Tire Size 205/50r17 vs 225/45r17

The main difference between the 205/50R17 and 225/45R17 tires is in their Tread width and sidewall height. The 225/45R17 is wider by 0.79 inches (or 20mm) – a 9.8% increase over the 205/50R17, which potentially provides better traction. Conversely, the 205/50R17 has a slightly higher sidewall height, which might offer a smoother ride, albeit with a minor difference.

205/50r17 vs 225/45r17 Table

This comparison table shows the key differences between 205 50r17 and 225 45r17 tires.

Feature 205/50r17 225/45r17 Difference
Overall Diameter 25.07″ 24.97″ 0.1 (-2.5)
Width inches 8.07″ 8.86″ 0.79 (20)
Circumference 78.76″ 78.45″ 0.31 (-7.85)
Sidewall Height 4.04″ 3.99″ 0.05 (-1.25)
Revolutions 804.44 807.61 3.17 (1.97)
Rim Size 17″ 17″ Same
Rim Width Range 5.5-7.5″ 7.0-8.5″ Different

Overall Diameter
Tire Height of 205 50r17 vs 225 45r17The 205/50r17 tire has a slightly larger diameter of 25.07 inches (636.8 mm) compared to the 225/45r17 tire’s 24.97 inches (634.3 mm). This 0.4% difference may seem negligible, but it does impact ground clearance. The larger diameter of the 205/50r17 tire offers more ground clearance, which is beneficial for off-road driving or navigating rough terrain.

However, the increase in tire height results in a lower speedometer reading. On the other hand, the smaller diameter of the 225/45r17 tire slightly reduces ground clearance, which can increase the risk of scraping the vehicle on obstacles or rough roads. Also, the decrease in tire height results in a higher speedometer reading.

Section Width
Tread Width of 205 50r17 vs 225 45r17Width plays a crucial role in tire performance. The 205/50r17 tire has a width of 8.07 inches (205 mm), while the 225/45r17 tire is wider at 8.86 inches (225 mm) — a 9.8% difference. The increased width of the 225/45r17 tire offers improved traction due to a larger contact patch with the road, which is beneficial during acceleration, braking, and cornering.

However, wider tires may produce more road noise due to the larger contact area. Conversely, the narrower 205/50r17 tire has less surface area in contact with the road, potentially reducing grip, especially in wet or slippery conditions.

Tire Circumference of 205 50r17 vs 225 45r17The 205/50r17 tire has a slightly larger circumference of 78.76 inches (2000.57 mm) compared to the 225/45r17 tire’s 78.45 inches (1992.71 mm). The increased circumference of the 205/50r17 tire will result in a lower speedometer reading. Conversely, the smaller circumference of the 225/45r17 tire will lead to a higher speedometer reading.

Sidewall Height
Sidewall Height of 205 50r17 vs 225 45r17The 205/50r17 tire has a sidewall height of 4.04 inches (102.5 mm), slightly taller than the 225/45r17 tire’s 3.99 inches (101.25 mm). Taller sidewalls, like those of the 205/50r17 tire, act as a buffer, absorbing more road bumps and irregularities, ensuring a smoother ride. They also offer increased traction on snowy or icy roads.

Conversely, the 225/45r17 tire’s shorter sidewalls may result in a harsher ride due to reduced cushioning but give a sportier and more aggressive look.

Revolutions Per Mile
The 205/50r17 tire completes 804.44 revolutions per mile, slightly fewer than the 225/45r17 tire’s 807.61 revolutions. Higher RPM, as seen in the 225/45r17 tire, usually indicates increased wear, as the tire experiences more friction with the road surface, potentially shortening its lifespan.

Conversely, the 205/50r17 tire, with fewer revolutions per mile, covers less distance per rotation, potentially reducing wear and tear and thus extending its lifespan.

Rim Size
Both tires fit on 17-inch rims, but they require different rim widths. The 205/50r17 tire fits on rims with a width range of 5.5-7.5 inches, while the 225/45r17 tire requires a wider rim width range of 7.0-8.5 inches.

Larger rims, suitable for the 225/45r17 tire, usually give a more aggressive, sporty look. Conversely, smaller rims, suitable for the 205/50r17 tire, can offer a more classic or conservative appearance.

Construction Type
Both tires are radial, as indicated by the ‘r’ in their designations. Radial tires are known for their durability and ability to provide a smooth ride.

How much taller is a 225/45r17 tire than a 205/50r17?

Comparing the two tire sizes, the 225/45r17 tire stands at 25.07 inches (636.8 mm) in height, while the 205/50r17 tire measures slightly less at 24.97 inches (634.3 mm). This means the 225/45r17 tire is about 0.1 inches, or equivalent to 2.5 mm, taller than the 205/50r17 tire.

How much wider is a 225/45r17 tire than a 205/50r17?

In terms of width, the 225/45r17 tire spans 8.86 inches (225 mm) wide, whereas the 205/50r17 tire has a width of 8.07 inches (205 mm). Hence, the 225/45r17 tire is approximately 0.79 inches or 20 mm wider than the 205/50r17 tire.

Can I use 225/45r17 instead of 205/50r17?

Typically, a variation of over 3% in overall diameter is not recommended when swapping tires. The overall diameter for the 225/45r17 tire is 25.07 inches (636.8 mm), while that for the 205/50r17 is 24.97 inches (634.3 mm).

The difference between the two diameters is around 0.1 inches or 2.5 mm, translating to a deviation of about 0.4%. This difference falls within the recommended limit.

Therefore you can technically use the 225/45r17 tire instead of the 205/50r17. But remember to always consult a tire or automotive expert before making such changes to ensure safety and vehicle performance.

Can I put a 225/45r17 on a 205/50r17?

Installing a 225/45r17 tire on a rim designed for a 205/50r17 tire depends on the rim width. The recommended rim width range for the 225/45r17 is 7.0-8.5 inches, while the 205/50r17 tire fits on rims with widths ranging from 5.5-7.5 inches.

If the existing rims fall within the broader range, then it is possible to install a 225/45r17 tire on a 205/50r17 rim. However, always consult a professional before making these changes to ensure compatibility, safety, and performance.

Our Observation
Each tire size offers distinct advantages and considerations. The 205/50r17 tire provides more ground clearance, a smoother ride due to its taller sidewalls, and potentially a longer lifespan because of fewer revolutions per mile. However, it offers less traction due to its narrower width.

In contrast, the 225/45r17 tire offers improved traction due to its wider contact patch and a sportier appearance due to its fit on larger rims and shorter sidewalls. Still, it may have a shorter lifespan because of its higher RPM and might lead to a harsher ride due to its shorter sidewalls.

The choice between these tire sizes depends on individual needs, including driving conditions and personal preference. It’s important to note that sticking with tire diameters within a 3% difference from factory recommendations is generally recommended to ensure the vehicle’s optimal performance.

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