RDA Brakes · Part number RDA8457 · NZ$316.00 incl. GST
When you're wrangling a beast like the Mercedes-Benz GLS 350 d or GLE 350 d, top-notch Disc Brake Rotors are an absolute must-have for shedding heat and giving your brake pads a solid surface to grab onto, making sure your stopping power is always spot-on and safe as houses. This RDA option?
NZ$316.00 including GST. Part number RDA8457.
Disc Brake Rotor Replacement Guide — Featuring RDA: Keeping Your Mercedes-Benz Stopping Sweet
> Alright, let's talk rotors — these are the trusty metal discs your brake pads squeeze to bring your big rig to a halt. For those hefty, high-performance Mercedes-Benz SUVs like your GL-Class or M-Class, these discs are put through the wringer, copping massive heat and stress. If they get warped, cracked, or just plain worn out, your braking goes a bit pear-shaped, and that's not what we want on our Kiwi roads.
Heard These Grumbles?
• Feeling a judder or pulse through the brake pedal or steering wheel when you hit the anchors.
• Nasty squealing, grinding, or scraping noises when you're braking.
• Taking longer to stop, or that brake pedal feels a bit too squishy for comfort.
• Spotting grooves, scores, or even blue spots on the rotor surface — that's a tell-tale sign.
Will it pass WOF?
No way, mate. If your brake rotors are looking rough — severely worn, warped, or damaged — your Mercedes-Benz won't be getting its Warrant of Fitness here in Aotearoa. Good braking isn't just a suggestion; it's a fundamental safety requirement.
DIY or Workshop?
Difficulty: 6/10 (Intermediate — a bit of a challenge, but totally doable for the keen DIYer)
Estimated Time: 1-2 hours per axle (grab a cuppa halfway through!)
Tools Required: Jack, sturdy jack stands (safety first!), wheel nut wrench, brake caliper compression tool, socket set, torque wrench, wire brush, brake cleaner.
🛠️ Bob's "Get It Done Right" Companion Checklist
Before you dive under that beautiful Benz, let's make sure you've got everything you need for a smooth, safe job:
• Safety Glasses: Don't be a hero, protect those peepers from flying crud!
• Heavy-Duty Nitrile Gloves: Keep your hands clean and grippy, and those nasty brake dust particles off your skin. Grab a pair here.
• Brake Cleaner Spray: Essential for blasting away carbon dust, grease, and grime for a pristine finish. Find some top-notch Brake Cleaner in Bob's shop.
• Anti-Seize Caliper Grease: A little dab'll do ya to prevent seizing and keep things moving freely. Avoid putting this on the rotor surface!
Expert Recommendation
Here at CARFIX, we completely get it — when you're driving a premium SUV like your Mercedes-Benz, reliable braking isn't just nice to have, it's non-negotiable. Worn-out rotors don't just mess with your stopping power; they can also chew up other bits of your braking system. We always recommend swapping out rotors in pairs (that's one for each side of an axle) to keep your braking nice and balanced. The RDA RDA8457 is a fantastic pick, known for its quality and durability, and it's built to handle whatever your Mercedes-Benz throws at it. Bob @ CARFIX is always keen for a yarn and can help you figure out exactly what part your Mercedes-Benz needs. Pop into Bob's Shop for a chat — he's always got the kettle on!
Fitment Notes
This particular RDA disc brake rotor is tailor-made for the front axle of a few Mercedes-Benz SUV models, specifically the GLS 350 d (2015-2019), GLE 350 d (2015-2018), M-CLASS ML 500 (2012-2015), and the GL-CLASS GL 350 CDI / BlueTec (2012-2015). Always, always double-check the fitment against your vehicle's exact specs — that includes the production date and any specific chassis codes, because even within the same model, there can be subtle variations.
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🛠️ Bob's Pro Tip: Do the Job Right!
🧰 What Else You'll Need:
• Safety First: Never work under a vehicle supported only by a jack. Always secure it on heavy-duty safety jack stands.
• Brake Dust Protection: Keep a pack of Nitrile Gloves handy to protect your hands from grease and dust.
• Clean and Prep: Use Brake Cleaner to clean the anti-corrosion shipping oil off the new rotors before mounting the calipers.
• Lubrication: Apply caliper grease to caliper slide pins and pad contact points to prevent squealing.