Last Updated on March 8, 2023 by Roger Evans
Are you in the market for new tires but feeling overwhelmed by the many options available? One comparison you may be considering is between 31×10 50r15 and 235 75r15 tire sizes.
In this article “31×10 50R15 Vs 235 75R15 Tire Size”, you will get a detailed comparison of the two tire sizes and it will help you decide which one is right for your vehicle.
You see, there are many tire options available in the market but we don’t really which one will be best for our vehicles, do we? So, when buying a new tire you must know your vehicle’s requirements first and choose the perfect tires for your dream vehicle.
31×10 50R15 Vs 235 75R15 Tire Size: Table of Comparison
After much research, I have formed a detailed numerical chart that shows the major differences between the two tire sizes. Here goes the chart: –
|235 75R15 Tires||31×10 50R15 Tires|
|Section Width 9.25 inches||Section Width 10.51 inches|
|Overall Diameter 28.88 inches||Overall Diameter 30.98 inches|
|Revs Per Mile 698||Revs Per Mile 651|
|Sidewall Height 6.94 inches||Sidewall Height 7.99 inches|
|Circumference 90.72 inches||Circumference 97.32 inches|
|Radius 14.44 inches||Radius 15.49 inches|
|Rim Width Range 6-8.5 inches||Rim Width Range “Unknown”|
|Typical Weight 36 lbs||Typical Weight 43.7 lbs|
|Rim Diameter 15 inches||Rim Diameter 15 inches|
|Tread Depth 13/32 inches||Tread Depth 16/32 inches|
|Tire Type ( A-Radial Ply Tire)||Tire Type ( A-Radial Ply Tire)|
|Sidewall Letters Black||Sidewall Letters Black|
31×10 50R15 Vs 235 75R15 Tire Size: A Detailed Discussion
Now let us discuss the differences in detail so that you must know they actually mean and what impact do they make to the performance of your tires. Here it goes: –
- The first number in the tire size represents the section width of the tire.
- A tire with a wider section width will generally provide better traction.
- It is also important for determining the overall size of the tire.
The cross-section width or the section width of 235 75r15 tires is 9.25 inches. On the other hand, the section width of the 31×10 50r15 tires is 10.51 inches. The difference between the two tires in this regard is 1.26 inches or 13.6%.
- A tire with a larger overall diameter will cover more ground with each revolution.
- A tire with a smaller overall diameter will cover less ground with each revolution.
- The overall diameter of a tire influences the gearing of the vehicle.
The overall diameter for the 235 75r15 tires is 28.88 inches. Whereas, the overall diameter for the 31×10 50r15 tires is 30.98 inches. The difference between the two tires in this regard is 2.1 inches or 7.3%. The 31×10 50r15 tires have a slightly higher diameter than the 235 75r15 tires.
Revs Per Mile
- RPM of tires refers to the number of times the tire rotates on its axis per minute.
- A higher RPM can increase engine power and acceleration.
- A lower RPM improves fuel efficiency and reduces wear and tear on the engine.
The RPM for the 235 75r15 tires is 698. On the contrary, the RPM for the 31×10 50r15 tires is 651. The difference between the two tires in this regard is 47 or 6.8%. The 235 75r15 tires have a higher RPM than the 31×10 50r15 tires.
- The sidewall height can be found on the tire’s sidewall.
- It is usually expressed as a two-digit number following the section width.
- It influences the handling, ride quality, and fuel efficiency of the vehicle.
The sidewall height for the 235 75r15 tires is 6.94 inches. On the other hand, the sidewall height for the 31×10 50r15 tires is 7.99 inches. The difference between the two tires in this regard is 1.05 inches or 15.1%.
- It refers to the distance around the tire’s outer edge when it is inflated.
- It is calculated by multiplying the tire’s diameter by pi (3.14159).
- The circumference of a tire can also affect the wear and tear on the tire.
The circumference of the 235 75r15 tires is 90.72 inches. On the contrary, the circumference of the 31×10 50r15 tires is 97.32 inches. The difference between the two tires in this respect is 6.6% or 7.3%.
- It is the distance from the center of the wheel to the outer edge of the tire.
- Tires with a larger radius generally provide better handling and cornering.
- It affects the handling, ride quality, and fuel efficiency of the vehicle.
The radius of the 235 75r15 tires is 14.44 inches. Whereas, the radius of the 31×10 50r15 tires is 15.49 inches. The difference between the two tires in this regard is 1.05 inches.
Rim Width Range
- Each tire size has a recommended rim width range.
- Mounting a tire on a rim that is too narrow or too wide can cause problems.
- If a tire is mounted on a rim that is too narrow, the tire may become pinched.
The rim width range for the 235 75r15 tires is 6-8.5 inches. On the other hand, the rim width range for the 31×10 50r15 tires is not known at all. This means that the 31×10 50r15 tires don’t have any exact rim width range whatsoever.
- Larger tires, such as those used on SUVs and trucks, tend to weigh more.
- The weight of a tire can influence the fuel efficiency of the vehicle.
- It can also affect the handling and responsiveness of the vehicle.
The typical weight for the 235 75r15 tires is 36 lbs. On the contrary, the typical weight for the 31×10 50r15 tires is 43.7 lbs. The difference between the two tires in this respect is around 7.7 lbs.
- The rim diameter of a tire is the diameter of the wheel rim.
- Tires with larger rim diameters tend to have shorter sidewalls and wider treads.
- The rim diameter influences the overall size and shape of the tire.
The rim diameter of a tire is an important factor to consider when selecting tires for a vehicle, and it’s important to choose a size and diameter that are compatible with the vehicle’s wheel size and performance needs. Both tires 235 75r15 and 31×10 50r15 have the same rim diameter of 16 inches.
- The legal minimum tread depth for passenger car tires is 2/32 of an inch.
- Tires with low tread depth may be more prone to hydroplaning.
- Tread depth is important for maintaining traction and grip on the road.
The tread depth for the 235 75r15 tires is 13/32 inches. Whereas, the tread depth for the 31×10 50r15 tires is 16/32 inches. The difference between the two tires in this regard is 3/0 inches.
- Radial tires are a type of tire construction that features layers of fabric cords.
- Radial tires have a flexible sidewall that allows the tire to absorb bumps.
- The radial construction of tires also allows them to run at lower temperatures.
Radial tires also provide better stability and ride comfort than bias-ply tires, which are an older type of tire construction that uses plies arranged in a diagonal pattern. So, it is a great thing that both tires 235 75r15 and 31×10 50r15 have radial tire construction.
- It provides important information about the tire’s specifications and characteristics
- The letters typically include a combination of numbers and letters.
- It’s important to carefully read and understand the sidewall letters on a tire.
The sidewall letters on tires are an important source of information about the tire’s size, construction, performance, and safety characteristics, and should be carefully reviewed and understood before purchasing or using a tire. All this information is usually written in black letters.
31×10.50R15 Tire Size: Conversion to Metric Size
The tire size 31×10.50R15 is commonly used on light trucks and SUVs in North America. Here’s a brief explanation of how to convert this size to the metric system:
The first number, 31, refers to the overall diameter of the tire in inches. If you convert this in millimeters, the result will be 787 mm. The second number, 10.50, refers to the width of the tire in inches. If you convert this in millimeters, the result will be 267 mm.
The letter R indicates that this is a radial tire, which is a type of tire construction in which the layers of the tire’s internal structure run radially (perpendicular) from bead to bead.
The final number, 15, indicates the diameter of the rim (in inches) that the tire is designed to fit. If you convert this in millimeters, the result will be 381 mm.
Using the metric system, the size of this tire would be expressed as 267/76/R15, where 267 is the tire width in millimeters, 76 is the aspect ratio, R indicates radial construction, and 15 is the rim diameter in inches.
31×10 50R15 Vs 235 75R15 Tire Size: Close Tire Equivalents
Below is the chart of possible tire sizes that are very close equivalents of 235 75r15 and 31×10 50r15 tire sizes. Check out the chart below now: –
|Equivalent Tire Sizes|
for 31×10 50R15
|Overall Diameter||Equivalent Tire Sizes |
for 235 75R15
|241/84/R15||31.0 inches||216/82/R15||29.0 inches|
|457/44/R15||31.0 inches||457/39/R15||29.0 inches|
|406/50/R15||31.0 inches||381/47/R15||29.0 inches|
|330/62/R15||31.0 inches||292/61/R15||29.0 inches|
|292/70/R15||31.0 inches||265/70R15||29.6 inches|
|279/73/R15||31.0 inches||470/38/R15||29.0 inches|
|470/43/R15||31.0 inches||394/45/R15||29.0 inches|
|419/48/R15||31.0 inches||318/56/R15||29.0 inches|
|343/59/R15||31.0 inches||267/67/R15||29.0 inches|
|318/64/R15||31.0 inches||255/70R15||29.1 inches|
31×10 50R15 Vs 235 75R15 Tire: Additional Chart of Differences
I have again compiled a second chart that will surely aid you to learn a bit more about these two best tires. Here goes the second chart: –
|Key Points||235 75R15||31×10 50R15||Differences|
|Max Speed||118 mph||112 mph||6 mph|
|Max Load||2039 lbs||2270 lbs||231 lbs|
|Actual Speed||62.14 mph||57.92 mph||4.22 mph|
|Speedometer Reading||100 km/h||93.22 km/h||6.78 km/h|
|Speedometer Reading Status||Correct||slightly different||None|
- It refers to the maximum air pressure that a tire is designed to safely handle.
- Overinflating or underinflating a tire can have serious consequences.
- The max psi for a tire can vary depending on the size and load rating.
The max psi for the 235 75r15 tires is 36 psi. Whereas, the max psi for the 31×10 50r15 tires is 50 psi. The difference between the two tires in this regard is 14 psi. This indicates that the 31×10 50r15 tires have an increased psi compared to the 235 75r15 tires.
- The max speed rating for a tire is typically indicated on the sidewall of the tire.
- The max speed rating is usually represented by a letter code.
- Tires with a lower speed rating can result in decreased safety and performance.
The max speed for the 235 75r15 tires is 118 mph. Whereas, the max speed for the 31×10 50r15 tires is 112 mph. The difference between the two tires in this regard is 6 mph.
- Max load refers to the maximum weight that a tire is designed to safely carry.
- Always choose tires with a max load rating that’s appropriate for your vehicle.
- It’s also important to follow recommended tire maintenance practices as well.
The max load for the 235 75r15 tires is 2039 lbs. On the other hand, the max load for the 31×10 50r15 tires is 2270 lbs. tHe difference between the two tires in this regard is 231 lbs.
- It refers to the ratio of the height of the tire’s sidewall to the width of its tread.
- Tires with a higher aspect ratio provides a smoother and more comfortable ride.
- Always choose tires with an aspect ratio that’s appropriate for your vehicle.
The aspect ratio for the 235 75r15 tires is 75. Whereas, the aspect ratio for the 31×10 50r15 tires is 76. The difference between the two tires in terms of aspect ratio is only 1 which is not a lot.
- It usually refers to the speed at which the tire is actually traveling.
- In general, the actual speed of a tire is slightly lower than the indicated speed.
- It’s important to be aware of the actual speed of your tires always.
The actual speed for the 235 75r15 tires is 62.14 mph. Whereas, the actual speed for the 31×10 50r15 tires is 57.92 mph. The difference between the two tires in terms of the actual speed is 4.22 mph.
Also Read: 30×9 50r15 vs 235 75r15 Tire Size – Core Comparison
Frequently Asked Questions
Vehicle owners around the world ask many important questions. Some of the most frequently asked questions are given below: –
What Is the Difference Between 31×10.50R15 and 235 75R15 Tire Sizes?
The main difference between these two tire sizes is their dimensions. The 31×10.50r15 tire has a width of 31 inches, a sidewall height of 10.50 inches, and fits on a 15-inch diameter rim. The 235 75r15 tire has a width of 235 millimeters, a sidewall height of 75% of the width, and also fits on a 15-inch diameter rim.
Which Tire Size Is Taller between 31×10.50R15 and 235 75R15?
The 31×10.50R15 tire is taller than the 235 75r15 tire. The overall diameter of the 31×10.50R15 tire is approximately 30.9 inches, while the overall diameter of the 235 75r15 tire is approximately 28.9 inches.
Which Tire Size Is More Common in the Market, 31×10.50R15 or 235 75R15?
The 235 75r15 tire size is more common in the market than the 31×10.50r15 tire size. The 235 75r15 tire size is used on many SUVs, light trucks, and vans, while the 31×10.50r15 tire size is commonly used on off-road vehicles and modified trucks.
Which Tire Size Is Wider between 31×10.50R15 and 235 75R15?
The 235 75r15 tire is wider than the 31×10.50r15 tire. The 235 75r15 tire has a width of 235 millimeters (approximately 9.25 inches), while the 31×10.50r15 tire has a width of 31 inches (approximately 787 millimeters).
In conclusion, choosing between 31×10 50r15 and 235 75r15 tire sizes depends on your vehicle’s specific requirements and your driving preferences. Both tire sizes have their unique advantages and disadvantages, and it’s essential to consider them before making a final decision.
Ultimately, the tire size you choose will depend on your individual needs and preferences. If you’re an avid off-roader or frequently drive on rough terrain, the 31×10 50r15 tires may be the best choice.
But if you’re looking for a more affordable and comfortable ride for your daily commute, the 235 75r15 tires may be the way to go. Learn more here.