Parts Guide
BRAKE DISCS Land Rover Defender · PARTS GUIDE

Land Rover Defender Brake Discs: Specs, Fitment & Wear Symptoms

A genuinely alarming, honest account: a nearly new car with just 10,000 miles had all four discs warp, with the dealer refusing warranty and unable to explain why — plus a genuine account of pads fitted backwards twice, mimicking warped discs entirely.

Illustration of a brake disc Illustration for editorial purposes

OEM Part Number: LR187240

Genuinely important to know: disc size on the current Defender (2020 onwards) is directly tied to the wheel size the car was ordered with, per JLR's own specification — swapping to smaller wheels than originally fitted can mean the new wheels won't clear the discs. Confirm your original wheel size, not just your engine, before ordering.
18" wheels, front / rear discs349mm / 325mm diameter — Land Rover OEM: LR187240 (front)
19" wheels, front / rear discs363mm / 350mm diameter — Land Rover OEM: LR181547 (front)
20"/22" wheels, front / rear discs380mm / 365mm diameter — Land Rover OEM: LR161894 (front)
ImportantBrake calipers are shared across all three wheel/disc size options — only the disc itself changes, not the caliper.

The Part That Pads Depend On

Discs and pads work as a pair, and neglecting one tends to accelerate wear on the other — which is exactly why worn discs so often get discovered during what was meant to be a routine pad change.

Before you buy: disc size and design vary by trim, engine size and whether your car has the standard or "sport" brake package. Always confirm against your VIN before ordering.
Land Rover Defender Brake Discs reference plate

What They Do

Brake discs provide the surface the brake pads clamp against to slow the car, converting momentum into heat through friction. Larger, sportier trims of the Defender typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

A Genuinely Alarming, Honest Real Account Worth Knowing — Land Rover Defender Brake Discs

If a vibration under braking develops on a nearly new car, this is genuinely worth knowing: one documented case saw a car just 10 months old with only 10,000 miles on the clock develop a bad vibration under braking, with a dealer confirming all four discs had warped. The dealer refused to replace them under warranty, couldn't explain why this had happened on such a young car, and couldn't guarantee the same thing wouldn't happen again after any replacement. It's genuinely worth knowing this level of dealer uncertainty on a car this new has been documented, worth pushing back and seeking a second opinion or escalating directly to the manufacturer rather than accepting a warranty refusal on a car this young without a clear explanation.

A genuinely honest, real account worth knowing about an easily overlooked cause: one documented case saw a persistent vibration eventually traced not to warped discs at all, but to brake pads that had been fitted backwards, since pads are genuinely directional. This exact mistake was documented happening twice, from two different specialists, on the same car, before a third specialist finally identified the actual cause — worth confirming any pads have been fitted the correct way round before assuming the discs themselves are at fault.

It's also genuinely worth knowing a useful alternative cause worth checking: an axle seal leaking oil or grease directly onto the disc surface can produce vibration symptoms very similar to genuinely warped discs, without the discs themselves being warped at all — worth checking for this specific kind of contamination before committing to a disc replacement.

Wear Symptoms, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Brake Discs Guide for warning signs to watch for, confirming fitment against your VIN, and choosing a reliable aftermarket disc.

More Land Rover Brake Discs

The same part, covered across other Land Rover models.