16/03/2006
When it comes to keeping your beloved Audi A4 B8.5 performing at its peak, few components are as critical as the braking system. With the brake pad wear indicator illuminating after just 28,000 miles, it's a clear sign that a comprehensive brake overhaul is on the horizon. For many Audi owners, this presents a familiar dilemma: which manufacturer offers the best combination of performance, durability, and value? Two prominent names that frequently surface in these discussions are Zimmermann and Akebono. This article aims to dissect the offerings of both, explore alternative options like PowerStop, and provide you with the knowledge to make an informed decision for your daily driver.
- Zimmermann vs. Akebono: A Closer Look
- Considering PowerStop: Drilled and Slotted Excellence
- Rotor Types: Drilled vs. Slotted vs. Plain
- Brake Pad Recommendations: Beyond the Basics
- Brake Fluid: The Unsung Hero
- Where to Buy and Pricing Considerations
- Frequently Asked Questions
- Conclusion: Making the Right Choice for Your Audi
Zimmermann vs. Akebono: A Closer Look
Both Zimmermann and Akebono have carved out respectable reputations in the automotive aftermarket. However, their philosophies and product specialisations differ, influencing their suitability for various driving conditions. Understanding these nuances is key to selecting the right components for your vehicle.
Zimmermann: Precision Engineering from Germany
Zimmermann is a German manufacturer renowned for its high-quality braking components. They are particularly well-regarded for their OE (Original Equipment) quality direct replacements. When considering Zimmermann, you'll often find their rotors are available in a drilled finish. Drilled rotors feature holes that are precisely engineered to help dissipate heat and expel gases and moisture from the braking surface. This can lead to improved performance, especially under demanding conditions, by reducing the risk of brake fade. However, for a daily driver covering a modest 5,000 miles per year, the extreme heat dissipation benefits of drilling might be overkill. Some enthusiasts also point out that drilled rotors can be more susceptible to cracking over time, particularly if subjected to significant thermal stress, though this is less of a concern for a car that isn't tracked.
Akebono: The Quiet Achievers
Akebono, on the other hand, is a Japanese company that is a major supplier of original equipment brake pads to many leading automotive manufacturers, including those in Europe. Their aftermarket pads are often praised for their quiet operation and excellent dust management. If you value a clean wheel finish and a comfortable, noise-free driving experience, Akebono pads are a compelling choice. Their compound formulations are typically designed to balance stopping power with longevity and low noise, making them an excellent option for daily driving duties where extreme performance isn't the primary concern. They generally offer a smooth and progressive pedal feel, which aligns well with the inherent characteristics of many European vehicles.
Considering PowerStop: Drilled and Slotted Excellence
The initial inclination towards PowerStop drilled and slotted rotors is understandable, especially given their popularity and the perceived benefits of their design. PowerStop offers a wide range of brake kits, often combining their rotors with their own brand of pads. The appeal of drilled and slotted rotors lies in their dual functionality. The drilling, as mentioned, aids in heat and gas evacuation, while the slots are designed to sweep away dust and debris, and to keep the pads clean and biting effectively. This combination aims to provide enhanced stopping power and better performance in wet conditions compared to plain rotors.
For a daily driver, especially one that might encounter occasional spirited driving or adverse weather, a drilled and slotted rotor can offer a good compromise. They provide some of the benefits of drilled rotors without the potential drawbacks of excessive cracking, while the slots ensure the pads maintain optimal contact with the rotor surface. The key is to match these with appropriate pads that complement their performance characteristics.
Rotor Types: Drilled vs. Slotted vs. Plain
The choice between drilled, slotted, and plain rotors is a recurring theme for those upgrading their braking systems. Let's break down the advantages and disadvantages:
| Rotor Type | Pros | Cons | Best For |
|---|---|---|---|
| Plain (Blank) | Most affordable, quietest operation, longest lifespan for street use, less prone to cracking. | Can be prone to glazing, heat buildup can be higher, less effective at clearing dust/gas. | Daily driving, low-mileage use, budget-conscious owners. |
| Drilled | Excellent heat and gas dissipation, improved wet weather performance, aggressive appearance. | Can be noisier, more susceptible to cracking under extreme thermal stress, can wear pads faster. | Performance driving, track use (with proper compound pads), those prioritising heat management. |
| Slotted | Clears dust and gas effectively, keeps pads clean, consistent bite, good wet weather performance, less prone to cracking than drilled. | Can cause slight increase in pad wear, may produce a subtle groaning noise under braking. | Enthusiast daily drivers, spirited driving, those seeking a balance of performance and durability. |
| Drilled & Slotted | Combines benefits of both drilled and slotted, superior heat and gas dissipation, excellent dust and gas clearing. | Potentially more expensive, can be noisier than plain, may contribute to faster pad wear. | Aggressive street driving, occasional track use, those wanting maximum performance and aesthetics. |
Given your preference for slotted rotors due to reliability and your driving habits, a high-quality slotted rotor from a reputable brand like Zimmermann (if available in slotted) or PowerStop would be a sensible choice. Plain rotors are also a perfectly viable and often overlooked option for your specific needs, offering longevity and quiet operation.
Brake Pad Recommendations: Beyond the Basics
The discussion around brake pads often centres on stopping power, but factors like noise, dust, and pedal feel are equally important for a daily driver. Akebono is a strong contender for their refinement and low dust. However, it’s worth exploring other reputable brands that cater to a balance of performance and everyday usability.
For a more engaging pedal feel, especially if you find the OEM feel too progressive, exploring performance street pads can make a significant difference. Brands like EBC, Hawk, and Ferodo offer pads that can provide a firmer initial bite and a more direct connection to the braking system. However, it's crucial to research specific pad compounds, as some performance pads can be noisier, produce more dust, or require a certain temperature to operate optimally.
If you're leaning towards PowerStop rotors, their included pads are generally designed to be a good all-around performer for daily driving. Alternatively, pairing PowerStop rotors with Akebono pads could offer a refined and quiet braking experience with the enhanced rotor technology.
Brake Fluid: The Unsung Hero
The mention of brake fluid and bleeding is a critical point. The pedal feel on cars like the B8.5 Audi A4 is often described as progressive, and while it may never achieve the "stiff" feel of some other performance cars, it can certainly be improved. The brake fluid itself plays a vital role here. Over time, brake fluid absorbs moisture, which lowers its boiling point and can lead to a spongy pedal, especially under heavy braking. Replacing the brake fluid with a high-quality, high-boiling-point fluid is essential for maintaining optimal braking performance and pedal feel.
The recommendation for ATE Racing Blue and Motul 660 is spot on. ATE TYP 200 (often referred to as Blue) is a DOT 4 fluid with a high dry and wet boiling point, making it a popular choice for many European cars. Motul RBF 660 is a racing-grade fluid with an exceptionally high boiling point, designed for extreme conditions. For a daily driver, even one that sees occasional spirited driving, ATE TYP 200 or a similar high-quality DOT 4 fluid is usually more than sufficient and offers a noticeable improvement in pedal feel and resistance to fade compared to standard fluid.
The Importance of a Pressure Bleed
The process of bleeding the brakes is as important as the components you choose. A pressure bleeder, like the Motive Euro power bleeder, is highly recommended. This method pushes fluid through the system from the reservoir, forcing air and old fluid out through the bleed screws. This is particularly important for vehicles with ABS units, as it helps to ensure that all the air is purged from the ABS modulator, which can be tricky with traditional vacuum bleeding methods. Proper bleeding ensures that the brake pedal feels firm and responsive, and that the ABS system can function correctly.
Brake Lines: A Subtle Upgrade
For those seeking to further refine pedal feel, upgrading to stainless steel braided brake lines (often referred to as Goodridge lines, though Paragon is also mentioned) can be a worthwhile modification. Unlike rubber hoses, which can expand slightly under pressure, stainless steel lines offer a more consistent and direct transfer of hydraulic pressure to the calipers. This results in a firmer pedal and a more immediate braking response. Paragon's focus on specific fittings and lengths for your car ensures a straightforward installation and optimal performance.
Where to Buy and Pricing Considerations
When it comes to purchasing brake components, finding a balance between price and quality is crucial. As you've noted, RCKAuto often has competitive pricing on PowerStop products, and FCP Euro is a well-respected supplier for a wide range of European car parts, including Akebono pads. When comparing prices, always factor in shipping costs and the reputation of the vendor.
It's also worth checking other online retailers that specialise in automotive parts for Audi, as well as considering local auto parts stores. Sometimes, a slightly higher price at a local store can be offset by immediate availability and knowledgeable staff who can offer advice specific to your vehicle.
Frequently Asked Questions
Q1: Are Zimmermann rotors weak compared to OEM?
No, Zimmermann rotors are generally considered to be of OE quality or better. They are manufactured to high standards and are a reliable choice for replacement parts.
Q2: Will drilled and slotted rotors wear my brake pads faster?
Potentially, yes. The more aggressive surfaces of drilled and slotted rotors can lead to slightly faster pad wear compared to plain rotors. However, for most daily drivers, this difference is often negligible.
Q3: Is Akebono pad dust really that much less than other brands?
Yes, Akebono pads are widely praised for their low dust output and clean wheel appearance. This is a significant advantage for owners who prefer to keep their vehicles looking pristine.
Q4: Can I mix and match brands for rotors and pads?
Yes, you can. Many enthusiasts mix and match brands to achieve a specific balance of performance and cost. For instance, pairing PowerStop rotors with Akebono pads is a common and often effective combination.
Q5: How often should I replace my brake fluid?
It's generally recommended to replace brake fluid every 2 to 3 years, or as specified by your vehicle's manufacturer. Even if the fluid looks clean, it absorbs moisture over time, reducing its boiling point.
Conclusion: Making the Right Choice for Your Audi
For your 2015 Audi A4 B8.5, with its modest annual mileage, a balanced approach to brake replacement is key. Akebono pads offer refinement and quiet operation, making them an excellent choice for daily driving. For rotors, you have several strong options. If you prefer the look and some of the performance benefits of drilled or slotted rotors without the potential downsides for a daily driver, PowerStop drilled and slotted rotors are a solid contender. Alternatively, if Zimmermann offers a high-quality slotted rotor that fits your budget, it would also be a very good choice. Plain rotors from a reputable brand would also serve you exceptionally well, offering longevity and quietness.
Crucially, don't underestimate the impact of fresh, high-quality brake fluid and a proper bleeding procedure. This, combined with suitable brake lines, can significantly enhance pedal feel and overall braking performance, ensuring your Audi remains a safe and enjoyable vehicle to drive.
If you want to read more articles similar to Zimmermann vs Akebono: Which Brakes Are Best?, you can visit the Brakes category.