Replacing rear brake discs on a ŠKODA Octavia: step-by-step guide with photos and tips

Rear brake discs on ŠKODA Octavia — a consumable that requires attention every 80–120 thousand km. But the actual service life depends on the driving style, the quality of the pads and even the climate: in cities with frequent traffic jams or mountainous areas, wear accelerates by 1.5–2 times. If you notice the steering wheel wobbling when braking, squeaking or an increased braking distance, it’s time to check the condition of the discs. In this article we will look at how to independently replace rear brake discs with Octavia A5, A7 and restyled versions (FL), including the nuances of working with the electronic handbrake and the system ABS.

The procedure does not require special equipment, but there are critical points: for example, incorrect installation of the disk can lead to jamming of the brake mechanism or an error triggered ABS. We will describe each stage in detail - from preparing tools to bleeding the brakes, and also give recommendations on the choice of spare parts (original vs analogues) and indicate typical mistakes that even experienced car owners make.

When replacement is needed: signs of wear on rear discs

Rear brake discs on Octavia They wear out more slowly than the front ones, but their condition cannot be ignored. The main symptoms that it’s time to change disks:

• 🔊 Creaking or squealing when braking - often caused by a shoulder on the edge of the disc that catches the pad.
• 🌀 Steering wheel beating or vibration of the brake pedal is a signal of critical wear or deformation of the disc (especially after overheating).
• 📏 Disc thickness less than permissible: for Octavia minimum threshold - 17.8 mm (original wheels are thick 22 mm).
• 🔴 Deep grooves or cracks - even if the thickness is normal, such defects reduce braking efficiency.

On Octavia A7 and FL with electronic handbrake (EPB) adds a risk: worn discs can block the mechanism, which will lead to impossibility of removing the car from the handbrake without a diagnostic scanner. Check the discs every time you replace the pads - this is rule No. 1 for owners ŠKODA!

⚠️ Attention: If there are blue spots - this is a consequence of overheating (for example, after a long descent from a mountain with constant braking). Such discs are subject to mandatory replacement, even if the thickness is normal: the metal loses strength and may crack.

Which wheels to choose: original vs analogues

Original rear brake discs for Octavia are produced under the brand TRW (article 1K0 615 601 for versions without EPB and 5Q0 615 601 for models with electronic handbrake). Their advantages are ideal geometry and compatibility with the system ABS, but the price is steep: from 8,000 to 12,000 rubles. for a couple. Alternatives:

Brand	Article	Price per piece, rub.	Features
ATE	24.0120-0117.2	3 500–4 200	High quality metal, suitable for aggressive driving.
Brembo	09.9662.11	4 800–5 500	Perforated discs for improved cooling.
Textar	91150100	3 200–3 800	A budget option with good wear resistance.
Bosch	0 986 479 720	4 000–4 700	Optimal price/quality ratio, often installed on the conveyor.

When choosing analogues, pay attention to ventilated or not rims: on Octavia A5 (until 2013) are often unventilated, and on A7 and FL - ventilated. Check this by VIN code or visually: ventilated ones have cooling fins between the working surfaces.

If you are changing disks for the first time, take set with pads - it's cheaper than buying separately. For example, ATE offers disc + pad sets with a 20% discount. Don't skimp on fastening bolts: they are disposable (item N 908 132 02), and their repeated use is fraught with thread failure.

Tools and preparation for replacement

To work you will need:

• 🔧 Socket wrenches by 13, 15 and 17 mm (to remove the caliper and hub).
• 🔨 Hammer and wooden spacer - to knock down the disc if it gets stuck.
• 🔩 Torque wrench (tightening torque of the hub bolts - 120 Nm).
• 🔧 7 mm hexagon - to unscrew the caliper guides.
• 🛠️ Caliper Lubricant (for example, TRW PFG110).
• 🔧 Scanner for EPB (if you have an electronic handbrake) - for example, VCDS or OBDeleven.

Before starting work:

1. Park the car flat surface and secure the front wheels with chocks.
2. Loosen the rear wheel bolts, but do not remove it completely.
3. Jack up the car and remove the wheel.
4. If you have EPB, turn off the handbrake via menu Settings → Service → Electronic parking brake or a scanner.

⚠️ Attention: Never press the brake pedal after removing the caliper! The piston may fly out of the cylinder and you will have to bleed the system.

Step-by-step instructions for replacing rear discs

The process is different for models with mechanical and electronic handbrake. Let's consider both options.

1. Removing the caliper and pads

Unscrew the two bolts securing the caliper (usually 13 or 15 mm) and carefully hang it on a wire to the spring - do not allow sagging on the hose! Remove the pads and guide plates. If the pads are stuck, use a screwdriver as a lever, but without fanaticism.

2. Removing the old disk

The disc is attached to the hub with one or two screws (under Torx T30 or hexagon). They often turn sour - treat them WD-40 10–15 minutes before unscrewing. If the disc does not come off the hub, lightly tap the back of the disc with a hammer through the wooden spacer.

What to do if the disc is “stuck” to the hub?

If the disc does not come off even after treating with WD-40, use the “hot/cold” method: heat the hub with a hair dryer (no higher than 100°C!) and immediately spray it with cold water. The metal will compress and the disk will move out of place. Do not overheat - this will damage the bearing!

3. Installing a new disk

Clean the hub from rust with a wire brush. The new disk should sit down tight, no play. Tighten the mounting screws (torque - 8–10 Nm) and install the caliper with new pads. On models with EPB before installing the caliper retract the piston special tool (for example, LISLE 25800) or scanner.

4. Reassembly and bleeding

After assembly, press the brake pedal several times until the pistons are in their working position. If you removed the brake hose, bleed the system (you will need an assistant or a vacuum pump). For Octavia with ABS pumping is performed in strict sequence: right rear → left rear → right front → left front.

Nuances for ŠKODA Octavia with electronic handbrake (EPB)

On models Octavia A7 and FL with EPB there are two key points:

1. Disabling the handbrake before work. If you don't do this, the piston won't retract and you won't be able to slide the caliper onto the new disc. Use the scanner or the on-board computer menu.
2. EPB adaptation after replacing disks. The system should “recognize” the new pads and disc. To do this:

1. Connect scanner (VCDS, OBDeleven).
2. Select block “53 - Parking Brake”.
3. Run the "Basic Settings" procedure.
4. Follow the on-screen instructions (usually requiring you to press the brake pedal).

If you skip adaptation, the handbrake may don't hold or trigger spontaneously while driving. Also after replacing the disks with Octavia with EPB sometimes required service interval reset brake pads (done in the same place, in block “53”).

Common mistakes and how to avoid them

Even experienced car owners make mistakes when replacing rear discs. Here are the most common:

• 🔧 Reusing old mounting bolts - they stretch and can burst. Always take new ones (item number N 908 132 02).
• 🧴 Lack of lubrication on the caliper guides - leads to jamming and uneven wear of the pads.
• 🔩 Incorrect tightening torque hub bolts. A weak tightening can cause the disc to run out, while a strong tightening can damage the bearing.
• 🚗 Forgetting to bleed the brakes after removing the hoses. This results in a soft pedal and longer braking distance.
• 🔧 Installing drives backwards — ventilated discs have an inner and outer side (marking IN and OUT).

Another common problem is hub corrosion. If you do not clean it before installing a new disc, it will sit crookedly and runout will appear when braking. Use a metal brush and scrub the surface copper grease (in a thin layer!).

⚠️ Attention: After replacing the disks with Octavia with ABS The fault light may come on. This is normal - the error will clear after 2-3 trips. If the lamp does not go out, check the sensors ABS for damage (they are located next to the caliper).

Cost of work in the service vs independent replacement

Prices for replacing rear brake discs ŠKODA Octavia services vary depending on the region and type of service station:

Service type	Cost of work (per axle), rub.	Opening hours
Official dealer	6 000–9 000	2–3 hours
Unofficial service	3 500–5 000	1.5–2 hours
Garage craftsmen	2 000–3 500	1–2 hours
On your own	0 (spare parts only)	3–5 hours (no experience)

Do-it-yourself replacement is beneficial if you have the tools and time. However for Octavia with EPB You can’t do without a scanner—buying or renting one will eat up part of the savings. Also keep in mind that the service provides a guarantee on the work (usually 6–12 months), and if you replace it yourself, all the risks are on you.

If you decide to go to the service center, check in advance:

• Is it included in the price bleeding the brakes and EPB adaptation.
• Do they use new mounting bolts or twist the old ones.
• Do they provide a guarantee on work (not on spare parts!)?

FAQ: Frequently asked questions about replacing rear discs on an Octavia

Is it possible to replace only one disk if the second one is still in good condition?

No, the disks are always changed a couple on one axis. Different thickness or condition of the discs will lead to uneven braking and the car pulling to the side. The exception is if the second disk is almost new (for example, it was replaced a month ago), but even then it is better to install both.

Do I need to change the pads along with the discs?

Not necessary, but recommended. New discs with worn pads will take longer to break in, and old pads may contain metal particles from the old discs, which will accelerate the wear of the new ones. If the pads are in good condition (friction layer thickness > 5 mm), they can be left, but thoroughly cleaned of dirt.

How often should you check the rear discs on an Octavia?

Every 30,000 km or once every 2 years - whichever comes first. Also, a check is required when replacing pads, after severe overheating of the brakes (for example, after mountain descents) or if you notice signs of wear (creaking, beating). On Octavia A7 and FL with EPB It is better to do diagnostics more often - the electronic handbrake masks disc wear.

What happens if you don't replace worn rear discs?

The consequences depend on the degree of wear:

• Will increase braking distance (by 20–40% with critical wear).
• will appear vibration on the steering wheel or brake pedal.
• On models with EPB the handbrake can jam in the on position.
• Risk disk destruction at high speed (especially if there are cracks).
• Accelerated wear step bearing due to disk runout.

Is it possible to sharpen the rear discs instead of replacing them?

Grooving is possible if the disc thickness remains unchanged after processing not less than the minimum allowable (17.8 mm for Octavia). However, keep in mind:

• The cost of turning (1,500–2,500 rubles per disc) is often comparable to the price of new non-original discs.
• Groove does not eliminate internal cracks and changes in the structure of the metal due to overheating.
• On Octavia with EPB Grooving may disrupt the operation of the pad wear sensors.

Conclusion: grind only if the discs new, but affected by overheating (for example, after aggressive braking). In other cases, it is better to install new ones.