Tire Size 285/70r17 vs 265/65r17
Are you considering switching from 285/70R17 to 265/65R17 tires on your vehicle? While these sizes may seem similar, there are some notable differences that can impact performance, handling, and fitment.
- Reduced ground clearance may increase risk of undercarriage damage on uneven roads
- Speedometer will read higher than actual speed, requiring recalibration or correction
- Firmer ride and increased road feel due to shorter sidewall and less tire flex
- Slightly improved fuel efficiency from reduced rolling resistance of narrower tires
285/70r17 vs 265/65r17
Look at this comparison table to help you understand the difference between these options quickly and easily.
Fitment Guide
The new set should be within 3% of the original diameter when replacing tires to avoid clearance issues or speedometer inaccuracies.
The 285/70R17 diameter is 6.6% larger than the 265/65R17, exceeding the 3% limit. The taller 285/70R17 may require modifications like a lift kit to prevent rubbing at full turn.
Ground Clearance
The extra 1.07 inches of sidewall height gives the 285/70R17 1.08 more inches of ground clearance than the 265/65R17.
This added clearance aids off-road driving by reducing scrapes over obstacles. However, it also causes a lower speedometer reading for the 285/70R17.
Gas Mileage
The 265/65R17’s smaller size means less rotational mass and rolling resistance, contributing to better fuel efficiency crucial for daily driving. The larger 285/70R17 is less efficient due to more weight and drag.
Ride Comfort
The 265/65R17’s shorter sidewall transmits more road impacts into the cabin. The 285/70R17’s extra cushioning absorbs bumps better, although both sizes deliver a comfortable ride. The 285/70R17 also absorbs off-road impacts better.
Aesthetics
Visually, the difference is subtle. The 285/70R17 appears slightly “stretched” due to the taller sidewall, suiting the look of trucks and SUVs. The 265/65R17 has a lower-profile appearance.
Handling & Stability
The 265/65R17’s shorter sidewall enhances responsiveness and handling precision on the pavement.
The taller 285/70R17 sidewall flexes more, reducing handling sharpness slightly. Both offer stability, but the 265/65R17 is more agile on-road.
Noise & Vibration
The stiffer 265/65R17 sidewall transmits more road noise and vibration into the cabin. The 285/70R17’s additional flex dampens vibrations, providing a quieter ride. However, the differences are minor.
Durability & Wear
The 265/65R17’s size could allow more even treadwear and longer life. The heavier 285/70R17 puts more stress on components. However, both tires exhibit good durability.
Adverse Conditions
Both tires perform well overall in rain, snow, and off-road conditions. The taller 285/70R17 has a slight advantage off-road from the extra clearance, while the 265/65R17 is a bit more responsive on slippery surfaces.
Speedometer Difference
At the same actual speed, the 265/65R17 displays a lower speedometer reading than the 285/70R17.
For example, at 20 mph actual speed, the 265/65R17 speedometer would read around 18.7 mph. The smaller diameter 265/65R17 tire rotates more times per mile traveled.
What is the Difference Between 285/70R17 and 265/65R17?
The primary difference between 285/70R17 and 265/65R17 tires lies in their overall diameter. The 285/70R17 tires have a diameter of 32.71 inches, while the 265/65R17 tires measure 30.56 inches, resulting in a significant 2.15-inch (-6.6%) decrease when switching to the smaller size.
Can I Use 265/65R17 Instead of 285/70R17?
Using 265/65R17 tires instead of 285/70R17 is not recommended, as the diameter difference exceeds the acceptable 3% range. This could lead to rubbing, clearance issues, and affect vehicle performance.
How Much Taller Is a 285/70R17 Tire Than a 265/65R17?
A 285/70R17 tire is 2.15 inches (54.5 mm) taller than a 265/65R17 tire. The overall diameter of the 285/70R17 is 32.71 inches, while the 265/65R17 measures 30.56 inches.
How Much Wider is a 285/70R17 Tire Than a 265/65R17?
The 285/70R17 tire is 0.79 inches (20 mm) wider than the 265/65R17 tire. The 285/70R17 has a width of 11.22 inches, whereas the 265/65R17 has a width of 10.43 inches.
Our Observations
After analyzing the differences between 285/70R17 and 265/65R17 tire sizes, it’s clear that switching to the smaller tires comes with both benefits and drawbacks.
On the road, the 265/65R17 tires may offer slightly better handling and fuel efficiency, but at the cost of reduced ground clearance and potential ride comfort. Off-road, the narrower tires may struggle with traction and durability in challenging conditions.
Ultimately, the decision to switch tire sizes depends on your specific driving needs and preferences. If you primarily drive on paved roads and value improved handling and minor fuel savings, the 265/65R17 tires could be a viable option.
However, if you frequently venture off-road or prioritize ground clearance and tire protection, sticking with the larger 285/70R17 tires may be the better choice.
Before making a final decision, consider consulting with a tire professional or your vehicle manufacturer to ensure proper fitment and compatibility. By weighing the pros and cons and assessing your individual driving requirements, you can make an informed choice that optimizes your vehicle’s performance and suits your lifestyle.
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.