1998-2007 Lexus LX470 Front vs Rear Brakes: What Wears First and What to Replace

By Core Brake Parts Tech Team — Circleville, OH warehouse

On a 1998-2007 Lexus LX470 the front brakes almost always wear out first, usually by a wide margin, because the front axle does most of the stopping on a heavy, nose-down SUV. The rear is also a disc system, but it hides a separate drum-style parking brake inside each rear rotor, so a rear brake job on this truck has a few extra parts to check. Here is how the two ends differ and what belongs in each job.

How the LX470 Brake System Is Laid Out

The LX470 shares its chassis and brakes with the 100-series Toyota Land Cruiser, and parts for the two are commonly listed as interchangeable. All four wheels use disc brakes with vented rotors. The front calipers are larger than the rears and do the bulk of the work, and the pads are held in the caliper with retaining pins and hardware that should be inspected at every pad change.

At the rear, a separate set of calipers clamps the rear rotors for normal stops. The rear rotor is a drum-in-hat design: the center hat of each rotor doubles as a small brake drum, and a pair of parking brake shoes lives inside it. Lexus lists those shoes separately for the LX470, as a left-side shoe (46580-60050) and right-side or center shoes (46540-60050 and 46550-60060), all fitted to the 1998-2007 LX470 with the 4.7L V8. That means the rear service brakes and the parking brake wear independently of each other.

Why the Front Wears First

When you brake, weight transfers forward onto the front tires. The front tires then have more grip, so the system is designed to send more braking force to the front. On a tall, heavy vehicle like the LX470 that transfer is pronounced, and the front pads and rotors absorb most of the heat on every stop.

• Front pads are normally the first brake part an LX470 owner replaces.
• Front rotors take the most heat, so they are the ones most likely to warp, develop thickness variation, or wear below the minimum thickness cast into the rotor.
• Rear pads last longer, but they are not immune. Towing, heavy cargo, mountain driving and seized rear pad pins can wear them faster than expected.
• Parking brake shoes only wear when the parking brake is applied, so on a well-adjusted truck they can last a very long time. They wear quickly if the brake is driven with the lever partly on or the shoes are adjusted too tight and drag.

The practical rule: inspect both ends every time a wheel comes off. Do not assume the rear is fine just because the front was the one making noise.

Front vs Rear at a Glance

Symptoms and How to Tell Which End Is the Problem

Front brake symptoms

• A pulsing brake pedal or steering wheel shimmy when stopping from highway speed, which points to front rotor thickness variation.
• Squealing or grinding that you hear from the front wheels and that changes when you brake.
• Pad material visibly thin through the caliper window.

Rear brake symptoms

• A pulsation you feel in the seat or pedal but not in the steering wheel.
• A parking brake lever that pulls up much farther than it used to, or a parking brake that will not hold the truck on a grade. That is usually worn or badly adjusted shoes inside the rotor hat, not the rear pads.
• A hot rear wheel or burning smell after a drive, which can mean a sticking rear caliper or parking brake shoes adjusted too tight.

To confirm, pull a wheel at each end and measure pad material and rotor thickness against the minimum stamped on the rotor. On the rear, also look through the adjuster hole in the rotor at the shoes, and check that the rotor spins freely with the parking brake released.

What to Replace in a Front Brake Job

Replace front pads as an axle set, and resurface or replace the rotors at the same time. Most owners replace the rotors on a truck this age, since machined rotors lose thermal mass the LX470 needs. Along with the pads, inspect the retaining pins and hardware and replace them if they are worn or corroded, and fit new anti-squeal shims. If a caliper piston is seized or a boot is torn, rebuild or replace the caliper before it ruins a new set of pads.

For pad choice, a street-performance compound is a common upgrade for the LX470. Performance compounds generally need a careful bed-in after installation, so follow the pad maker's instructions. We carry the EBC Yellowstuff front brake pads for the 1998-2007 LX470, and you can browse more options in our brake pads collection and brake rotors collection.

What to Replace in a Rear Brake Job

A Land Cruiser reference parts list for the 100-series rear brakes (verified against the LX470) groups the job into three tiers:

• Service items: rear pad kit (04466-60070), anti-squeal shim kit (04946-60031), fitting kit (04948-60010) and a pair of rear rotors (42431-60281).
• Replace if needed: pad retainer pins and the caliper dust boots.
• Caliper work: a piston kit to refresh the rear calipers, or complete left and right calipers if they are pitted or leaking.

Because the parking brake shoes ride inside the rotor hat, the rear rotor job is the natural time to inspect them. If the shoe lining is thin, glazed, oil-soaked from a leaking axle seal, or the springs are weak, replace the shoes and hardware while the rotor is off. After reassembly, the shoes must be adjusted through the hole in the rotor and the parking brake set up per the factory service manual so the shoes hold without dragging.

Rear pads, hardware and related parts are in our brake hardware kits and brake shoes collections, and replacement units are in brake calipers.

How Hard Is the Job?

The front brakes are a straightforward driveway job: wheel off, caliper off, pads out, rotor off. The rear takes longer. You need to back off the parking brake shoes so the rotor will clear them, and you must re-adjust the shoes afterward, which is the step most first-timers skip. Torque the caliper bolts and lug nuts to the values in the factory service manual, bed in the new pads, and check the brake fluid condition while you are there. If the fluid is dark, a flush is cheap insurance on a truck this old.

Frequently Asked Questions

Should I replace front and rear brakes on my LX470 at the same time?

Only if both are worn. The front usually needs service first, and the rear often has life left. Measure both ends and replace each axle when it reaches its limit.

Does the LX470 have rear drum brakes?

No. The service brakes are discs at all four corners. The only drum is the small parking brake drum formed inside the hat of each rear rotor.

Do Land Cruiser 100-series brake parts fit the LX470?

The LX470 and the 1998-2007 Land Cruiser share their brake system, and many parts are listed for both. Always confirm the part number for your model year before ordering.

Why does my parking brake lever pull up so far after a rear brake job?

The parking brake shoes were not adjusted after the rotors went back on. Adjust the shoes through the access hole in the rotor, then set the lever travel as the service manual describes.

Do I need new rotors every time I replace pads?

Not always, but rotors must be above their minimum thickness and free of heavy scoring or runout. On a high-mileage LX470, new rotors with new pads usually give the smoothest, quietest result.

Sources

1. TLC FAQ - 100 Series Rear Brakes Refurb Parts List - rear pad, shim, fitting kit, rotor and caliper part numbers and LX470 compatibility
2. Genuine Lexus LX470 Parking Brake Shoe parts listing - parking brake shoe part numbers and 1998-2007 LX470 fitment
3. Cruiser Corps - Rear Brake Pads, 100 Series / LX470 - rear pad fitment shared by the 1998-2007 Land Cruiser and LX470