Tire Size 295/70r17 vs 305/70r17
Want to upgrade your ride with a fresh set of rubber? Considering jumping from 295/70r17 to 305/70r17 tires? Let’s dive into what that swap really means for your vehicle’s performance, both on and off the beaten path.
- Improved traction and stability off-road due to wider footprint
- Slightly smoother ride on pavement from increased air volume
- Negligible impact on fuel efficiency in daily driving
- Minor increase in ground clearance for better obstacle avoidance
295/70r17 vs 305/70r17
This table will compare the two sizes and help you decide which one is right for you!
Fitment Guide
As a rule of thumb, replacement tires should be within 3% of the original tire’s overall diameter. In this case, the 305/70r17 tires are only 1.7% larger than the 295/70r17 set, so you’re good to go.
On-Road Impact
How will those wider tires handle the highways and byways? Let’s break it down.
- Ground Clearance: With a diameter 0.55 inches (14 mm) larger, 305/70r17 tires will slightly raise your vehicle’s ride height. For most SUVs and trucks, this minor lift won’t impact handling.
- Gas Mileage: The wider 305/70r17 tires have a larger contact patch, which could marginally decrease fuel efficiency. However, the effect is likely to be negligible in everyday driving.
- Ride Comfort: The taller, wider tires may provide a smoother ride, as they have more air volume to absorb bumps and vibrations. You might notice a touch more cushioning over rough roads.
- Speedometer Accuracy: Due to the larger overall diameter, your speedometer will read about 1.6% slower with 305/70r17 tires. At 20 mph, the actual speed will be around 20.33 mph. Keep this in mind, but don’t sweat it too much.
- Durability & Wear: The wider tires distribute weight over a larger area, potentially enhancing durability and even wear. With proper rotation and alignment, 305/70r17 tires could last just as long, if not longer, than 295/70r17 ones.
Off-Road Impact
Thinking about hitting the trails? Here’s what to expect with those upsized tires in the dirt.
- Traction: The wider footprint of 305/70r17 tires provides more grip on loose surfaces like sand, mud, or gravel. You might find your vehicle more sure-footed in challenging conditions.
- Obstacle Clearance: That extra 0.55 inches (14 mm) of diameter could be the difference between clearing a rock or stump and getting hung up. While not a massive change, every bit helps when navigating rough terrain.
- Stability: The wider stance of 305/70r17 tires enhances stability, especially during low-speed maneuvers on uneven ground. Combined with the slight height increase, your vehicle will feel planted and confident off-road.
What is the Main Difference Between 295/70r17 and 305/70r17?
The main difference between 295/70r17 and 305/70r17 tires is width, with the 305/70r17 tires being 0.39 inches (10 mm) or 3.4% wider than the 295/70r17 tires.
Can I Use 305/70r17 Instead of 295/70r17?
Yes, you can generally use 305/70r17 tires instead of 295/70r17 tires, as the difference in overall diameter is only 1.7%, which falls within the acceptable range of 3%. However, always verify your vehicle’s clearance before making the switch.
How Much Taller is a 305/70r17 Tire Than a 295/70r17?
A 305/70r17 tire stands about 0.55 inches (14 mm) taller than a 295/70r17 tire, with the overall diameter increasing from 33.26 inches (844.8 mm) to 33.81 inches (858.8 mm), a difference of 1.7%.
How Much Wider is a 305/70r17 Tire Than a 295/70r17?
The 305/70r17 tires are 0.39 inches (10 mm) wider than the 295/70r17 tires, with the section width increasing from 11.61 inches (295 mm) to 12.01 inches (305 mm), a difference of 3.4%.
Our Observations
After analyzing the specs and considering real-world implications, we believe switching from 295/70r17 to 305/70r17 tires offers several advantages with few drawbacks.
The 3.4% width increase and 1.7% overall diameter difference are within acceptable ranges, meaning fitment issues are unlikely.
On pavement, the wider tires provide a marginally smoother ride and potentially longer tread life, with minimal impact on fuel economy or speedometer accuracy. Off-road, the 305/70r17 tires shine, offering improved traction, obstacle clearance, and stability.
Overall, moving up to 305/70r17 tires is a smart choice for drivers seeking a balance of on-road refinement and off-road capability. As long as your vehicle has sufficient clearance to accommodate the larger size, you can make the switch with confidence.
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.