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OE#C2P12622/T2R5940/YH21256
Private Label, Customized Label
8708309990
Company Profile
Products
ECE R90 Compliance: Meets EU and global safety standards, passing thermal cycle tests (-40°C to 300°C) and dynamic load verification, ensuring legal compliance for vehicle maintenance and repair.
Optimized Grooved Design: 6–8 radial slots enhance debris evacuation; paired with a ventilated vane structure (most models), heat dissipation efficiency is 30% higher than solid discs, reducing brake fade risk.
Premium Material & Coating: Adopts G3000 high-carbon cast iron (wear-resistant, high thermal conductivity) with zinc-nickel/Geomet anti-corrosion coating, passing 500-hour salt spray tests to resist road salt and moisture.
OE-Grade Compatibility: Precise dimensional machining (bolt hole pitch, disc thickness) matches OE specs, supporting direct bolt-on installation without modifying the original brake system.
NVH Optimization: Non-directional friction surface machining + built-in damping shims reduce braking noise to ≤38dB, maintaining cabin comfort.
Safety Compliance: ECE R90 certification eliminates legal risks for repair shops and vehicle owners, meeting roadworthiness inspection requirements in Europe, Asia, and America.
Stable Braking Performance: Grooves and ventilation prevent fade during frequent urban stops or mountain downhill driving, shortening emergency stopping distance by 5–8% vs. standard solid discs.
Long Service Life: High-carbon cast iron resists wear (service life up to 60,000 km for daily use), while anti-corrosion coating reduces rust-related replacement costs.
All-Weather Adaptability: Grooves break water film in rainy conditions, maintaining friction coefficient stability—avoiding "brake delay" in wet weather.
Universal Application: Compatible with 80% of mainstream passenger cars/SUVs (covering MQB, TNGA, FAAR platforms), reducing inventory pressure for auto parts distributors.
Overview
This product is a front grooved brake disc designed for the global automotive aftermarket, carrying ECE R90 certification for compliance with international safety standards. As a high‑quality auto spare part, this disc serves a broad range of passenger vehicles—from compact sedans to SUVs and light trucks—offering consistent braking performance, durable construction, and reliable fitment. The grooved friction surface provides self‑cleaning action that prevents pad glazing, maintains consistent friction, and improves initial bite—particularly valuable for front‑axle applications where braking loads are highest. Available with multiple protective finishes and optional drilling, this disc delivers exceptional value for distributors, workshops, and vehicle owners seeking a quality replacement that balances performance, durability, and cost‑effectiveness.
Understanding the Grooved Disc – Engineering the Surface for Performance
What the Grooves Do
The grooves are precision‑machined channels across the friction surface of the disc.
They serve three primary functions: cleaning, gripping, and cooling.
Cleaning – The Self‑Cleaning Action
As the disc rotates, the grooves wipe across the brake pad surface.
This wiping action removes accumulated brake dust, debris, and gases from the pad‑disc interface.
Without this cleaning action, pad surfaces can become glazed—a polished, hardened layer that reduces friction efficiency.
The self‑cleaning action maintains consistent friction levels over the life of the disc.
Gripping – Improved Initial Bite
The grooves create a slightly interrupted surface that helps the pads grip more effectively.
This results in improved initial bite—the immediate braking response when the pedal is first pressed.
For front‑axle applications, where immediate response is critical, this is a meaningful safety benefit.
Cooling – Enhanced Heat Dissipation
The grooves provide additional surface area for heat to escape from the friction zone.
They also promote airflow across the disc surface, assisting with thermal management.
Reduced operating temperatures contribute to longer pad and disc life.
The Engineering Behind Groove Design
Groove Depth
The depth of the groove affects its cleaning effectiveness and structural impact.
Deeper grooves provide more aggressive cleaning but can reduce the disc's structural integrity.
Winhere's groove depth is engineered to balance cleaning effectiveness with disc strength.
Groove Width
Wider grooves allow more debris to escape but reduce the pad contact area.
Narrower grooves provide more consistent pad contact but may be less effective at debris evacuation.
The width is optimised for passenger vehicle applications.
Groove Orientation
The grooves are typically arranged in a curved or radial pattern.
Curved grooves follow the direction of rotation, promoting continuous cleaning.
The orientation also affects noise characteristics—well‑designed grooves reduce squeal.
Groove Count
The number of grooves affects cleaning frequency and thermal management.
More grooves provide more frequent cleaning but may reduce structural strength.
The count is optimised for the specific disc size and application.
The Grooved Surface – A Technical Perspective for Distributors and Workshops
For Distributors – Product Differentiation
Grooved discs offer a clear performance advantage over standard smooth discs.
The self‑cleaning action provides a tangible benefit that distributors can communicate to customers.
The grooved configuration is a visible feature—customers can see the difference.
For Workshops – Reduced Customer Concerns
Grooved discs help prevent the glazing and noise issues that can arise with smooth discs.
This reduces customer complaints and comebacks.
The consistent performance of grooved discs contributes to customer satisfaction and workshop reputation.
For Vehicle Owners – Consistent, Reliable Braking
The self‑cleaning action ensures stable friction characteristics over time.
Improved initial bite provides a more responsive pedal feel.
Reduced glazing means less risk of braking performance degradation.
Front‑Axle Application – Why Grooves Matter More on the Front
The front axle handles the majority of the vehicle's braking force—typically 60‑80% of total stopping power.
Front brakes generate significantly more heat than rear brakes.
Front pads are subject to more frequent and aggressive wear.
The Grooved Advantage on the Front Axle
The self‑cleaning action is particularly important on the front axle, where pad contamination is more likely.
The improved initial bite provides immediate response—critical in emergency braking situations.
The enhanced cooling helps manage the higher thermal loads on the front axle.
ECE R90 Certification – Independent Safety Verification
ECE R90 is the European regulatory standard for replacement brake components.
The certification requires that the disc's braking performance falls within a specified range of the original equipment.
Fade resistance, stopping distance, and structural integrity are verified under the certification process.
For distributors, ECE R90 certification simplifies product selection and compliance.
For workshops, it reduces liability and provides confidence in product quality.
For vehicle owners, it provides safety assurance.
Surface Protection Options – Adapting to Climate and Usage
Oiled
Light rust‑preventive oil film applied during production for protection during storage and transit.
Easily cleaned before installation with brake cleaner or a suitable solvent.
Suitable for interior storage environments and drier climates.
Painted
Durable paint applied to the hub and outer edges, providing long‑term corrosion resistance.
Maintains a clean, professional appearance over the disc's service life.
Recommended for regions with high humidity, coastal environments, or winter road salt exposure.
Coated
Advanced anti‑corrosion coating (zinc or geometric) offering superior long‑term protection.
The coating gradually wears from the friction area during normal braking while the rest of the disc remains permanently shielded.
The highest level of corrosion protection for demanding environments.
Performance Design Options
Grooved (Standard)
Self‑cleaning, improved initial bite, and enhanced wet‑weather performance.
The standard configuration for this product.
Grooved + Drilled (Optional)
Adds cooling holes across the friction surface for even greater heat dissipation.
The holes also assist in water evacuation and further enhance brake responsiveness.
Suitable for performance‑oriented drivers or demanding driving conditions.
Who Is This Product For?
Aftermarket Distributors
For parts distributors serving the global automotive aftermarket.
The grooved disc offers a clear differentiator from standard smooth discs.
ECE R90 certification adds credibility and simplifies compliance.
Multiple finish and design options allow catering to diverse customer needs.
Workshops and Service Centres
For service centres that work on a broad range of passenger vehicles.
The grooved design and consistent performance reduce customer complaints.
The direct fitment and OEM‑grade quality ensure customer satisfaction.
Fleet Operators
For businesses operating passenger vehicle fleets.
The durable construction and consistent performance reduce maintenance frequency.
The self‑cleaning action reduces the risk of performance degradation over time.
Vehicle Owners
For drivers who want a quality brake disc replacement.
For those who value the performance advantages of grooved discs.
For owners who want a cost‑effective alternative to dealer‑priced parts.
The Importance of Surface Condition – Why Grooved Discs Maintain Performance
How Smooth Discs Degrade Over Time
As smooth discs are used, brake dust and gases accumulate on the pad surface.
The pad surface becomes glazed—hardened and polished.
Glazed pads provide reduced friction, increasing stopping distance.
The disc surface can also become scored or worn unevenly.
How Grooved Discs Maintain Performance
The grooves continuously clean the pad surface, preventing glazing.
Consistent friction is maintained over the disc's service life.
The self‑cleaning action reduces the risk of uneven pad wear and disc scoring.
The result is consistent, reliable braking performance throughout the life of the disc.
Quality Assurance and Manufacturing Standards
Manufactured to OEM‑grade specifications for front‑axle fitment.
Groove geometry and depth controlled to deliver consistent self‑cleaning and bite performance.
Dimensional accuracy verified—run‑out and thickness variation controlled to tight tolerances.
Ventilation vane structure checked for casting integrity (where ventilated).
Surface finish controlled for proper pad bedding and consistent friction.
Corrosion resistance of surface finishes validated through standardised testing.
ECE R90 certified—safety performance verified.
Fitment and Compatibility
Designed for front‑axle applications on a wide range of passenger vehicles.
Suitable for compact sedans, mid‑size cars, SUVs, and light trucks.
Available in various sizes to cover different vehicle platforms.
Grooved configuration with ventilated construction.
Direct replacement—no modifications required.
Consult the product catalogue or contact Winhere with vehicle details for specific fitment confirmation.
Test and Inspection
100% critical dimensions, runout and DTV inspection
Material physical and chemical inspection
Test shear strength, compressibility, density, flatness and parallelism
Test performance and noise/NVH
Catalogue
Certifications
