2020 WRX STI Tire Size Overview
When it comes to the 2020 Subaru WRX STI, tire size is a crucial aspect that can significantly affect performance, handling, and overall driving experience. Understanding the different tire sizes across various trims will help you make informed decisions when it comes time for replacements or upgrades.
Stock Tire Sizes by Trim
The 2020 WRX STI comes in a few different trims, each with its own specifications. Below is a breakdown of the stock tire sizes for each trim level.
| Trim Level | Front Tire Size | Rear Tire Size | Wheel Diameter |
|---|---|---|---|
| WRX STI Base | 245/40R18 | 245/40R18 | 18 inches |
| WRX STI Limited | 245/40R18 | 245/40R18 | 18 inches |
| WRX STI Type RA | 245/40R18 | 245/40R18 | 18 inches |
Common Tire Sizes Explained
The stock tire size for all trims of the 2020 WRX STI is 245/40R18. Here’s a breakdown of what those numbers mean:
- 245 – This is the tire width in millimeters. A wider tire can provide better grip but may affect fuel efficiency.
- 40 – This is the aspect ratio, which is the height of the sidewall as a percentage of the tire’s width. A lower ratio means a shorter sidewall, which usually translates to better handling.
- R – This indicates that the tire is radial, which is the standard for most modern vehicles.
- 18 – This is the diameter of the wheel in inches. The size of the wheel can impact ride quality and handling characteristics.
Performance Considerations
Choosing the right tire size is not just about aesthetics or fitting the wheel well. It directly affects the following aspects:
- Handling: The stock tire size is designed to optimize the WRX STI’s handling. Deviating from this size can lead to understeer or oversteer.
- Ride Comfort: A larger wheel diameter can improve responsiveness but may sacrifice ride comfort. The stock size strikes a balance.
- Speedometer Accuracy: Changing tire sizes can affect your speedometer readings. Sticking to stock sizes ensures accuracy.
Aftermarket Options
If you’re considering aftermarket tires, remember that while you can explore different sizes, it’s essential to keep the following in mind:
- Ensure that the new size fits within the wheel well without rubbing.
- Check that the load rating meets or exceeds the stock tires.
- Consider the impact on handling and comfort before making a change.
The 2020 WRX STI is a performance-oriented vehicle, and the tire size plays a pivotal role in maintaining that performance. Whether you are replacing worn tires or looking to enhance your ride, understanding the stock sizes and their implications will guide you in the right direction.
Exploring the Smallest and Biggest Tire Sizes for the 2020 WRX STI
When it comes to the 2020 Subaru WRX STI, tire size is not just a matter of aesthetics; it plays a critical role in performance, handling, and overall driving satisfaction. While the stock tire size is 245/40R18, many owners are curious about what the smallest and largest tire sizes they can fit on their vehicles without compromising safety or performance.
Stock Tire Size: A Quick Recap
Before diving into the extremes of tire sizing, let’s quickly recap the stock tire size for the 2020 WRX STI:
- Tire Size: 245/40R18
- Wheel Diameter: 18 inches
- Aspect Ratio: 40
This size is designed for optimal performance, offering a balance between grip and ride comfort.
Smallest Tire Size Options
If you are looking to downsize from the stock tire size, the smallest tire size that many owners have successfully used is 225/40R18. Here’s what you need to know:
- Benefits:
- Improved fuel efficiency due to reduced rolling resistance.
- Potentially lighter weight, which can enhance acceleration.
- Drawbacks:
- Less grip compared to stock tires, which can affect handling, especially in cornering.
- May lead to a harsher ride due to a smaller sidewall height.
While some owners report satisfactory performance with 225/40R18 tires, it’s essential to consider your driving style. If you often push your STI to its limits, downsizing might not be the best choice.
Biggest Tire Size Options
On the flip side, if you’re looking to maximize grip and performance, some owners have successfully fitted their WRX STI with tires as large as 255/35R18. Here’s a closer look:
- Benefits:
- Enhanced grip and cornering ability, particularly in aggressive driving situations.
- Wider contact patch provides better traction in various weather conditions.
- Drawbacks:
- Increased risk of rubbing, especially when turning or hitting bumps.
- May negatively impact ride comfort due to a lower sidewall height.
- Potential for increased road noise.
Owner Feedback on Tire Sizes
Forums and owner feedback are invaluable when it comes to understanding real-world performance. Here’s what some WRX STI owners have to say about different tire sizes:
- Stock Size (245/40R18):
- Most owners agree that this size offers the best balance of performance and comfort.
- Excellent for daily driving and occasional track use.
- Smallest Size (225/40R18):
- Some owners appreciate the improved fuel efficiency but note a noticeable drop in grip.
- Best suited for those who prioritize economy over performance.
- Biggest Size (255/35R18):
- Many drivers love the increased grip but warn about the potential for rubbing and a rougher ride.
- Great for track enthusiasts looking for maximum performance.
Best Tires Based on Owner Recommendations
When it comes to choosing the best tires for your 2020 WRX STI, owner feedback points to a few standout options:
- Michelin Pilot Sport 4S: Highly praised for its grip and handling, making it a top choice for performance enthusiasts.
- Continental ExtremeContact Sport: Known for its excellent wet and dry traction, a favorite among daily drivers.
- Bridgestone Potenza RE-71R: A track-focused tire that offers exceptional grip, perfect for those who frequent the racetrack.
Each of these tire options has its strengths and weaknesses, so consider your driving habits and conditions when making a choice. The right tire size and type can make a world of difference in how your WRX STI performs on the road or track.