2014–2021 BMW i3
By Ray Delgado ✓ Certified Mechanic · Published Sep 24, 2026 · Updated Oct 14, 2026
Save $108 by doing it yourself! Shop cost: $365
Quick answer: Front Brake Pad Replacement on a 2014–2021 BMW i3 is rated Moderate and takes about 60–120 minutes. You'll need 8 tools for this job, and parts cost about $257. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Front brake pad set (BMW i3) | — | $61.00 | |
| Front brake rotors (pair, if scored or below spec) | — | $164.00 | |
| Brake wear sensor | — | $17.00 | |
| Caliper slide-pin grease (silicone-based) | — | $7.00 | |
| Brake cleaner | — | $8.00 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Park the i3 on level ground, engage the parking brake, and loosen the front wheel lug bolts slightly before lifting. Raise the front onto jack stands at the factory lift points and remove the wheel.
Locate the brake wear sensor wire clipped to the inner pad and unplug it carefully from its connector. Cut or release any zip ties holding the wire to the suspension.
Remove the two caliper guide bolts and lift the caliper off the rotor, supporting it with a hook or bungee from the strut — never let it dangle by the brake hose. Slide the old pads out of the caliper bracket.
I've seen this exact mistake come through the shop: Remove the two caliper guide bolts and lift the caliper off the rotor, supporting it with a hook or bungee from the strut — never let it dangle by the brake hose.
Pull the caliper slide pins out of the bracket, wipe off the old dried grease and any corrosion, and inspect the rubber boots for tears.
Small thing, big difference: I pull the slide pins, wipe off the old dried grease, and inspect the boots — I've found torn boots that explained uneven pad wear.
Check the rotor for scoring, lip, or rust damage; if it is below minimum thickness or deeply scored, remove the rotor retaining screw and replace the rotor. Clean the hub face with a wire brush so the new rotor sits perfectly flat.
Do yourself a favor like I do: I check the rotor for scoring and measure thickness — I've run a below-minimum rotor before, and it's not worth the risk.
Push the caliper piston straight back into its bore with a piston tool or C-clamp to make room for the new, thicker pads.
Apply fresh silicone-based grease to the cleaned slide pins, reinstall them with intact boots, and fit the new pads into the bracket with their anti-rattle hardware. Route and connect the NEW wear sensor — reusing the old one keeps the dash warning lit.
Remount the caliper over the pads, torque the guide bolts evenly, and reinstall the wheel. Lower the car, then pump the brake pedal several times until it feels firm before driving anywhere.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
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