Wheel Fitment Guide for Subaru Wrx: Improving Handling and Gaining 10-12 Hp

The Subaru WRX is a beloved performance car known for its rally heritage and impressive handling. One of the most effective ways to enhance the performance of your WRX is through proper wheel fitment. This guide will explore how the right wheels can improve handling and potentially gain you an extra 10-12 horsepower.

Understanding Wheel Fitment

Wheel fitment refers to the compatibility of wheels with your vehicle in terms of size, offset, and bolt pattern. Choosing the right wheels can significantly affect your car’s performance, handling, and aesthetics.

Key Factors in Wheel Fitment

  • Wheel Size: The diameter and width of the wheel.
  • Offset: The distance from the wheel’s centerline to the mounting surface.
  • Bolt Pattern: The arrangement of bolts that secure the wheel to the hub.
  • Load Rating: The maximum weight the wheel can safely support.

Wheel Size

For the Subaru WRX, common wheel sizes range from 17 to 19 inches in diameter. Choosing the right size can help improve grip and handling. Wider wheels can provide better traction but may require modifications to the fenders or suspension.

Offset

Offset plays a crucial role in how the wheel sits in relation to the suspension and fender. A lower offset pushes the wheel further out, which can enhance stability and cornering performance. However, too much offset can lead to rubbing against the fenders.

Bolt Pattern

The Subaru WRX typically has a bolt pattern of 5×100. Ensuring that your new wheels match this pattern is essential for proper fitment. Aftermarket wheels are widely available in this configuration, allowing for customization without sacrificing compatibility.

Benefits of Upgrading Wheels

Upgrading your wheels can lead to several performance benefits, including improved handling, reduced weight, and enhanced aesthetics. Here are some key advantages:

  • Improved Handling: Lighter wheels reduce unsprung weight, improving suspension response.
  • Increased Traction: Wider wheels can provide a larger contact patch with the road.
  • Enhanced Aesthetics: Custom wheels can give your WRX a unique look.
  • Potential HP Gain: Proper wheel fitment can improve aerodynamics and reduce rolling resistance.

Choosing the Right Wheel for Your WRX

When selecting wheels for your Subaru WRX, consider the following factors:

  • Driving Style: Choose wheels that match your driving habits, whether it’s daily driving or track use.
  • Budget: Set a budget for your wheel purchase, including potential installation costs.
  • Material: Consider whether you want aluminum alloys or forged wheels for weight savings and strength.
  • Brand Reputation: Research brands known for quality and performance in the aftermarket wheel market.

Installation and Maintenance

Proper installation is crucial for safety and performance. It is recommended to have wheels installed by a professional to ensure correct torque settings and alignment. Additionally, regular maintenance checks can help prolong the life of your wheels.

Torque Specifications

For the Subaru WRX, the recommended torque specification for wheel lug nuts is typically around 90-100 ft-lbs. Always consult your vehicle’s manual for the exact specifications.

Regular Inspections

Inspect your wheels regularly for signs of damage, such as cracks or bends, especially after hitting potholes or curbs. Keeping your wheels clean and free of debris can also help maintain their appearance and performance.

Conclusion

Upgrading the wheels on your Subaru WRX is an excellent way to enhance handling and potentially gain extra horsepower. By understanding the importance of wheel fitment and considering factors like size, offset, and material, you can make informed decisions that improve your driving experience. Whether you’re hitting the track or cruising the streets, the right wheels can make all the difference.