Tire Size 235/75r15 vs 225/75r15
The main difference between the two tire sizes is the section width. The 235/75R15 tire is 0.4 inches (10 mm) wider and has a 0.3 inches (7.6 mm) taller sidewall than the 225/75R15 tire. This will result in a slightly wider stance and a slightly softer ride.
| / | R |
| / | R |
| Parameter | 235/35 R18 | 205/40 R18 | Differ. |
|---|---|---|---|
| Tire Height | |||
| Section Width | |||
| Circumference | |||
| Sidewall Height | |||
| Revolutions | |||
| Rim Size |
Fitment Guide
Replacement tires should be within 3% of the original tire’s overall diameter to avoid clearance issues or speedometer inaccuracies.
The 235/75R15 is 2% larger in overall diameter than the 225/75R15, so it meets the 3% fitment guideline. Larger variations may require modifications like leveling kits to prevent rubbing.
Ground Clearance
The 235/75R15 provides 0.3 inches (7.6 mm) more ground clearance thanks to its taller sidewall. This extra clearance is useful for off-road driving, navigating rough terrain, and avoiding scrapes.
However, the larger diameter causes a 2.1% lower speedometer reading. The 225/75R15 reduces clearance slightly, increasing the risk of damage but giving a 2.1% higher speedometer reading.
Gas Mileage
The narrower 225/75R15 tire has a smaller contact patch and less rotational mass, conferring slightly better fuel efficiency. This can benefit daily drivers and long trips.
The wider and larger 235/75R15 may have more rolling resistance and inertia, reducing mpg slightly.
Ride Comfort
While the 225/75R15 offers a smooth highway ride, the 235/75R15 extra sidewall cushioning provides superior impact absorption. This translates into a more comfortable ride over uneven terrain.
Aesthetics
Visually, the difference is minor. The 235/75R15 will have a slightly taller sidewall, giving a subtly “stretched” look.
Some vehicles suit this aesthetic over a low-profile appearance. Subjectively, the taller sidewall fits trucks and SUVs well.
Handling & Stability
The shorter 225/75R15 sidewall enhances handling precision and turn-in response. But both sizes deliver responsive, stable handling for everyday driving. Off-road, the 235/75R15 extra flex improves stability and traction.
Noise & Vibration
With a stiffer sidewall, the 225/75R15 transmits more road noise and vibration into the cabin.
The 235/75R15 flexible sidewall dampens vibrations, but its aggressive treads might generate slightly more noise. Overall, both provide a comfortable, quiet ride.
Durability & Wear
The narrower 225/75R15 may exhibit more even treadwear and slightly longer service life. The larger 235/75R15 handles more impact, but its added weight could accelerate wear on suspension components.
Adverse Conditions
The narrower 225/75R15 can cut through to the pavement more easily in snow. But in mud, sand, and off-road conditions, the wider 235/75R15 provides better traction. Both handle rain well.
Speedometer Reading
At an actual speed of 20 mph, the 235/75R15 reads 19.59 mph on the speedometer due to its larger diameter. The 225/75R15 reads 20 mph. This 2.1% difference should be considered to avoid speeding tickets.
Can I Use 235/75r15 Tires Instead of 225/75r15?
Yes, you can use 235/75R15 tires instead of 225/75R15 tires safely in this case. Using 235/75r15 tires instead of 225/75r15 results in a 2% diameter difference, within the recommended 3% limit.
It’s generally acceptable, considering a variance of up to 3%. However, always consult your vehicle’s specifications and ensure adequate clearance for the slightly larger diameter.
What Is The Diameter of A 225/75r15 Tire?
The 225/75r15 tires have a diameter of 28.29 inches (718.5 mm), also called the tire’s height. The diameter of a tire is the distance from one side to the other, passing through the center. This height may vary by brand and model of the tire.
How Tall Are 235/75r15 Tires?
The 235/75R15 tires have an overall height of approximately 28.88 inches or 733.5 millimeters from one sidewall to another when properly mounted and inflated.
This measurement determines how tall the tires are on a vehicle and allows you to evaluate if there is enough clearance for their intended use.
What Does 235/75R15 Mean?
The tire size “235/75R15” gives us specific information about its dimensions. The first number, 235, indicates the tire’s width in millimeters.
The second number, 75, represents the sidewall height as a percentage of the tire’s width, which is called the aspect ratio.
The letter “R” signifies that it is a radial tire, which is a common type of tire construction. Lastly, the number 15 denotes the diameter of the wheel in inches that the tire is designed to fit.
The tire size 235/75R15 can be expressed equivalently as 28.9×9.3R15 in inches. These specifications provide a comprehensive understanding of the tire’s size and compatibility.
225/75r15 vs 235/75r15
This comparison table is designed to help you easily understand the differences between the options.
What Does 225/75R15 Mean?
The 225/75R15 tire size signifies a radial tire with a width of 225 millimeters and an aspect ratio of 75%. This means the tire’s height from rim to tread is 75% of its 225mm width or 169mm.
The R indicates radial construction and the 15 designates it fits a 15-inch diameter wheel rim. The tire size 225/75R15 can be expressed as 28.3×8.9R15 in inches. Overall, it describes the tire’s dimensions to ensure compatibility with the given wheel diameters.
How Much Taller Is A 235 Tire Than A 225?
The 235 tire is 0.59 inches, or 15 mm, taller compared to the 225 tire. This is a difference of 2% between the sizes. The 235 measures 28.88 inches in height, while the 225 comes in at 28.29 inches in height. The height of a tire is the distance from one side to the other through the center.
How Much Wider Is A 235/75r15 Tire Than A 225/75r15?
The 235/75R15 tire is 0.39 inches, or 10 mm, wider than the 225/75R15 tire. This equates to a 4.3% difference in width between the two tire sizes.
Specifically, the 235/75R15 measures 9.25 inches across in width, while the more narrow 225/75R15 comes in at 8.86 inches wide.
What Size Rim For 235/75r15?
The 235/75r15 tire size requires a rim that’s 15 inches in diameter. To ensure the best fit, it’s recommended that the rim’s width falls between 6 to 8.50 inches.
What Size Rim For 225/75r15?
The size of a tire’s rim is usually measured in inches as the diameter of the wheel. The tire size 225/75R15 is meant to fit a 15-inch rim. Typically, the recommended rim width for this tire size falls between 6 to 8 inches.
Our Observation
Based on our observation of 235/75r15 vs 225/75r15, the 235/75R15 is best suited for vehicles frequently driving off-road or on rough terrain thanks to its added ground clearance, cushioned ride, and improved traction.
The 225/75R15 excels for highway cruising and daily commuting, providing responsive handling, even wear, and slightly better fuel economy.
Overall, we recommend the 235/75R15 for trucks, SUVs, and vehicles going off-road, where the extra clearance and absorption are beneficial.
For cars and daily drivers mainly staying on pavement, the 225/75R15 is likely the better choice for its blend of ride comfort, handling, and efficiency.
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.
