2017-2023 Nissan Armada Front vs Rear Brakes: What Wears First and What to Replace

By Core Brake Parts Tech Team — Circleville, OH warehouse

On a 2017-2023 Nissan Armada the front brakes wear out first, usually well before the rears, because the front axle does most of the stopping on a heavy, body-on-frame SUV. The rear brakes last longer, but they are not an afterthought: they use a thinner rotor that has less material to lose, and they hide a separate parking brake drum inside the rotor hat. Here is how the system is laid out, what to check at each end, and what to replace together.

How the Armada brake system is laid out

The second-generation Armada arrived for 2017 on the global Patrol platform, with a 390-horsepower 5.6-liter V8, a 7-speed automatic and body-on-frame construction rated to tow up to 8,500 pounds when properly equipped. Nissan's own 2017 specification sheet lists four-wheel vented disc brakes with the following hardware:

The system also carries four-wheel, four-channel, four-sensor ABS, Electronic Brake force Distribution (EBD) and hydraulic Brake Assist. Maximum trailer weight is 8,500 pounds with an 850-pound tongue load, and GVWR is 7,300 to 7,500 pounds depending on trim and drive. A 2017 Armada weighs roughly 5,576 pounds at the curb before anyone gets in, so every stop asks a lot of the brakes, and a loaded family trip or a trailer asks a lot more.

The key detail for this article: the front and rear rotors are the same diameter, but the rear rotor is noticeably thinner. That matters when you decide whether a rear rotor can be reused.

Why the front brakes wear first

When any vehicle brakes, its weight shifts forward. The nose dips, the front tires are pressed harder into the road, and the rear tires get lighter. A brake can only use as much force as its tire can put to the pavement, so the front axle is designed to do most of the work, and it gets the thicker rotor to soak up that heat. EBD adjusts front-to-rear pressure on the fly so the rears do not lock up when the back of the truck goes light.

The practical result on an Armada:

• Front pads are normally the first brake job, and on most trucks the fronts are replaced more often than the rears, especially if you tow.
• Front rotors take the most heat, so they are the ones that develop a pulsation (often called warped rotors) after long downhill grades or towing.
• Rear pads wear more slowly, but the thinner rear rotor reaches its minimum thickness with less wear, so do not assume rear rotors can always be machined and reused.

Towing changes the balance. The Armada has automatic self-leveling rear suspension, which keeps the truck sitting level with tongue weight on the hitch, but the trailer's mass still has to be stopped. Unless the trailer has its own working brakes and a properly set controller, the Armada's own brakes absorb that extra energy, and both ends wear faster.

Symptoms and how to tell which end needs work

• Squeal only when braking, from the front: often a pad wear indicator touching the rotor. Pull a front wheel and check the remaining pad material.
• Pulsing pedal or steering wheel shake when stopping from highway speed: usually front rotor thickness variation. A shake felt in the seat rather than the steering wheel points more toward the rears.
• Grinding: pad backing plate on rotor. Stop driving it and replace pads and rotors on that axle.
• Parking brake does not hold on a slope, or the pedal travels a long way: worn or out-of-adjustment parking brake shoes inside the rear rotor hat, not the rear pads.
• Rear brakes hot or dragging after using the parking brake: a sticking parking brake cable or shoes that did not fully release.
• One side much hotter, or the truck pulls to one side: a sticking caliper slide pin or piston. That is a caliper problem, and new pads alone will not fix it.

The honest check is to look. Pull a wheel at each end, measure pad material, and measure rotor thickness with a micrometer against the minimum stamped on the rotor or listed in the factory service manual.

The rear parking brake: a drum inside the rotor

The Armada does not use the rear caliper as a parking brake. Instead, a small drum is built into the inside of each rear rotor hat, and a separate parking brake shoe set expands against it when you press the foot pedal. Nissan lists the same parking brake shoe set for the 2017 through 2024 Armada.

Because those shoes only work when the parking brake is applied, they wear very slowly. Still, check them whenever the rear rotors come off, because the rotor has to be removed to see them anyway:

• Look at the shoe lining thickness and for oil or grease contamination (a leaking axle seal can soak them).
• Look at the drum surface inside the rotor for scoring, grooves or heat cracks.
• If you install new rear rotors, the drum surface is new too, so the shoes usually need to be adjusted so the parking brake holds properly. Follow the adjustment and burnish procedure in the factory service manual.

If the truck was driven any distance with the parking brake applied, inspect the shoes and the drum surface even if the rear pads look fine.

What to replace together

Always work in axle pairs: both fronts or both rears, never one side. Beyond that:

• Pads and rotors together. On a truck this heavy, fresh pads on a worn or heat-spotted rotor give poor contact, noise and short pad life. New brake rotors with new pads give a flat, clean surface to bed in on.
• Hardware. Replace the abutment clips and anti-rattle springs, and clean and lubricate the caliper slide pins. A brake hardware kit is inexpensive insurance against noise and uneven wear.
• Calipers if a piston is sticking. Uneven pad wear side to side or a dragging wheel means a caliper, not just pads. See our brake calipers.
• Brake fluid. Heat from towing ages fluid. If the fluid is dark or it has been several years, flush it with the fluid type printed on the master cylinder cap while the brakes are apart.

For the front axle, our 2017-2023 Nissan Armada / Infiniti QX80 front ceramic brake pads from Power Stop are a direct fit. If you tow often, a carbon-fiber ceramic truck-and-tow compound handles heat better than a standard daily-driver ceramic, and pairing it with new rotors helps it shed heat. You can compare options in our Power Stop and ceramic brake pads collections.

How hard is the job?

Front pads and rotors on an Armada are a solid driveway job for someone with a floor jack rated for the weight, jack stands, a torque wrench and a caliper piston tool. The parts are large and heavy: a 13.8-inch rotor is a two-handed lift. Torque the caliper bracket bolts and lug nuts to the values in the factory service manual rather than guessing.

The rear is a step up because of the parking brake. Back off the parking brake shoe adjuster if the rotor will not slide over the shoes, and plan to readjust the shoes after installing new rotors. Before you drive, pump the pedal until it is firm, then bed in the new pads with a series of moderate stops so the pad material transfers evenly to the rotor.

Frequently Asked Questions

Do I need to replace front and rear brakes on my Armada at the same time?

No. The fronts usually wear out first, so it is normal to do front pads and rotors on their own. Measure the rear pads and rotors while the truck is in the air so you know how much life they have left.

Why is my rear rotor thinner than the front if they are the same size?

Nissan specifies 13.8-inch rotors at both ends, but the front is 1.2 inches thick and the rear is 0.8 inches, because the front does more of the braking and needs more mass to absorb heat. The thinner rear has less material to machine off, so it often has to be replaced rather than resurfaced.

Where are the parking brake shoes on a 2017-2023 Armada?

Inside the rear rotor. The center hat of each rear rotor doubles as a small drum, and a separate shoe set expands against it when you press the parking brake pedal. You have to remove the rear rotor to inspect them.

Do I need special pads if I tow with my Armada?

You do not have to, but a truck-and-tow or carbon-fiber ceramic pad resists heat fade better than a daily-driver compound. Pair it with new rotors, and make sure the trailer's own brakes and controller are doing their share.

Will Infiniti QX80 brake parts fit my Armada?

Many do, because the 2017-and-later Armada shares its platform with the QX80, which is why a lot of brake kits list both. Always confirm fitment by year and model on the part listing before ordering.

Sources

1. Nissan USA Newsroom - 2017 Nissan Armada Press Kit - front and rear vented disc rotor sizes, ABS, EBD and Brake Assist, foot-pedal parking brake, 8,500 lb towing and 850 lb tongue, GVWR, self-leveling rear suspension, 390 hp V8 and 7-speed automatic
2. Nissan Parts Deal - Genuine Nissan Armada Parking Brake Shoe - parking brake shoe set fits the 2017-2024 Armada and works in a drum built into the rear rotor
3. CarsDirect - 2017 Nissan Armada Specs - 5,576 lb curb weight, four-wheel disc brakes, 8,500 lb max trailer weight
4. Auto123 - 2017 Nissan Armada SL Technical Specs - four-wheel disc brakes with ABS, EBD and brake assist; 5.6L V8 and 7-speed automatic
5. PowerStop - Best Brake Pads for Towing - towing adds heat and braking demand; carbon-fiber ceramic pads for towing
6. PowerStop - How to Choose the Best Brakes for an SUV - replace rotors and pads together for a proper contact surface