depth of the grooves in the tire’s surface that provide traction and stability on the road.
Regularly checking the tread depth of tires is easy and can be done with a simple gauge or even a penny. Both tires 255 75r15 and 31×10 5r15 have the same tread depth of 15/32 inches.
Rim Diameter
The rim diameter of a tire refers to the diameter of the wheel onto which the tire is mounted. It is an important measurement to consider when selecting tires for a vehicle, as the diameter of the rim can affect the handling, performance, and appearance of the tire.
In general, a tire with a larger rim diameter will have a lower sidewall height, resulting in a shorter overall tire height. Both tires 255 75r15 and 31×10 5r15 have the same rim diameter of 15 inches each.
Typical Weight
The weight of a tire can vary greatly depending on its size, type, and intended use. In general, passenger car tires typically weigh between 20 and 30 pounds each, while larger truck and SUV tires can weigh up to 100 pounds each.
The typical weight for the 255 75r15 tires is 43 lbs. Whereas, the typical weight for the 31×10 5r15 tires is 43.7 inches. The difference between the two tires in this regard is 0.70 inches.
Tire Type
Radial tires are a type of tire construction that has become the most popular tire design for passenger cars, SUVs, and light trucks.
The radial tire design is characterized by its unique construction, which features a series of radial ply cords running from bead to bead, perpendicular to the tread of the tire.
It is really great to witness that both tires 255 75r15 and 31×10 5r15 have radial tire construction type which is one of the best tire construction types in the market.
What Are the Advantages of 255 75R15 Tires?
The 255 75r15 tires are one of the most popular tires available in the market. It offers many advantages to the owners. Some of the advantages are as follows: –
- Smooth Ride
- Improved Traction
- Load Capacity
- Availability
- Durability
Smooth Ride
The 255 75r15 tire size has a taller sidewall than some other tire sizes, which provides a more cushioned ride on rough terrain. This can be particularly advantageous for those who frequently drive on unpaved roads or off-road trails.
Improved Traction
The wider sidewall of the 255 75r15 tire size can help improve traction on wet or slippery roads. This can be particularly useful in areas with heavy rainfall or snow.
Load Capacity
The 255 75r15 tire size is designed to handle heavier loads, making it a popular choice for trucks and SUVs. This can be particularly useful for those who frequently haul heavy loads or tow trailers.
Availability
The 255 75r15 tire size is a common size, which means it is readily available at most tire dealerships. This can make it easier to find replacements or upgrades when needed.
Durability
The 255 75r15 tire size is known for its durability and resistance to wear and tear. This can be particularly advantageous for those who frequently drive on rough terrain or in harsh weather conditions.
What Are the Advantages of 31×10 5r15 Tires?
Like 255 75r15 tires, the 31×10 5r15 tires are also one of the most popular tires available in the market. It offers many advantages to the owners. Some of the advantages are as follows:
- Off-Road Performance
- Handling
- Comfort
- Improved Braking
- Versatility
Off-Road Performance
The 31×10 5r15 tire size is designed with a wider tread pattern and more aggressive sidewalls, making it ideal for off-road use. It offers improved traction on mud, sand, and loose terrain, making it a popular choice for off-road enthusiasts.
Handling
The wider tread pattern of the 31×10 5r15 tire size provides improved handling and stability, particularly when driving at higher speeds. This can be particularly advantageous for those who frequently drive on highways or other high-speed roads.
Ride Comfort
The 31×10 5r15 tire size can provide a comfortable ride due to its wider tread pattern and increased sidewall height. This can help to absorb shocks and bumps on the road, making for a smoother driving experience.
Improved Braking
The wider tread pattern of the 31×10 5r15 tire size can also improve braking performance, as it provides more surface area for the brakes to grip onto. This can be particularly advantageous in emergency braking situations.
Versatility
The 31×10 5r15 tire size is a versatile option that can be used for a range of different driving needs. It is commonly used for off-road adventures, but it can also be used for daily driving or commuting.
255 75r15 Vs 31×10 5r15 Tire Size: Additional Comparison Chart
I have come up with another chart that contains some extra discussive topics regarding these two tires. Here goes the chart: –
| Main Topics | 255 75R15 Tire Size | 31×10 5R15 Tire Size |
| Rim Width Range | 6.5-8 inches | 7-9 inches |
| Max Speed | 112 mph | 112 mph |
| Max Load | 2270 lbs | 2270 lbs |
| Max PSI | 50 | 50 |
| Aspect Ratio | 75 | 75 |
| Sidewall Letters | Black | Black/ white |
| Speedometer Reading Status | Correct | slightly different |
Rim Width Range
- It refers to the range of rim widths that a tire is designed to fit onto.
- Narrower rims fail to provide adequate support to the tires.
- Wider rims negatively impact the tire’s handling and cause excessive wear.
The rim width range for the 255 75r15 tires is 6.5-8 inches. On the contrary, the rim width range for the 31×10 5r15 tires is 7-9 inches. The difference between the two tires in this regard is 0.50-1 inch.
Max Speed
- It is the highest speed at which the tire is designed to operate safely.
- The maximum speed rating for a tire is typically listed on the tire sidewall.
- Tires with a higher maximum speed rating typically have a stiffer sidewall.
Both tires 255 75r15 and 31×10 5r15 have the same max speed of 112 mph. It’s important to note that the maximum speed rating is not a recommendation to drive at that speed, but rather an indication of the tire’s capability.
Max Load
- The max load of a tire refers to the maximum weight that a tire can withstand.
- The max load rating is determined through a series of rigorous tests.
- Overloading a vehicle can cause other issues beyond tire failure.
It’s important to note that the max load rating is not a recommendation to constantly operate at the maximum weight capacity, but rather an indication of the tire’s capability. Both tires 255 75r15 and 31×10 5r15 have the same max load of 2270 lbs.
Max PSI
- It refers to the maximum air pressure that a tire can safely hold.
- When inflating tires, it’s important to use a high-quality tire pressure gauge.
- Overinflating or underinflating tires can have a negative impact on tire wear.
It’s really crucial to add that the recommended tire pressure is not the same as the max PSI rating, and inflating a tire to the max PSI rating can result in a harsh ride and reduced handling. Both tires 255 75r15 and 31×10 5r15 have the same max psi of 50.
Aspect Ratio
- It refers to the height of the sidewall with respect to the width.
- A higher aspect ratio typically indicates a tire with a narrower tread.
- Different aspect ratios may be recommended for different types of vehicles.
Both tires 255 75r15 and 31×10 5r15 have the same aspect ratio of 75. You must consult with a qualified tire professional to ensure that you choose the right tire size and aspect ratio for your vehicle and driving conditions.
255 75R15 Vs 31×10 5R15 Tire Size: Our Best Opinion
The 255 75r15 and 31×10 5r15 tire sizes are popular choices for trucks and SUVs. The 255 75r15 is a metric size with a slightly smaller diameter and taller sidewall, providing a smoother ride on rough terrain.
The 31×10 5r15 is an imperial size with a wider tread and improved traction off-road. Choosing between these sizes ultimately depends on personal preference and driving needs.
Consider factors such as the terrain you will be driving on, load capacity, and vehicle specifications before making a decision.
Consulting with a tire professional can help ensure you select the right tire size for your vehicle and intended use.
Also Read: 185 65r15 vs 195 65r15 Tire Size – Table of Comparison
Frequently Asked Questions
Drivers around the world ask many questions regarding various types of tires they choose for their vehicles. Here are some of them discusses below: –
What Is the Difference between the 255/75R15 and 31×10.5R15 Tire Sizes?
The main difference between these two tire sizes is their dimensions. The 255 75r15 has a section width of 255mm, a sidewall height that is 75% of the section width, and fits on a 15-inch wheel.
The 31×10 5r15 has a section width of 31 inches, a sidewall height that is 10.5% of the section width, and also fits on a 15-inch wheel.
Which Tire Size Offers Better Fuel Efficiency?
Both tire sizes are similar in terms of fuel efficiency, as they have similar overall diameters and widths. However, the 255 75r15 may offer slightly better fuel efficiency due to its narrower tread pattern and lighter weight.
Which Tire Size Is Better for Off-Road Use?
Both the 255 75r15 and 31×10 5r15 tire sizes are suitable for off-road use, but the 31×10 5r15 may offer better off-road performance due to its wider tread pattern and more aggressive sidewalls.
Will switching to a different tire size affect my vehicle’s speedometer reading?
Yes, switching to a different tire size can affect your vehicle’s speedometer reading, as the speedometer is calibrated based on the original tire size.
A larger tire will make the speedometer read slower than your actual speed, while a smaller tire will make the speedometer read faster.
Read More: 295 50r15 vs 275 60r15 Tire Size – The Real Differences
Final Thoughts
The article titled “255 75R15 Vs 31×10 5R15 Tire Size- The Ultimate Comparison Guide” is a comprehensive comparison guide between two tire sizes that are commonly used for off-road vehicles.
The article explains the differences between the two sizes in terms of their width, height, and tread design. It also provides information on their performance, durability, and suitability for different types of terrains.
Ultimately, it is important to consider the driving conditions and preferences of the driver to determine which tire size is the best fit for their vehicle. For more info plz read here.
