Subaru Impreza Brake Replacement Guide

By Core Brake Parts Tech Team — Circleville, OH warehouse

Short answer: The compact Subaru Impreza uses 5-lug hubs (5x100 on base trims), ventilated front rotors near 277 mm, and solid rear rotors. Most years use a cable parking brake built into the rear caliper; lug nuts torque to about 89 lb-ft (120 Nm). This guide walks through the exact diagnostic steps, replacement thresholds, product comparisons, and cost breakdown so you can decide with confidence whether to DIY or take it to a shop.

Direct experience note: we ship these parts daily from our Circleville, OH warehouse to customers across the country. The picks in this guide reflect what fits, what lasts, and what our repeat-buyer mechanics come back for.

What to Know About Subaru Impreza Brake Replacement

Understanding Subaru Impreza brake replacement matters because it directly affects stopping distance, brake pedal feel, and how often you replace consumables. Getting it right the first time saves both money and follow-up shop visits.

• Non-turbo Impreza runs a 5x100 bolt pattern with 5 lug nuts; WRX and STI use 5x114.3.
• Front rotors are ventilated for cooling; base-trim rear rotors are solid, non-vented discs.
• Lug nuts torque to roughly 89 lb-ft (120 Nm); always finish with a calibrated torque wrench.
• Most Impreza years use a cable parking brake built into the rear caliper; the newest 2024+ generation and some trims may use an electronic EPB, so verify yours.
• Front rotor diameter runs near 277 mm but varies by model year, engine, and trim level.
• Never machine a rotor past its minimum-thickness stamp; replace vented and solid discs in axle pairs.

Spec Chart by Vehicle Class

How to Diagnose or Replace

1. Loosen the wheel lugs, lift the car safely, set jack stands, then remove the road wheel.
2. Remove the two caliper slide-pin bolts, lift the caliper off, and hang it with wire.
3. Unbolt the two caliper-bracket bolts from the knuckle to free the bracket and old pads.
4. Slide the rotor off the hub, using the threaded jack-off holes if it is seized.
5. Clean the hub face, then mount the new vented front or solid rear rotor squarely.
6. Compress the piston, install new pads with hardware, then reinstall the bracket and caliper to torque.
7. For rear brakes, release the parking-brake cable and retract the caliper's integrated mechanism before compressing.

Once diagnosis is complete, order the exact replacement parts for your vehicle - fitment matters. Related Subaru Impreza brake replacement products are listed in the next section.

Recommended Parts and Where to Buy

Every product below is in stock at our Circleville, OH warehouse and ships same-day when ordered before 2 PM Eastern. Free shipping on orders over $75.

• Brake Pads
• Brake Rotors
• Bosch
• Brake Parts

If your exact vehicle is not listed, use the site search or filter the full brake parts collection by year and make.

Cost Breakdown - DIY vs Shop

DIY savings scale with vehicle size and job complexity. A full-size truck brake job saves $450-700 in labor. For most passenger cars, plan on 90-120 minutes per axle for pads only, 2-3 hours for pads plus rotors.

Install Tips - Where Most DIYers Go Wrong

• Never reuse crushed pad hardware; fresh anti-rattle clips plus a light smear of caliper grease stop brake squeal.
• Torque lug nuts in a star pattern to about 89 lb-ft, then re-check them after 50 miles.
• On rear service, fully release the parking-brake cable before retracting the piston so you do not damage the mechanism.

Frequently Asked Questions

What's the short answer on Subaru Impreza brake replacement?

The compact Subaru Impreza uses 5-lug hubs (5x100 on base trims), ventilated front rotors near 277 mm, and solid rear rotors. Most years use a cable parking brake built into the rear caliper; lug nuts torque to about 89 lb-ft (120 Nm).

How much does Subaru Impreza brake replacement cost?

It depends on your vehicle and how much you replace. For example, front pads only runs about $30-$80 parts in parts for a DIY job, or $150-$300 installed at a shop with labor included. The full cost breakdown is in the table above.

What should I check first?

Key things to check: Non-turbo Impreza runs a 5x100 bolt pattern with 5 lug nuts; WRX and STI use 5x114.3; Front rotors are ventilated for cooling; base-trim rear rotors are solid, non-vented discs.

Can I do this job myself?

Many DIYers can with basic tools. The first steps are: Loosen the wheel lugs, lift the car safely, set jack stands, then remove the road wheel; Remove the two caliper slide-pin bolts, lift the caliper off, and hang it with wire; Unbolt the two caliper-bracket bolts from the knuckle to free the bracket and old pads. The complete step-by-step is above.

Key Takeaways

• The compact Subaru Impreza uses 5-lug hubs (5x100 on base trims), ventilated front rotors near 277 mm, and solid rear rotors. Most years use a cable parking brake built into the rear caliper; lug nuts torque to about 89 lb-ft (120 Nm).
• Measure friction material and rotor thickness at every tire rotation - catches wear before it becomes damage.
• Replace pads at 3 mm; below 2 mm is unsafe.
• Loaded calipers (with brackets, pads, and hoses) save 1-1.5 hours of labor per side over bare calipers.
• Bed new pads properly with 8-10 medium stops from 40 to 10 mph.
• Free shipping on orders over $75; same-day shipping on in-stock orders before 2 PM Eastern.

References

1. en.wikipedia.org
2. subaru.com
3. tirerack.com
4. tirerack.com