TRW · Part number DF4790S · NZ$372.00 incl. GST
For your robust Land Rover Discovery or Range Rover Sport, these TRW Disc Brake Rotors are the real deal, providing that crucial friction surface for your brake pads to grab onto, ensuring you can slow down and stop safely, whether you're tackling the daily commute or hauling a trailer through the tough Kiwi backcountry.
NZ$372.00 including GST. Part number DF4790S.
Disc Brake Rotor Refresh: Your Guide to Smooth Stopping with TRW
> Right then, let's talk rotors! These are those shiny metal discs spinning with your wheels. Give that brake pedal a nudge, and your pads squeeze 'em tight, creating the friction that slows your Land Rover Discovery or Range Rover Sport right down. Over time, all that heat and friction can thin 'em out, warp 'em, or carve some nasty grooves – not ideal for stopping, especially with a hefty SUV that's often towing or exploring our rugged New Zealand landscapes.
What's Telling You It's Rotor Time?
• 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 brake.
• Taking a bit longer than usual to pull up.
• Seeing obvious scoring, grooves, or funny discolouration on the rotor surface.
• A brake pedal that feels a bit too soft or spongy.
Will these pass the WOF?
Absolutely not, mate! Worn-out or damaged brake rotors are a big no-no for your New Zealand Warrant of Fitness (WOF). The WOF check is super strict on brake performance, making sure your rotors are thick enough and in good nick. If they're under the minimum thickness, warped, or badly grooved, you'll fail the WOF – and rightly so, as they're a serious safety hazard.
DIY or Workshop?
Difficulty: 6/10 (Moderate – not for the faint-hearted!)
Estimated Time: 1-2 hours per axle (if you've done a few before)
Tools Required: Jack, sturdy jack stands (safety first!), wheel nut wrench, brake caliper compression tool, socket set, torque wrench, brake cleaner, wire brush, and maybe an impact wrench if those bolts are stubborn. While a keen DIYer can tackle this, getting those torque settings spot on and bleeding the brakes correctly is absolutely critical for safety. If you're not 100% confident, a trusty workshop is definitely the safer bet.
🛠️ Bob's "Get It Done Right" Companion Checklist
Before you dive into changing those rotors, let's make sure you've got everything you need for a safe and clean job:
• Safety Glasses: Keep those peepers protected from flying debris and brake dust! Safety Glasses
• Heavy-Duty Nitrile Gloves: No one wants mucky hands, and these protect against brake dust and other grime. Nitrile Gloves
• Brake Cleaner Spray: Essential for blasting away carbon dust and getting everything squeaky clean after the job. Brake Cleaner
• Anti-Seize Caliper Grease: A dab of this on the caliper slide pins ensures smooth operation and prevents seizing down the track. Caliper Grease
• Rust Penetrant Spray: If those caliper bolts are looking a bit rusty, a spray of something. Rust Penetrant
Remember, never get under a car supported only by a jack! Always use sturdy jack stands.
Bob's Expert Recommendation
Here at CARFIX, we know that top-notch braking isn't just a nice-to-have – it's an absolute must, especially for legends like your Land Rover Discovery or Range Rover Sport, which often carry precious cargo or tackle some demanding conditions. Worn-out brake rotors don't just compromise your safety; they can also chew through your other braking bits prematurely. We'll always recommend swapping out those rotors the moment they show signs of wear or dip below their minimum thickness.
These TRW brake rotors? They're a brilliant pick, renowned for their quality, durability, and performance, guaranteeing you consistent and reliable stopping power for your Land Rover. Bob @ CARFIX is always ready for a yarn to help you pinpoint exactly what part your Landy needs. Pop on over to Bob's Shop for a chat – he’s keen to help you get sorted!
Fitment Notes
These specific TRW disc brake rotors are tailored for various Land Rover Discovery models (ranging from 2004 to 2018) and Land Rover Range Rover Sport D (2005-2013). Always, always double-check the exact fitment for your specific vehicle's year, engine size, and trim level. Rotor specs can vary wildly even within the same model range, especially for different engine types like the TD, V8, or V6 variants. Don't get caught out!
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🛠️ Bob's Pro Tip: Do the Job Right!
> If you're swapping out these parts on your vehicle Discovery, always install fresh brake pads. Check out our compatible TRW Brake Pads (SKU GDB1631) to ensure a perfect bed-in and get the job done properly first time!
🧰 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.