🔧 K900 - Front Brake Pads & Rotor Replacement

You’ll remove the front wheels, swap the brake pads and rotors, then reassemble everything correctly so your A4—sorry, your K900—stops smoothly and safely. This job is very doable at home, but cleanliness and correct tightening (torque) matter a lot for brake safety.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• ⚠️ Work on level ground and use jack stands—never rely on a jack alone.
• ⚠️ Do not breathe brake dust; use brake cleaner and avoid compressed air.
• ⚠️ Do not let the caliper hang by the brake hose; it can damage the hose.
• ⚠️ Keep grease and oil off pad/rotor friction surfaces.
• 🔋 Battery disconnect is not required for this front brake job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Lug nut socket (21mm)
• Breaker bar (1/2")
• Torque wrench (1/2" drive)
• Metric socket set (10mm-22mm)
• Metric wrench set (10mm-22mm)
• Ratchet (3/8" drive)
• Flathead screwdriver (medium)
• C-clamp or brake caliper piston tool (specialty)
• Impact driver
• #3 Phillips bit
• Bungee cord or caliper hanger hook
• Wire brush
• Brake cleaner spray
• Shop towels
• Gloves (nitrile)
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front brake pad set - Qty: 1
• Front brake rotors - Qty: 2
• Front brake hardware kit - Qty: 1
• Brake lubricant (silicone/ceramic) - Qty: 1
• Brake cleaner - Qty: 1
• DOT 3 or DOT 4 brake fluid - Qty: 1 bottle

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📋 Before You Begin

• 🅿️ Park on level ground, shift to P, and set the parking brake.
• 🧱 Place wheel chocks behind both rear wheels.
• 🛞 Crack the front lug nuts loose 1/2 turn with a 21mm lug socket and breaker bar before lifting.
• 🧴 Open the hood and check brake fluid level; if it’s near “MAX,” be ready to remove a little fluid (pads are thicker and will push fluid up).
• Assumption: Torque specs can vary by brake package; tighten all fasteners to Kia OEM specifications from service data for your K900.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the front end

• Use a floor jack (rated 3-ton minimum) to lift the front of your K900 at the proper front jack point.
• Place jack stands (rated 3-ton minimum) under the front support points and lower onto the stands.
• Give the car a gentle shake to confirm it’s stable.

Step 2: Remove the front wheels

• Remove lug nuts using a 21mm lug nut socket and ratchet (3/8" drive) or breaker bar (1/2").
• Set wheels aside where they can’t roll away.

Step 3: Remove the brake caliper (do not stretch the hose)

• Turn the steering to give yourself more room at the side you’re working on.
• Remove the caliper guide/slide bolts using an appropriate socket from the metric socket set (10mm-22mm) and a ratchet (3/8" drive).
• Lift the caliper off the bracket.
• Hang the caliper with a bungee cord or caliper hanger hook (this is just a strap/hook that supports the caliper so the rubber hose isn’t carrying the weight).

Step 4: Remove the old pads and hardware

• Pull the pads out of the bracket by hand; if stuck, gently persuade them with a flathead screwdriver (medium).
• Remove the pad hardware clips (if included) and clean the bracket contact points with a wire brush.
• Spray dust and grime away using brake cleaner spray and wipe with shop towels.

Step 5: Remove the caliper bracket

• Remove the caliper bracket bolts using an appropriate socket from the metric socket set (10mm-22mm) and a breaker bar (1/2").
• Set the bracket aside.
• On reassembly: Torque to Kia OEM specification using a torque wrench (1/2" drive).

Step 6: Remove the rotor

• If your rotor has retaining screws, remove them using an impact driver with a #3 Phillips bit. Push hard to avoid stripping.
• Pull the rotor straight off. If it’s stuck from rust, tap the rotor “hat” area with controlled force (use the breaker bar (1/2") handle as a gentle persuader, not on the shiny braking surface).
• Clean the hub face with a wire brush and wipe clean with brake cleaner spray and shop towels. A clean hub helps prevent brake shake.

Step 7: Install the new rotor

• Clean the new rotor faces with brake cleaner spray and shop towels to remove packing oil.
• Slide the rotor onto the hub.
• If equipped, reinstall rotor retaining screws using the impact driver and #3 Phillips bit (snug only—do not over-tighten).

Step 8: Reinstall the caliper bracket and new hardware

• Reinstall the caliper bracket bolts using an appropriate socket from the metric socket set (10mm-22mm) and ratchet (3/8" drive).
• Final-tighten using a torque wrench (1/2" drive): Torque to Kia OEM specification.
• Install new hardware clips from the front brake hardware kit.
• Apply a thin film of brake lubricant (silicone/ceramic) where pads slide on the clips (not on the rotor face).

Step 9: Compress the caliper piston

• Before compressing, check the brake fluid reservoir level again under the hood.
• Use a C-clamp or brake caliper piston tool (specialty) to slowly push the piston back into the caliper. (This tool presses the piston in evenly so the new, thicker pads will fit.)
• Go slow and keep the piston straight. If it binds hard, stop and re-check alignment.

Step 10: Install new pads and reinstall the caliper

• Install the new pads into the bracket.
• Apply a small amount of brake lubricant (silicone/ceramic) to pad backing/ears where the manufacturer allows (avoid pad friction material).
• Slide the caliper over the new pads.
• Install the caliper slide bolts using an appropriate socket from the metric socket set (10mm-22mm) and ratchet (3/8" drive).
• Final-tighten using a torque wrench (1/2" drive): Torque to Kia OEM specification.

Step 11: Reinstall wheels

• Reinstall the wheel and hand-thread lug nuts.
• Lower the car off the stands using the floor jack (rated 3-ton minimum).
• Tighten lug nuts in a star pattern with a torque wrench (1/2" drive): Torque to Kia OEM specification.

Step 12: Repeat on the other front side

• Repeat Steps 3 through 11 on the other front wheel.
• Always replace pads and rotors in pairs.

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✅ After Repair

• 🦶 With the engine off, pump the brake pedal slowly until it feels firm (this seats the pistons against the new pads).
• 🧴 Re-check brake fluid level and top off only if needed using DOT 3 or DOT 4 brake fluid.
• 🕵️ Check for leaks, odd noises, or a soft pedal before driving.
• 🚗 Bed-in procedure: do 6-10 moderate stops from ~50 km/h (30 mph) to ~15 km/h (10 mph), with light driving between stops to cool. Avoid hard stops for the first 200 km (125 miles) unless needed for safety.

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💰 DIY vs Shop Cost

Shop Cost: ₹18,000-₹40,000 (parts + labor)

DIY Cost: ₹10,000-₹28,000 (parts only)

You Save: ₹8,000-₹12,000 by doing it yourself!

Shop labor rates vary but typically run ₹1,000-₹2,500/hour. This repair takes a shop approximately 2-3 hours.

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🎯 Ready to get started?

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