Choosing the Right Disc Brake Pads for Your 2004-2008 Subaru Impreza
Your complete guide to selecting the best new aftermarket brake pads for your Impreza, WRX, or STI.
- You MUST verify your Impreza's trim (base, WRX, or WRX STI) before buying pads, as they use different brake systems.
- For daily driving, a quality ceramic pad like Akebono Pro-ACT offers a quiet, low-dust experience.
- For spirited driving, consider a performance street pad like Hawk HPS 5.0 or EBC Redstuff for better bite and heat resistance.
- Always replace rotors with pads for the best performance and to avoid vibrations and noise.
Symptoms of Worn Brake Pads
Your Impreza will give you several warning signs when the brake pads are getting low. Ignoring them can lead to more expensive repairs. Look out for these common symptoms:
- Squealing or Screeching: A high-pitched noise when you apply the brakes is often the first sign. This sound comes from a small metal tab called a wear indicator hitting the rotor.
- Grinding Noises: A loud grinding or scraping sound means the pad material is completely gone. This is metal-on-metal contact between the pad's backing plate and the rotor, which can quickly cause serious damage.
- Vibrations or Pulsing: If you feel a shaking in the steering wheel or a pulsing in the brake pedal when you brake, your brake rotors may be warped, often as a result of worn pads.
- Car Pulling to One Side: If your car pulls left or right when braking, it could mean the brake pads are wearing unevenly or a caliper is sticking.
- Longer Stopping Distance: If it feels like it's taking longer to stop your car, your pads may be too thin to create enough friction.
Critical Trim Differences: WRX and STI
The most common mistake is buying the wrong pads for your Impreza's trim level. Base Impreza, WRX, and WRX STI models from 2004-2008 use different brake calipers and require differently shaped pads. The 2004 STI and some 2006-2007 WRX models have different brakes than other years. The STI uses high-performance Brembo calipers which need specific pads. 🎬 See this walkthrough for changing pads on STI Brembo calipers. Always verify your exact model (Impreza, Impreza WRX, or Impreza WRX STI) before ordering parts.
Choosing the Right Aftermarket Brake Pads
Aftermarket brake pads offer a wide range of options that can meet or exceed original equipment (OEM) quality, often at a better price. They allow you to tailor your car's braking performance to your driving style. Pads are generally made from ceramic or semi-metallic compounds.
- Ceramic Pads: These are great for daily driving. They are quiet, produce less dust, and are gentle on brake rotors. Brands like Akebono and Bosch offer excellent ceramic options.
- Semi-Metallic Pads: These offer better performance, especially at high temperatures, making them suitable for spirited driving. They have a stronger bite but can create more dust and noise than ceramic pads.
Brand Tiers for Your Impreza
With so many brands available, it helps to think of them in tiers based on their intended use.
Tier 1: Daily Driver (OEM Equivalent)
These brands provide a balance of performance, low noise, and long life, similar to the original Subaru pads. They are perfect for commuting and everyday use.
- Akebono (Pro-ACT): Highly recommended by owners for being quiet, low-dust, and long-lasting. A top choice for an OEM-quality experience.
- Bosch (QuietCast): A solid choice for daily driving, known for being quiet and reliable.
- Centric/StopTech (Street): Offers great value with reliable performance for everyday use. Many owners pair them with Centric rotors.
- Wagner (OEX): A long-standing brand providing dependable, quality pads for daily use.
Tier 2: Performance Street
For the WRX or STI owner who enjoys spirited driving but still uses their car on the street. These pads offer a noticeable increase in stopping power and heat resistance.
- Hawk (HPS 5.0): A very popular upgrade for WRX owners. They provide a significant improvement in initial bite and fade resistance without the harshness of a full race pad.
- EBC (Redstuff): A ceramic-based performance pad that offers a firm pedal feel, low dust, and good performance when hot.
- StopTech (Street Performance): A well-regarded entry into performance pads, offering a good step up from stock for aggressive street driving.
- Powerstop (Z23 Evolution): Often sold in kits with rotors, these are a popular all-in-one upgrade for drivers seeking better performance than stock.
Tier 3: Autocross & Track
These pads are designed for high-heat track environments and are often not ideal for street use. They can be noisy and require heat to work effectively.
- Hawk (HP Plus / DTC series): A common choice for autocross and track days, but known to be very loud and dusty on the street.
- EBC (Yellowstuff/Bluestuff): Track-focused pads that can handle high temperatures but may have less bite when cold.
- Ferodo (DS2500): A classic dual-duty pad that works for aggressive street driving and light track use.
Pro Tip: Bedding-In Your New Pads
Properly "bedding-in" your new brake pads is crucial for performance and longevity. This process deposits an even layer of friction material onto the rotor surface. Follow the manufacturer's specific instructions, which typically involve a series of hard stops from various speeds with cooling periods in between. This prevents glazing and ensures a strong, consistent pedal feel.
🎬 Watch: How and why to properly bed your new brakes.Cost of Replacing Disc Brake Pad Sets
| Part Type | Price Range |
|---|---|
| New Aftermarket Pads | $19.67 - $371.69 |
| New OEM Pads | $70 - $200 |
| Shop Labor | $100 - $250 |
Cost estimates are for one axle (front or rear) and can vary by location and vehicle trim (WRX/STI parts are often more expensive).
Frequently Asked Questions
Do I need to replace my rotors with my pads?
It is highly recommended. Installing new pads on old, worn, or warped rotors can cause noise, vibration, and reduced pad life. For best performance and safety, replacing pads and rotors at the same time is the standard practice.
What is the difference between WRX and STI brake pads?
The 2004-2008 WRX STI came with Brembo-branded calipers, which are larger and use a completely different pad shape than the standard WRX or base Impreza calipers. You must buy pads specifically listed for the STI. Some 2006-2007 WRX models also had optional 4-piston front calipers that differ from other years, so always confirm your specific setup.
🎬 Watch: Step-by-step guide to replacing front brakes on your WRX.Are expensive performance pads better for daily driving?
Not necessarily. Track-focused pads can be noisy, dusty, and have poor stopping power when cold, which is most of the time in street driving. For a daily driver, a quality ceramic or mild performance pad from brands like Akebono, Bosch, or Hawk HPS is a much better and safer choice.
Were there any recalls for the 2004-2008 Impreza brakes?
Yes, there was a significant recall for brake line corrosion on 2008 Impreza, WRX, and STI models registered in cold-weather states where road salt is used. Saltwater could splash on the brake lines, causing them to rust and potentially leak brake fluid. While this doesn't affect the pads themselves, it's a critical safety issue for the brake system to be aware of.
Helpful Videos
Technical Specifications
OEM Part Numbers: 26296FG010
Brake pad shape and size are specific to the vehicle's trim level. Base Impreza uses a standard sliding caliper. WRX models often use a 4-piston front caliper ('4-pot'). WRX STI models use larger Brembo-branded calipers. The bolt pattern for the wheels also changed on the STI in late 2004 from 5x100 to 5x114.3, which can affect rotor choice.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Subaru Impreza: