2020-2022 Kia Telluride Front vs Rear Brakes: What Wears First and What to Replace

By Core Brake Parts Tech Team — Circleville, OH warehouse

On a 2020-2022 Kia Telluride, the front brakes wear out first in almost every case. The front axle carries the engine and the heaviest share of the vehicle, and every stop shifts more load onto it, so the front pads and rotors absorb most of the braking work and reach their wear limit long before the rears do. The rear brakes usually give trouble for a different reason: not friction wear, but corrosion, seized hardware, and the electronic parking brake that lives inside them.

Why the front brakes do most of the work

Braking is a weight-transfer problem before it is a friction problem. As Wagner describes the system, the braking process shifts the vehicle's weight forward, so the brakes on the front of the vehicle do most of the work. That is why manufacturers make front brakes physically bigger than rear brakes, and why a front pad set has a shorter service life than a rear set on the same vehicle. The Telluride is a three-row SUV that spends its life carrying people and cargo, so the load thrown onto the front end during a stop is substantial before you add a trailer to it.

How lopsided is the split? EBC Brakes puts it plainly: with all things normal, most car rear brakes last about twice as long as the fronts. EBC also notes the exception that matters here, which is that on light trucks the wear front to back can be about equal because of the loads involved. A loaded Telluride sits closer to the truck end of that range than to a compact sedan, so do not be surprised if your rears are further along than a two-to-one rule suggests.

What wears first, and what that means for your service plan

Plan on going through front pads and rotors roughly twice for every rear set, with the gap narrowing if you tow, run mountain grades, or carry a full load of passengers most days. In practice that means front ceramic brake pads for the Telluride come off on a shorter cycle, while the rear service is less frequent but more involved.

The rear brakes carry a second job the fronts do not. The Telluride uses an Electronic Parking Brake, and Kia's owner's manual for the vehicle warns directly against driving with the EPB applied, because it may cause excessive wear of the brake pad and brake rotor. A dragging or partially applied rear brake is one of the few ways a Telluride's rears can wear out ahead of its fronts.

Symptoms, and which end they point to

One sound that is not a fault: a click or an electric brake motor whine as the EPB applies or releases. Kia's manual states those conditions are normal and indicate that the EPB is functioning properly.

Causes: what actually goes wrong on each axle

Front: heat and mileage. The fronts simply do more work, and the two parts that give up are the pads and the rotor faces. Power Stop's guidance is to measure rotor thickness with a micrometer at the thinnest point on the rotor's surface where it meets the brake pads, then compare that to the minimum thickness figure, which is engraved on the sides of the rotor, within the vanes, or on the hat. A rotor below that figure is lighter and less able to absorb and dissipate heat, and its strength is reduced, which raises the risk of cracking. Replace the pair rather than one side, so a thickness difference between left and right does not make the vehicle pull.

Rear: corrosion and neglect. Rear pads see less heat, so they stay damp and dirty longer and the hardware around them corrodes. EBC notes that badly scored rotors rapidly escalate pad wear, and recommends that calipers be serviced and resealed every three to five years, especially single-piston sliding types. On a rear disc setup the parking brake also works through the caliper. Wagner describes that mechanism as a corkscrew that pushes a piston into the brake pads, and points out that a parking brake left unused can corrode, and you will not know there is a problem until you really need it. Setting the EPB regularly is free maintenance.

The fix, and what to replace at the same time

Service one axle at a time, both sides together. A proper job on either end of a Telluride is more than pads.

• Pads and rotors as a set. If the rotor is at or under minimum thickness, or scored enough to chew up new pads, replace it. Start with a matched rear brake kit for the 2020-2022 Telluride, or pick brake rotors and ceramic brake pads separately.
• Hardware. Wagner's disc brake service checklist calls for replacing the attaching hardware and cleaning rust off the caliper brackets and guides with a wire brush or sand and bead blasting. New clips and shims cost little next to doing the job twice; see brake hardware kits.
• Lubrication. That same checklist specifies molybdenum disulfide high-temperature lube on metal-to-metal points such as brackets to guides and guides to pads, high-temperature silicone lube on metal-to-rubber points such as guide pins to boots, and lube on the pad-to-piston contact area of any pad with an attached shim.
• Clean the new rotors. Wagner says to wash rotors with soap and hot water and a scrub brush to remove oils and fine particles before they go on the vehicle.
• Keep the compounds matched. EBC advises using a similar grade of pad front and rear so the balance between the axles stays where the vehicle expects it. If you fit rear ceramic pads, keep the fronts in the same family.
• Check the fluid. Kia specifies hydraulic brake fluid that conforms to DOT 4 specifications, kept between the MAX and MIN marks on the reservoir, and warns that a system needing frequent additions of fluid should be inspected by an authorized Kia dealer.

How hard is the job on a Telluride

The front is a conventional sliding-caliper brake job: unbolt the caliper, support it so the hose carries no weight, swap the pads and rotor, clean and lubricate the slides, and torque every fastener to the value in the factory service manual.

The rear is what catches people out. Because the parking brake is electronic rather than a cable and lever, the rear brake does not come apart the way an older vehicle's does, and the rear piston will not simply push or wind back with hand tools. The system has to be placed in the service state called for by the factory procedure before anything is retracted, then restored afterward, or you risk damaging the actuator. If you are not set up for that step, the rear job belongs at a shop even if you do the fronts yourself.

Bed the new friction in before you trust it. Wagner's burnishing procedure is roughly twenty complete stops from 30 mph with cool-down between cycles, which lays an even layer of material onto the rotor and heads off the vibration owners later blame on a warped rotor. Then check the fluid level again and confirm the EPB applies and releases normally. Kia's manual is specific that before driving you should be sure the parking brake is fully released and the brake warning light is off.

Frequently Asked Questions

Do the front and rear brakes on a Kia Telluride wear at the same rate?

No. The fronts wear faster because braking transfers weight forward and the front brakes do most of the work. EBC's rule of thumb is that rear brakes last about twice as long as fronts on most cars, though on heavier vehicles carrying real loads the two ends come closer together. Inspect both and replace whichever axle has earned it.

Can I replace only the front brakes and leave the rears alone?

Yes, provided the rear pads still have material, the rear rotors measure above minimum thickness, and the rear calipers and slides move freely. Brakes are replaced by axle, not by whole vehicle. What you should never do is replace one side of an axle and leave the other.

Do I need special equipment for the rear brakes on my Telluride?

Plan on it. The Telluride uses an Electronic Parking Brake, and the rear brake has to be put into the service state described by the factory procedure before the piston is retracted. Skipping that step can damage the parking brake actuator, which turns a pad-and-rotor job into a caliper job.

What brake fluid does a 2020-2022 Telluride use?

Kia's owner information specifies hydraulic brake fluid that conforms to DOT 4 specifications, and warns against mixing fluid types or using old fluid left open. It also cautions that a few drops of mineral-based oil such as engine oil can damage brake system parts, so keep the reservoir and your tools clean.

Are Telluride and Hyundai Palisade brake parts the same?

The two share a platform, and the front and rear pad sets cataloged for the 2020-2022 Telluride are cataloged for the 2020-2023 Palisade as well. Confirm fitment against your exact year and trim rather than assuming, since brake hardware can change within a model run.

How often should I check rotor thickness?

Power Stop recommends checking rotor thickness every 10,000 miles or whenever you replace the brake pads, and sooner if you feel vibration, hear squealing, or notice the vehicle pulling. The reading takes a minute once the wheel is off, and tells you whether you are buying pads or pads and rotors.

Sources

1. Kia Owner's Manual, Telluride Electronic Parking Brake - EPB operation, normal motor sounds, and the warning about driving with the EPB applied.
2. Kia Owner's Manual, Checking the Brake Fluid Level - the DOT 4 specification, the MAX and MIN reservoir marks, and when to have the system inspected.
3. Wagner Brake, How the Brake System Works - weight transfer under braking and why the front brakes do most of the work.
4. Wagner Brake, Brake Service Inspection Checklist - rotor inspection, hardware replacement, lubrication points, and the burnishing procedure.
5. Wagner Brake, How to Use a Parking Brake - the corkscrew mechanism in a rear disc parking brake and why regular use prevents corrosion.
6. Power Stop, Find Minimum Rotor Thickness - where minimum thickness is marked and how to measure it.
7. EBC Brakes, Rapid Pad Wear - Faults and Cures - rear pads lasting about twice as long as fronts, scored rotors, and caliper service intervals.