2018 Subaru WRX Tire Size: What You Need to Know

2018 Subaru WRX Tire Size

If you own a 2018 Subaru WRX, it’s crucial to understand the tire sizes that come with different trims. The right tire size not only affects your vehicle’s performance but also impacts handling, fuel efficiency, and overall driving experience. Let’s break down the tire sizes for each trim level so you can make informed decisions when it comes to replacements or upgrades.

Understanding Tire Size Notation

Before diving into the specifics, let’s clarify how tire sizes are typically represented. You might see something like 245/40R18. Here’s what that means:

  • 245 – The tire width in millimeters.
  • 40 – The aspect ratio, which is the height of the sidewall as a percentage of the width.
  • R – Indicates radial construction.
  • 18 – The diameter of the wheel in inches.

Tire Sizes by Trim Level

The 2018 Subaru WRX comes in several trims, each with its own specifications. Here’s a breakdown of the stock tire sizes for each trim level:

Trim Level Front Tire Size Rear Tire Size Wheel Diameter
WRX Base 245/40R18 245/40R18 18 inches
WRX Premium 245/40R18 245/40R18 18 inches
WRX Limited 245/40R18 245/40R18 18 inches
WRX STI 245/35R19 245/35R19 19 inches

Base, Premium, and Limited Trims

For the Base, Premium, and Limited trims, the tire size is consistent at 245/40R18. This size strikes a good balance between performance and comfort, giving you the grip and handling that the WRX is known for.

WRX STI Trim

On the other hand, the WRX STI takes a step up in size with 245/35R19 tires. This larger size enhances cornering stability and gives the vehicle a more aggressive stance. However, it may sacrifice some ride comfort compared to the smaller tires on the other trims.

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Why Tire Size Matters

Choosing the right tire size is not just about aesthetics. Here’s why it matters:

  • Performance: The right size affects how your WRX handles corners and accelerates.
  • Fuel Efficiency: Incorrect tire sizes can lead to decreased fuel economy.
  • Safety: Properly sized tires ensure optimal contact with the road, which is crucial for braking and traction.

When it’s time to replace your tires, always refer to the manufacturer’s specifications. Deviating from the recommended sizes can lead to issues down the line, including poor handling and increased wear on your vehicle.

In summary, knowing your 2018 Subaru WRX tire sizes by trim can help you maintain optimal performance and safety. Keep this information handy for your next tire purchase or maintenance check.

Smallest and Biggest Tire Sizes for the 2018 Subaru WRX

When it comes to choosing the right tires for your 2018 Subaru WRX, understanding the smallest and biggest options available can make a significant difference in performance, handling, and overall driving experience. Owners often discuss their experiences in forums, sharing insights on what works best for their specific needs. Let’s dive into the details of tire size variations and explore some of the best tire options based on owner feedback.

Smallest Tire Size

The smallest tire size you might consider for the 2018 WRX is the 245/40R18. This size is standard on the Base, Premium, and Limited trims, and it offers a good balance of comfort and performance. While this is not the smallest tire size available in the market, it is the smallest size that fits the WRX without compromising safety or performance.

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Benefits of the Smallest Tire Size

  • Comfort: The 245/40R18 tires provide a cushioned ride, absorbing bumps and imperfections on the road.
  • Versatility: This size works well in various driving conditions, from daily commutes to spirited drives on twisty roads.
  • Cost-Effective: Tires in this size range are often more affordable, giving you a budget-friendly option for replacements.

Biggest Tire Size

On the flip side, if you’re looking to go bigger, the 2018 WRX STI comes equipped with 245/35R19 tires. This size is designed for enhanced performance and handling, making it an attractive option for those who prioritize sportiness in their driving experience.

Benefits of the Biggest Tire Size

  • Improved Handling: The lower profile of the 245/35R19 tires provides better grip during cornering, allowing for more aggressive driving.
  • Aggressive Stance: Larger tires give your WRX a more aggressive look, enhancing its sporty appearance.
  • Enhanced Performance: With a wider contact patch, these tires can improve acceleration and braking performance.

Best Tires Based on Owner Feedback

When it comes to selecting the best tires for your WRX, owner feedback is invaluable. Here are some popular choices that have received positive reviews across various forums:

1. Michelin Pilot Sport 4S

  • Performance: Known for exceptional grip and handling, these tires perform well in both wet and dry conditions.
  • Longevity: Owners report that these tires wear evenly, providing good longevity even with spirited driving.
  • Comfort: Despite being a performance tire, they offer a surprisingly comfortable ride.

2. Bridgestone Potenza RE-71R

  • Track Performance: Highly regarded for track use, these tires offer incredible grip and responsiveness.
  • Shorter Lifespan: While they excel in performance, some owners note that they wear out faster than other options.
  • Heat Management: Great for maintaining performance under high temperatures, making them ideal for track days.
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3. Falken Azenis RT615K

  • Value: Offers a great balance of performance and price, making them a popular choice among budget-conscious enthusiasts.
  • Dry Performance: Excellent grip in dry conditions, though they may not perform as well in wet weather.
  • Stiff Sidewalls: Provides precise handling, which many WRX owners appreciate.

4. Dunlop Direzza ZIII

  • All-Around Performance: A solid choice for both daily driving and occasional track use.
  • Responsive Handling: Owners praise the steering feedback and cornering capabilities.
  • Wet Weather Performance: Performs decently in wet conditions, making it a versatile option.

Choosing the Right Tire Size

When selecting tires for your 2018 Subaru WRX, consider the following factors:

  • Driving Style: Are you using your WRX for daily driving, weekend track days, or a mix of both? Your driving habits will dictate the best tire choice.
  • Climate: Consider the typical weather conditions in your area. Some tires excel in wet conditions, while others are better for dry and hot weather.
  • Budget: Tires can vary significantly in price. Determine how much you’re willing to spend and find the best option within that range.

Understanding the smallest and biggest tire sizes for your 2018 Subaru WRX, along with owner-recommended options, can help you make an informed decision. Whether you prioritize comfort, performance, or a balance of both, there’s a tire out there that will suit your needs.

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