Tire Size 245/65r17 vs 265/70r17
Are you considering upgrading your tire size from 245/65r17 to 265/70r17? While this change can offer some benefits, it’s important to understand the implications before making the switch.
- Enhanced traction on loose surfaces like sand or gravel
- Slightly better ride comfort due to taller sidewalls
- More aggressive and rugged appearance
- Potential rubbing or clearance issues may require vehicle modifications
- Fuel efficiency gains may be offset by increased tire weight
245/65r17 vs 265/70r17
This comparison table will help you see the main differences between these two tire sizes.
Fitment Guide
The 265/70r17 tires exceed this guideline with a 7% difference. As a result, switching to this tire size is not recommended without making necessary adjustments to your vehicle to prevent potential issues such as rubbing or clearance problems.
On-Road Impact
Switching to larger 265/70r17 tires can have various effects on your vehicle’s on-road performance. Let’s explore some of the key aspects:
- Ground Clearance: The taller sidewall of the 265/70r17 tires will increase your vehicle’s ground clearance by approximately 1.03 inches (26.25 mm). This can be beneficial for navigating rough roads or mild off-road conditions.
- Gas Mileage: The larger tire size will cause your vehicle to have fewer revolutions per mile, which can slightly decrease your gas mileage. The difference in revolutions per mile between the two tire sizes is about 6.5%.
- Ride Comfort: The taller sidewall of the 265/70r17 tires may provide a slightly smoother ride, as the increased tire volume can help absorb road imperfections more effectively.
- Speedometer Accuracy: Due to the change in tire size, your vehicle’s speedometer may not be entirely accurate. At a speedometer reading of 20 mph (32.19 km/h), your actual speed would be approximately 21.4 mph (34.44 km/h).
Off-Road Impact
If you plan to take your vehicle off-road, the switch to 265/70r17 tires can offer some advantages:
- Traction: The wider tread of the 265/70r17 tires, which is 0.79 inches (20 mm) wider than the 245/65r17 tires, can provide improved traction on loose surfaces like dirt, sand, or gravel.
- Obstacle Clearance: The increased tire diameter and sidewall height can help your vehicle clear obstacles more easily when driving off-road.
- Durability: The larger tire size may offer increased durability and resistance to punctures or damage from rocks and other off-road hazards.
What is the Main Difference Between 245/65r17 and 265/70r17?
The main difference between 245/65r17 and 265/70r17 tires is the overall diameter. The 265/70r17 tires are approximately 2.07 inches (52.5 mm) taller than the 245/65r17 tires, which is a 7% increase.
Can I Use 265/70r17 Instead of 245/65r17?
No, its not recommended. The 7% difference in overall diameter exceeds the recommended 3% guideline and may cause fitment issues.
While you can physically mount 265/70r17 tires on a vehicle that originally had 245/65r17 tires, it is not recommended without making necessary adjustments.
How Much Taller Is a 265/70r17 Tire Than a 245/65r17?
A 265/70r17 tire is approximately 2.07 inches (52.5 mm) taller than a 245/65r17 tire. This difference in height is due to the increased sidewall height of the 265/70r17 tire.
How Much Wider is a 265/70r17 Tire Than a 245/65r17?
A 265/70r17 tire is 0.79 inches (20 mm) wider than a 245/65r17 tire. The first number in the tire size designation represents the width of the tire in millimeters.
Our Observation
While switching from 245/65r17 to 265/70r17 tires can offer some benefits, such as improved ground clearance, ride comfort, and off-road capabilities, it’s essential to consider the potential drawbacks. The increased tire size may negatively impact your vehicle’s gas mileage, speedometer accuracy, and overall fitment.
For on-road driving, the differences in performance may be negligible, but the 7% increase in overall diameter could lead to clearance issues if not properly addressed. When it comes to off-road driving, the larger tire size can provide notable improvements in traction and obstacle clearance.
Ultimately, the decision to switch to 265/70r17 tires should be based on your specific needs and preferences. If you prioritize off-road performance and can accommodate the necessary vehicle adjustments, the larger tire size may be a suitable choice.
However, if you primarily drive on-road and want to maintain your vehicle’s original fitment and performance characteristics, it may be best to stick with the 245/65r17 tire size.
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.