Tire Size 225/45r17 vs 215/50r17
The main difference between the tire sizes 215/50r17 and 225/45r17 lies in their width and sidewall height. The 225/45r17 tire is wider by 0.39 inches (10 mm), offering better traction, while the 215/50r17 tire has a taller sidewall height of 0.25 inches (6.25 mm), which provides better ride comfort. However, the 225/45r17 has a slightly smaller overall diameter and circumference, which could affect speedometer readings and ride height.
225/45r17 vs 215/50r17
The table compares the features of tire sizes 215/50R17 and 225/45R17, along with the percentage difference between them.
| Feature | 215/50r17 | 225/45r17 | Difference |
|---|---|---|---|
| Overall Diameter | 25.46″ | 24.97″ | 0.49″ |
| Width inches | 8.46″ | 8.86″ | 0.39″ |
| Circumference | 80″ | 78.45″ | 1.55″ |
| Sidewall Height | 4.23″ | 3.99″ | 0.25″ |
| Revolutions | 792.01 | 807.61 | 15.61 |
| Rim Size | 17″ | 17″ | Same |
| Rim Width Range | 7.0-8.5″ | 6.0-7.5″ | Different |
Overall Diameter
The diameter of the 215/50r17 tire is 25.46 inches (646.8mm) compared to the 225/45r17, which has a diameter of 24.97 inches (634.3mm). The 215/50r17 tire has a larger diameter of 0.49 inches (12.5mm) or 1.9%. A larger tire diameter provides more ground clearance, beneficial for off-road driving or rough terrain.
However, increasing tire height can result in a lower speedometer reading. Conversely, the smaller diameter of the 225/45r17 may increase the risk of scraping or vehicle damage over obstacles or rough roads, resulting in a higher speedometer reading.
Section Width
The 215/50r17 has a section width of 8.46 inches (215mm), while the 225/45r17 has a slightly larger width at 8.86 inches (225mm), a difference of 0.39 inches (10mm), or 4.7%. A wider tread width generally enhances traction due to a larger contact patch, improving grip during acceleration, braking, and cornering.
It can also create more road noise. The narrower width of the 215/50r17 might offer reduced traction, especially under wet or slippery conditions.
Circumference
In terms of circumference, the 215/50r17 measures 80 inches (2031.98mm) compared to the 225/45r17 at 78.45 inches (1992.71mm), a difference of 1.55 inches (39.27mm) or 1.9%. An increased circumference will result in lower speedometer readings, while a decreased circumference will yield higher readings.
Revolutions Per Mile
The 215/50r17 records 792.01 revolutions per mile (492.13 per km), whereas the 225/45r17 has a higher number at 807.61 (501.83 per km), a difference of 15.61 (9.7) or 2%.
Higher RPM can lead to increased wear due to more friction with the road surface, potentially shortening the tire lifespan. Conversely, the 215/50r17’s lower RPM may result in less wear and tear, potentially extending its lifespan.
Sidewall Height
The sidewall height of the 215/50r17 is 4.23 inches (107.5mm) compared to the 225/45r17 at 3.99 inches (101.25mm), a decrease of 0.25 inches (6.25mm) or 5.8%. The taller sidewall of the 215/50r17 can absorb more bumps and road irregularities, resulting in a smoother ride and increased traction on snowy or icy roads.
However, the shorter sidewall height of the 225/45r17 can give a harsher ride with less cushioning but may provide a sportier, more aggressive look.
Rim Size
Both tires have a 17-inch rim size. Larger rims are often associated with a more aggressive and sporty look, while smaller rims can provide a more classic or conservative appearance. However, the rim width range differs. The 215/50r17 range is 7.0-8.5 inches, whereas the 225/45r17 fits a rim width range of 6.0-7.5 inches.
How much taller is a 225/45r17 tire than a 215/50r17?
The height of a 225/45r17 tire is 24.97 inches (634.3 mm), while a 215/50r17 tire is 25.46 inches (646.8 mm). Thus, the 215/50r17 tire is around 0.49 inches (or 12.5 mm) taller than the 225/45r17 tire.
How much wider is a 225/45r17 tire than a 215/50r17?
The width of a 225/45r17 tire is 8.86 inches (225 mm), in contrast to that of a 215/50r17 tire which is 8.46 inches (215 mm). As such, the 225/45r17 tire is approximately 0.39 inches (or 10 mm) wider than the 215/50r17 tire.
Can I use 225/45r17 instead of 215/50r17?
Generally, it’s usually not recommended to use tires with an overall diameter differing more than 3% from the original tires. The 225/45r17 tire’s overall diameter is 24.97 inches, while the 215/50r17 tire’s diameter is 25.46 inches.
This results in a difference of around 0.49 inches, or about 2%. Since this is less than the advised 3% difference, it would be technically possible to use a 225/45r17 tire instead of a 215/50r17.
Can I put a 225/45r17 on a 215/50r17?
The suggested rim width range for a 225/45r17 tire is between 7.0-8.5 inches, whereas for a 215/50r17 tire it is between 6.0-7.5 inches. While there is overlap in these ranges, it is crucial to ensure the specific rims on your vehicle are appropriate for the tire size you plan to use.
Observation
Considering these factors, the 215/50r17 may be suitable for those seeking more ground clearance, smoother ride comfort, and longer tire life due to its larger diameter, taller sidewall, and fewer revolutions per mile. On the other hand, the 225/45r17, with its wider section width and smaller diameter, is more suited to those seeking improved road grip, higher speedometer readings, and a sportier appearance.
While both tires have their strengths and weaknesses, choosing the one that best suits your driving habits and conditions is important. Also, remember to ensure your choice does not deviate more than 3% from the factory-recommended tire diameter to maintain optimum vehicle performance.
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.
