Overview
Replacing front brake pads on an Audi is a straightforward job with the right tools. Most Audi models use a sliding caliper design with two guide pin bolts, making the process very similar across the A3, A4, A5, Q3 and Q5 ranges. Budget around an hour for the full job including both sides.
Tools & Parts You'll Need
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Step-by-Step Guide
Loosen wheel bolts and jack up the car
With the car on the ground, crack the wheel bolts loose (don't remove). Jack the car up at the correct jacking point and place an axle stand under the subframe or sill. Remove the wheel fully.
Inspect the old pads
Before removing anything, check the remaining pad thickness through the caliper. If the friction material is below 3mm, it's time to replace. Also check the disc for deep scoring or cracks.
Remove the caliper guide pin bolts
The caliper is held on by two guide pin bolts — typically 7mm internal hex (Allen key). Remove both bolts and slide the caliper body off the disc. Do NOT let it hang by the brake hose — use a wire hook to hang it from the spring or suspension.
Remove the old brake pads
The inner pad is usually clipped to the caliper piston; the outer pad clips into the caliper bracket. Pull both pads out and set aside. Note which way they sit for reference.
Clean the caliper bracket
Use a wire brush and brake cleaner to clean the pad contact points on the bracket (the sliding surfaces where the pads sit). Remove any rust, corrosion or old grease buildup.
Compress the caliper piston
Before fitting new (thicker) pads, the caliper piston must be pushed back into its bore. Remove the brake fluid reservoir cap first to relieve pressure. Use a piston tool or G-clamp to slowly press the piston back flush. Mop up any fluid that overflows from the reservoir.
Apply brake grease to contact points
Apply a thin smear of copper grease or brake assembly paste to the metal contact points on the caliper bracket where the pads slide — NOT on the friction material or disc face. This prevents squeal and binding.
Fit the new brake pads
Clip the inner pad onto the caliper piston face. Clip the outer pad into the caliper bracket. Ensure both pads are seated firmly in their retaining clips and move freely.
Refit the caliper and torque up
Slide the caliper back over the pads and disc. Thread in the guide pin bolts by hand first, then torque to specification — typically 25–35 Nm for most Audi models. Check your specific model's torque value.
Refit the wheel and bed in the pads
Torque the wheel bolts to 120 Nm (standard Audi alloy wheel spec). Before driving, pump the brake pedal 10–15 times until it feels firm — the piston needs to extend back out against the new pads. Bed in the brakes with several gentle stops from 30 mph before any hard braking.
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Quick, Easy & Safe to DIY
Audi front brake pads are one of the more accessible jobs for a home mechanic. With a decent socket set, an Allen key set, and a piston tool, you can save a significant amount over a main dealer service. Always replace both sides at the same time, and never skip the bedding-in process with new pads.