Tire Size 235/65r16 vs 235/70r16
The main difference between tire sizes 235/65R16 and 235/70R16 is their aspect ratio, which is the ratio of sidewall height to tread width represented by the 2nd number in the tire size format.
| / | R |
| / | R |
| Parameter | 235/35 R18 | 205/40 R18 | Differ. |
|---|---|---|---|
| Tire Height | |||
| Section Width | |||
| Circumference | |||
| Sidewall Height | |||
| Revolutions | |||
| Rim Size |
Fitment Guide
The 235/70R16 is 3.3% larger in overall diameter. This exceeds the 3% replacement guideline threshold. So, while the 235/70R16 may physically fit, it could require lifting or levelling modifications to prevent clearance or rubbing issues.
Gas Mileage
The shorter 235/65R16 tire has marginally less rolling resistance from its shorter sidewall and smaller contact patch.
This could provide a minor fuel efficiency benefit over the 235/70R16. The 235/65R16 is the optimal pick for budget-focused drivers where every MPG counts.
Ground Clearance
With its additional 0.46-inch sidewall height, the 235/70R16 tire size gives 7.7% more ground clearance – helpful for navigating rough roads or mild off-roading without scraping or bottoming out the chassis. But it causes a 3.2% lower speedometer reading.
Ride Comfort
The 235/70R16’s extra sidewall cushioning can soften impacts from cracks and potholes. This enhanced absorption provides a more comfortable ride, especially on uneven city streets. The difference is modest but might be noticeable for some drivers.
Speedometer Difference
When the vehicle is travelling at an actual 20 mph speed, the speedometer reads 20.66 mph with 235/70R16 tires fitted.
But with 235/65R16 tires, it reads slightly less at 20 mph due to the larger diameter. This 0.66 mph lower reading is a minor difference drivers can adjust to.
Aesthetics
Visually differentiating the two tire sizes is challenging. The 235/70R16 has a subtly taller sidewall which suits some styles of vehicles better. Overall the difference is very minor and both offer an attractive look.
Handling & Stability
The shorter sidewall 235/65R16 tire affords slightly sharper turn-in response and handling precision. But both sizes deliver responsive, stable handling for everyday driving conditions. Differences only manifest at the limit when pushing hard through corners.
Noise & Vibration
Harsher road impacts and vibrations transmit more readily into the cabin through the 235/65R16’s stiffer sidewall construction.
The extra compliance from the 235/70R16’s sidewall damps vibrations better. But both are reasonably quiet and smooth at highway speeds.
Durability & Wear
With all other conditions equal, the 235/65R16 theoretically exhibits slightly less sidewall flex when cornering or traversing bumps.
This could promote more even treadwear. But differences would be minimal in reality between these two sizes.
Adverse Conditions
Both tires perform similarly in rain, light snow and muddy scenarios. The 235/70R16 has a slight advantage in deep snow or very rugged areas from the extra clearance.
But the 235/65R16’s responsiveness aids slippery condition handling. Overall the differences are minimal.
Can I Use 235/70r16 Instead of 235/65r16?
No, it’s not recommended to use 235/70r16 instead of 235/65r16. The difference in diameter (3.3%) exceeds the generally advised limit of 3%.
Using tires with such a variance may affect the vehicle’s speedometer accuracy and handling. Stick to the recommended size to ensure optimal performance and safety.
What Does 235/70r16 Mean?
The tire size 235/70R16 can be converted to 29×9.3R16 in inches. The tire’s size is usually indicated by a series of numbers and letters. In the case of 235/70R16, the tire is 235 millimeters wide with an aspect ratio of 70%.
This means that the tire’s height is 70% of its width. The letter “R” denotes radial construction, and the tire is designed to fit a 16-inch wheel.
What Does 235/65r16 Mean?
The tire size 235/65R16 is equivalent to 28×9.3R16 in other units of measurement. The tire size 235/65R16 indicates that the tire is 235 millimeters wide, and its height is 65% of its width.
It has radial construction, which is denoted by “R,” and is designed to fit a 16-inch wheel.
How Tall Is A 235/70r16 Tire?
The 235/70R16 tire has a diameter of 28.95 inches or 735.4 millimeters. This measurement refers to the tire’s height from the rim to the top of the tread when properly inflated.
So, a 235/70R16 tire stands about 28.95 inches tall total when mounted and filled to the appropriate air pressure.
How Tall Is A 235/65r16 Tire?
The 235/65r16 tire has a height of approximately 28.03 inches (711.9 mm), measured from one side to the other through the center, as indicated by its diameter. Remember that actual heights may vary slightly between tire brands and models.
How Much Taller Is A 70 Tire Than A 65?
The tire size 235/70r16 is approximately 0.93 inches or 23.5 millimeters taller than the tire size 235/65r16. The 235/65r16 tire has a diameter of 28.03 inches or 711.9 mm.
While the 235/70r16 tire has a diameter of 28.95 inches or 735.4 mm. Therefore, when comparing these two sizes, the 235/70r16 tire stands about 0.93 inches taller than the 235/65r16 tire.
235/70r16 vs 235/65r16
This table compares the two sizes for easy viewing of differences.
Our Observation
Based on the data, the 235/65R16 has minor advantages in fuel efficiency, handling, ride quality, and tread life compared to the 235/70R16.
Meanwhile, the 235/70R16 provides slightly more ground clearance and a smoother ride over large bumps. But overall, real-world performance differences between these tire sizes are small.
Those prioritizing responsiveness and gas mileage gain an edge with the 235/65R16. For the average driver not pursuing extremes, aesthetic preference along with fitment are likely more significant deciding factors. Considering the slight data trends, we recommend the 235/65R16 as the optimal choice.
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.
