Lexus CT200h Brake Discs: Specs, Fitment & Wear Symptoms

On the CT200h, continuous brake vibration has genuinely been documented persisting for years on related models despite repeated rotor and pad replacements.

Illustration for editorial purposes

OEM Part Number: 43512-47040

Genuinely worth knowing: owners have directly reported difficulty distinguishing the two rear disc sizes (259mm and 279mm) for the same car. The reliable way to confirm: the minimum thickness (and often the diameter) is stamped directly into the outer ring of the disc itself — check this rather than guessing, or provide your VIN to a dealer.

Front disc, genuine reference (2011-2017)	Lexus OEM: 43512-47040 — 255mm diameter, vented, 25mm thickness, 23mm minimum
Rear disc, 279mm (genuine reference)	Lexus OEM: 42431-52160 — solid, 10mm thickness, 9mm minimum
Rear disc, alternative size	259mm diameter, solid, 9mm thickness, 7.5mm minimum — confirm which applies via the stamp on your actual disc
Genuine rear brake pad set	Lexus OEM: 04466-76012

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.

Lexus CT200h 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 CT200h typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

A Genuinely Useful Piece of Context Worth Knowing About Persistent Vibration

If a vibration under braking has survived multiple rotor replacements, this is genuinely worth knowing: documented cases on related Lexus models describe continuous brake vibration persisting for years despite repeated rotor, pad, and even caliper replacements — worth knowing that repeatedly replacing the same parts isn't guaranteed to resolve the fault if the actual root cause lies elsewhere.

A genuinely useful, specific finding worth knowing: front hub runout, distinct from the rotor itself being warped, can cause this kind of persistent vibration — if a rotor is machined off the car rather than on the vehicle itself, the issue persists regardless of how many new rotors are fitted.

It's also genuinely worth knowing that if a fresh replacement disc shows the identical fault from the very start, the disc itself likely isn't the actual cause, and it's worth cleaning the mating faces between the hub, disc, and wheel thoroughly before assuming a disc is warped.

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 Lexus Brake Discs

The same part, covered across other Lexus models.