Tire Size 195/75r14 vs 195/70r14
The main difference between 195/75r14 and 195/70r14 tire size is the sidewall height. The 195 75r14 tire size is 0.38 inches or 7.1% more than the 195 70r14 tire size. This means that the 195 75r14 tire size has more cushioning for your tires. Let’s dissect these elements and make observations based on their variations.
195/75r14 vs 195/70r14 Table
The table compares the features of tire sizes 195/70R14 and 195/75R14, along with the percentage difference between them.
| Feature | 195/70R14 | 195/75R14 | Difference |
|---|---|---|---|
| Overall Diameter | 24.75″ | 25.52″ | 0.77″ |
| Tread Width | 7.68″ | 7.68″ | 0 (0) 0% |
| Circumference | 77.75″ | 80.16″ | 2.41″ |
| Sidewall Height | 5.37″ | 5.76″ | 0.38″ |
| Revolutions | 814.94 | 790.42 | 24.52 |
| Rim Size | 14″ | 14″ | Same |
| Rim Width Range | 5.0-6.5″ | 5.0-6.5″ | Same |
Overall Diameter
The overall diameter of a tire is the distance from one edge of the tire to the other, passing through the center. In the comparison, the 195/70r14 tire has a diameter of 24.75 inches (628.6mm), while the 195/75r14 measures 25.52 inches (648.1mm), making the latter 0.77 inches (19.5mm) larger. This constitutes a 3.1% difference in size.
A larger tire diameter increases ground clearance, which is beneficial for off-road driving or negotiating rough terrain. It also results in a lower speedometer reading. On the contrary, a smaller tire diameter reduces ground clearance, potentially leading to vehicle damage when driving over obstacles. Moreover, it results in a higher speedometer reading.
Section Width
Section width represents the linear distance between the widest points of a tire’s outer sidewalls, excluding any protective ribs, bars, or decorations. Both 195/70r14 and 195/75r14 tires have the same width of 7.68 inches (195mm).
Circumference
Tire circumference refers to the outer boundary length of the tire. In this case, the 195/70r14 tire has a circumference of 77.75 inches (1974.81mm), while the 195/75r14 tire has a slightly larger circumference of 80.16 inches (2036.07mm), a difference of 2.41 inches (61.26mm) or 3.1%.
An increased circumference leads to lower speedometer readings, while a decreased circumference results in higher speedometer readings.
Revolutions Per Mile
Revolutions per mile (RPM) signify the number of times a tire will revolve within a mile. The 195/70r14 tire makes about 814.94 revolutions per mile, while the 195/75r14 makes approximately 790.42, a difference of 24.52 revolutions per mile.
A higher RPM signifies more wear, as the tire experiences increased friction with the road surface, leading to a potentially shorter lifespan. Conversely, a lower RPM means the tire covers less distance in each rotation, resulting in reduced wear and potentially extending its lifespan.
Sidewall Height
The 195/70r14 tire has a sidewall height of 5.37 inches (136.5mm), and the 195/75r14 has a taller sidewall height of 5.76 inches (146.25mm), a difference of 0.38 inches (9.75mm) or 7.1%.
Taller sidewalls act as buffers, absorbing more bumps and road irregularities, leading to a smoother ride. They also enhance traction on snowy or icy roads. On the other hand, smaller sidewalls may result in a harsher ride with less cushioning effect and give a sportier, more aggressive look.
Rim Size
Both tires compared fit a 14-inch rim size, with a rim width range of 5.0-6.5 inches. Larger rims generally offer a more aggressive and sporty look, while smaller rims tend to provide a more classic or conservative appearance.
Construction Type
In the tire sizes mentioned, ‘r’ signifies radial construction. This is the standard construction type for passenger cars due to its superior comfort and road-handling characteristics.
How much taller is a 195/75r14 tire than a 195/70r14?
The height of a 195/75r14 tire is 25.52 inches (648.1 mm), while the height of a 195/70r14 tire is 24.75 inches (628.6 mm). Hence, the 195/75r14 tire is approximately 0.77 inches (or 19.5 mm) taller than the 195/70r14 tire.
Can I use 195/75r14 instead of 195/70r14?
Generally, using tires with a diameter difference exceeding 3% is not recommended compared to the original tires. The overall diameter of a 195/75r14 tire is 25.52 inches, while the 195/70r14 tire has an overall diameter of 24.75 inches. Calculating the difference between these two tire sizes results in approximately 0.77 inches or roughly 3.1%.
Since this is close to the suggested 3% difference, using a 195/75r14 tire instead of a 195/70r14 might be plausible. However, consulting with a tire or vehicle professional before implementing such changes is crucial to ensure safety and performance.
Can I put a 195/75r14 on a 195/70r14?
The 195/75r14 and 195/70r14 tires both have a suggested rim width range of 5.0-6.5 inches. This means that both these tires can be fitted on the same rim width. Hence, you should be able to mount a 195/75r14 tire on a rim that currently has a 195/70r14.
Our Observation
When choosing between 195/70r14 and 195/75r14, one must consider driving conditions and vehicle use. The 195/75r14, with its larger diameter, increased circumference, and taller sidewall, offers better ground clearance and is more suited to rough terrains or off-road conditions. However, the larger size might lead to increased tire wear.
On the other hand, the 195/70r14 might be a better choice for everyday city driving, with potentially lower tire wear and a higher speedometer reading. But remember, the recommended tire diameter difference should be within 3% of the factory-recommended tires to ensure optimal vehicle performance and safety.
