Tire Size 245/65r17 vs 265/70r17
Thinking about upsizing your tires? Switching from a 245/65r17 to a 265/70r17 can change how your vehicle performs. Let’s explore what this means for you.
- The 265/70R17 offers increased diameter for better ground clearance.
- A wider tire improves traction on various surfaces.
- The larger sidewall height enhances ride comfort over bumps.
- The increased circumference may improve stability at higher speeds.
- Fuel efficiency may decrease due to the larger tire size.
- The wider tire can provide a more aggressive and rugged appearance.
Fitment Guide
According to the Fitment Guide, replacement tires should be within plus or minus 3% of the original diameter. The diameter difference here is 7%, exceeding the acceptable range.
Therefore, this interchange is not recommended without necessary adaptations to prevent issues like rubbing or clearance problems.
On-Road Impact
Changing tire size can greatly affect your vehicle’s on-road performance. Here’s how the switch to 265/70r17 tires might impact your daily drive.
- Ground Clearance: The larger diameter raises your vehicle by about 1.03 inches, increasing ground clearance. This can help you navigate over speed bumps and rough roads more easily.
- Gas Mileage: Bigger tires are heavier and can cause your engine to work harder, leading to decreased fuel efficiency. You might notice a slight drop in miles per gallon.
- Aesthetic Look: The wider and taller tires give your vehicle a more robust appearance. This can be appealing if you prefer a more aggressive look.
- Ride Comfort: Taller sidewalls (a 16.5% increase) mean more cushioning between the wheel and the road. This can result in a smoother ride over bumps and potholes.
- Speedometer Accuracy: With larger tires, your speedometer will read lower than your actual speed. When it shows 20 mph, you’re actually going 21.4 mph. This discrepancy can lead to unintended speeding.
- Handling: The increased size can affect steering response. You might experience less precise handling, especially during quick maneuvers.
Off-Road Impact
If you enjoy off-roading, the larger tires can offer some benefits but also present challenges. Here’s what to consider.
- Traction: The wider footprint can improve grip on loose surfaces like mud or sand. This can enhance your off-road capability.
- Obstacle Navigation: Increased diameter helps in rolling over obstacles more easily. Rocks and logs become less of a hurdle.
- Clearance Issues: The larger tires might rub against the wheel wells or suspension components, especially during articulation. Modifications like a lift kit may be necessary.
- Vehicle Stress: Bigger tires can put extra strain on your vehicle’s drivetrain and brakes. Components may wear out faster if not upgraded accordingly.
245/65r17 vs 265/70r17
This table compares the key features of tire sizes 245/65R17 and 265/70R17.
| Feature | 245/65R17 | 265/70R17 | Difference |
|---|---|---|---|
| Diameter inches (mm) | 29.54 (750.3) | 31.61 (802.8) | 2.07 (52.5) 7% |
| Width inches (mm) | 9.65 (245) | 10.43 (265) | 0.79 (20) 8.2% |
| Circumference inches (mm) | 92.8 (2357.14) | 99.29 (2522.07) | 6.49 (164.93) 7% |
| Sidewall Height inches (mm) | 6.27 (159.25) | 7.3 (185.5) | 1.03 (26.25) 16.5% |
| Revolutions per mile (km) | 682.75 (424.24) | 638.1 (396.5) | -44.65 (-27.74) -6.5% |
| Speedo Reading | 20 mph (32.19 km/h) | 21.4 mph (34.44 km/h) | +1.4 mph |
Difference Between 245/65R17 and 265/70R17
The 265/70R17 tire is 2.07 inches taller and 0.79 inches wider than the 245/65R17 tire, offering more ground clearance and a broader footprint.
Can I Use 265/70R17 Instead of 245/65R17?
Yes, but the 265/70R17 tire is 7% larger in diameter, which may affect your speedometer, fuel efficiency, and handling. Ensure your vehicle can handle the size change before switching.
How Much Taller Is a 265/70R17 Tire Than a 245/65R17?
The 265/70R17 tire is 2.07 inches taller than the 245/65R17 tire, which provides increased ground clearance.
How Much Wider is a 265/70R17 Tire Than a 245/65R17?
The 265/70R17 tire is 0.79 inches wider than the 245/65R17 tire, offering a broader tire footprint for enhanced traction.
Our Observation
Switching from 245/65r17 to 265/70r17 tires brings noticeable changes. On-road, you’ll enjoy increased ground clearance and a smoother ride due to the taller sidewalls.
However, expect a slight decrease in fuel efficiency and a less accurate speedometer. Handling might feel different, but these effects are generally manageable.
Off-road, the benefits are more pronounced. Improved traction and the ability to tackle larger obstacles make for a better off-road experience.
Yet, the 7% increase in diameter exceeds recommended limits, meaning modifications are likely needed to prevent rubbing and maintain safety.
The impact on both on-road and off-road performance is significant and should not be overlooked. If you’re willing to make necessary adjustments, the switch can be beneficial, but it’s not a negligible change.
Asma Akter is the lead writer at Tiresizecompare.com, bringing her expertise to the automotive industry. With a strong background in technical writing and a passion for clear communication, Asma excels at breaking down complex tire-related information for readers. Her work helps consumers make informed decisions about tire sizes and compatibility, contributing to safer and more efficient vehicle operations.
