Hey guys! Are you a proud owner of a 2018 Subaru WRX Premium and wondering about the ideal tire size for your ride? You've landed in the right spot! Choosing the right tires isn't just about aesthetics; it's crucial for performance, safety, and overall driving experience. Let's dive into everything you need to know about the 2018 Subaru WRX Premium tire size.

Understanding the Importance of Tire Size

Before we jump into the specifics, let's quickly cover why tire size matters. The tire size affects several aspects of your vehicle's performance:

• Handling and Grip: The right tire size ensures optimal contact with the road, providing better handling and grip, especially in varying weather conditions.
• Ride Comfort: An appropriately sized tire can significantly impact ride comfort. Too small, and you might feel every bump; too large, and you could compromise the suspension.
• Fuel Efficiency: Believe it or not, tire size can affect your gas mileage. The wrong size can increase rolling resistance, leading to lower fuel efficiency.
• Safety: Correct tire size is crucial for maintaining vehicle safety. It ensures accurate speedometer readings and proper functioning of safety systems like ABS and traction control.
• Aesthetics: Let’s be real, the look of your tires matters! The right size can enhance the overall appearance of your WRX Premium.

OEM Tire Size for the 2018 Subaru WRX Premium

So, what's the original equipment manufacturer (OEM) tire size for the 2018 Subaru WRX Premium? The standard tire size is 235/45R17. Let's break down what each of these numbers means:

• 235: This is the section width of the tire in millimeters. It represents the width of the tire from sidewall to sidewall.
• 45: This is the aspect ratio, which is the height of the tire's sidewall as a percentage of its section width. In this case, it's 45% of 235mm.
• R17: This indicates that the tire is a radial tire with a wheel diameter of 17 inches.

Sticking with the OEM tire size is generally a safe bet. The vehicle's suspension and other systems are designed to work optimally with this size. However, there are reasons why you might consider alternative sizes, which we’ll explore later.

Exploring Alternative Tire Sizes

While the 235/45R17 is the recommended size, some owners might consider other options for various reasons. Here are a few scenarios and possible alternative sizes:

Plus Sizing

Plus sizing involves increasing the wheel diameter while decreasing the tire's sidewall height to maintain the overall rolling diameter. For example, you might consider a 245/40R18. This setup can improve handling and give your WRX Premium a sportier look. Keep in mind that plus sizing may affect ride comfort, making it slightly firmer.

Minus Sizing

Minus sizing involves decreasing the wheel diameter and increasing the tire's sidewall height. This is often done in winter to improve ride comfort and snow traction. A possible minus size for the 2018 WRX Premium could be 225/50R17. The taller sidewall can absorb bumps better and provide more grip in snowy conditions.

Wider Tires

Some enthusiasts opt for wider tires to increase grip and improve handling. A size like 245/45R17 could provide a wider contact patch. However, ensure that the wider tire doesn't rub against the suspension or fender wells. Proper wheel offset is crucial when using wider tires.

Choosing the Right Tire: Factors to Consider

Selecting the right tire size involves more than just picking a number. Here are some key factors to consider:

Driving Conditions

• Daily Driving: If you primarily use your WRX Premium for daily commuting, stick with the OEM size or a close variation for balanced performance and comfort.
• Performance Driving: For those who enjoy spirited driving or track days, consider plus sizing or wider tires for enhanced grip and handling.
• Winter Driving: If you live in an area with harsh winters, minus sizing with winter tires can significantly improve safety and traction.

Tire Type

• All-Season Tires: These are a good compromise for year-round use, offering decent performance in various conditions.
• Summer Tires: Designed for optimal grip in warm weather, these tires provide superior handling on dry and wet roads.
• Winter Tires: With specialized tread patterns and rubber compounds, winter tires offer the best traction in snow and ice.

Load and Speed Ratings

Always ensure that the tires you choose have appropriate load and speed ratings for your vehicle. These ratings indicate the maximum weight and speed the tire can safely handle. You can find these ratings on the tire's sidewall.

Budget

Tire prices can vary widely depending on the brand, type, and size. Set a budget and research different options within your price range. Don't compromise on safety to save a few bucks!

Recommended Tire Brands and Models

When it comes to tires for your 2018 Subaru WRX Premium, several brands and models stand out. Here are a few recommendations:

• Michelin Pilot Sport 4S: Excellent summer tire with exceptional grip and handling.
• Bridgestone Potenza RE980AS: A top-performing all-season tire that offers a great balance of performance and comfort.
• Pirelli P Zero All Season Plus: Another excellent all-season option known for its quiet ride and long tread life.
• Blizzak LM-60: For winter, these provide excellent grip in snow and ice.
• Continental VikingContact 7: Another good choice for winter driving, offering superior grip in cold weather conditions.

Proper Tire Inflation and Maintenance

Once you've chosen the right tire size and type, maintaining them properly is crucial for safety and longevity. Here are some tips:

• Check Tire Pressure Regularly: Use a reliable tire pressure gauge to check your tire pressure at least once a month. Refer to the sticker on your driver's side doorjamb for the recommended pressure.
• Rotate Tires: Regular tire rotations help ensure even wear and extend the life of your tires. Follow the recommended rotation pattern in your owner's manual.
• Balance Tires: Imbalanced tires can cause vibrations and uneven wear. Have your tires balanced when you notice vibrations or during rotations.
• Inspect for Damage: Regularly inspect your tires for cuts, bulges, and other damage. Replace any damaged tires immediately.
• Alignment: Ensure your wheels are properly aligned to prevent uneven tire wear and handling issues.

Where to Buy Tires

You can purchase tires from various sources, including:

• Local Tire Shops: These offer personalized service and expert advice.
• Online Retailers: Sites like Tire Rack and Discount Tire offer a wide selection and competitive prices.
• Dealerships: Subaru dealerships can provide OEM tires and professional installation.

Common Mistakes to Avoid

• Ignoring Load and Speed Ratings: Always choose tires with appropriate load and speed ratings for your vehicle.
• Mismatched Tire Sizes: Never mix different tire sizes on the same axle. This can cause handling problems and damage your vehicle.
• Neglecting Tire Pressure: Underinflated tires can lead to poor handling, reduced fuel efficiency, and increased risk of tire failure.
• Skipping Rotations: Failing to rotate your tires can result in uneven wear and shorter tire life.

Conclusion

Choosing the right tire size for your 2018 Subaru WRX Premium is a critical decision that affects performance, safety, and comfort. While the OEM size of 235/45R17 is a reliable choice, exploring alternative sizes can enhance specific aspects of your driving experience. By considering factors like driving conditions, tire type, and budget, you can make an informed decision. And remember, proper tire maintenance is essential for ensuring your tires perform optimally and last longer. Happy driving, folks! I hope this guide helped you find the perfect tire size.