Owners Skoda Octavia A4The, also known as the Tour, is often faced with the need to replace consumables, as this model continues to be in demand in the secondary market and in taxi fleets. The braking system here is under serious strain, especially if the car is operated in the urban cycle with frequent stops. Ignoring timely replacement can lead to costly calipers repairs or damage to brake discs.
Choosing the right set of brake linings is critical for safety. There are many offers on the market: from original spare parts to cheap analogues of unknown origin. Incorrectly selected shoes can cause vibration, creaking, and in the worst case - loss of braking efficiency in an emergency. You need to understand the difference between materials and manufacturers to make an informed choice.
Features of the Octavia A4 Tour brake system
Brake design on the platform PQ35 It has its own nuances that distinguish it from later models or competitors. The front axle is usually equipped with ventilated discs, which provides better cooling during intensive braking. The rear axle, depending on the configuration and year of release, can have both disc and drum brakes, although for versions with powerful engines, discs are more common.
The sizes of the brake mechanisms vary depending on the engine and the version of the configuration. For example, versions with 1.6 MPI and 1.9 TDI engines often use the same calipers, but reinforced nodes may be installed for turbocharged versions of 1.8 TSI or 2.0 TDI. It is necessary to specify catalog numbers before buying, as visually similar calipers can have different seats for the pads.
Particular attention should be paid to the wear sensor. In the system Skoda It's integrated into the front left pad. When the friction layer is abraded to a critical level, the sensor closes the circuit, and the corresponding indicator lights up on the dashboard. Ignoring this signal leads to the fact that the metal base of the pad begins to erase the disc, which requires replacing the entire kit.
If they are acidified, then the pads will press unevenly, which will lead to rapid overheating and deformation of the disk. Regular maintenance of guides with lubrication is the key to a long life of the brake system.
Original or analogue: what to choose for reliability
Dealers often offer original parts under the logo. Skoda or VW. In fact, these parts are produced by leading global concerns, such as: TRW, ATE or BremboBut with a higher margin. The quality of the original is always stable, but the cost can be unreasonably high for a used car.
Analogues from proven brands are often the best choice in terms of price-quality ratio. For example, brands Textar, Zimmermann or Textar produce pads that are not inferior to the original in the composition of the friction mixture. In some cases, they even exceed it in resource, especially in conditions of Russian roads and climate.
- 🔹 Original It is ideal for those who do not want to understand manufacturers and are willing to overpay for the guarantee of compatibility.
- 🔹 TRW / Lucas One of the most popular VAG suppliers, reliable and durable.
- 🔹 ATE German quality, often used on the conveyor, but the price is above average.
- 🔹 Brembo Great choice for sports riding, but can be more noisy in normal mode.
Do not save on the cheapest analogues of unknown manufacturers. Low-quality mixture can dust, overheat and lose efficiency even under moderate loads. As a result, you risk losing control of the car during a sharp braking. The most critical factor is the lack of quality certificates from budget brands, which makes their use unsafe.
When choosing analogues, be sure to pay attention to the presence of the necessary hardware in the kit. Often, along with the pads are new spring clips and wear sensor. If they are not, you will have to buy separately, which will increase the final cost of repair and work time.
- Original (Skoda/VW)
- Premium analogs (ATE, Brembo)
- Mid-segment (Textar, TRW)
- Budget options
Symptoms of wear and diagnostics before replacement
The first sign that the pads need replacement is the characteristic metal grinding when braking. This suggests that the friction layer has completely disappeared, and the metal is rubbed against the metal. In this case, the operation of the car is unacceptable until the fault is eliminated.
Another signal is vibration of the steering wheel or brake pedal. This may indicate not only wear of the pads, but also deformation of the brake discs. If the disc has a production or beat, the new pads will not work properly and the problem will remain.
- 🔸 The appearance of red plaque on the discs is a sign of overheating and the beginning of the destruction of the friction material.
- 🔸 Increased brake pedal stroke - may be due to wear of the linings or problems in hydraulics.
- 🔸 The car takes away when braking - a sign of uneven wear or acidification of the caliper.
Visual examination is the most reliable method of diagnosis. Removing the wheel, you can estimate the thickness of the friction lining. If it is less than 2-3 mm, the replacement should be carried out immediately. It is also worth checking the condition of the caliper anthers and the condition of the brake fluid.
Before the diagnosis, be sure to let the brakes cool down. Hot discs can cause burns when accidentally touched, as well as distort the thickness measurement results due to thermal expansion of the metal.
Step-by-step instructions for replacing brake pads
Replacing the front pads with Octavia A4 It does not require a complex tool, but requires accuracy. First, you need to lift the car on the jack and remove the wheel. Then you need to unscrew the calipers guides, which are usually located behind and above / below depending on the caliper model.
After removing the caliper, it must be hung on the wire so as not to damage the brake hose. Then the old pads are removed. They often sit tight and require the use of an mounting spatula. It is important not to damage the guide plates to which the pads are attached.
☑️ Preparing for replacement
Before installing new elements, it is necessary to clean the seats and lubricate the guides with a special heat-resistant lubricant. Applying lubrication to the friction surface is strictly prohibited. You also need to press the caliper piston back into the body, using a special tool or vise, having previously unscrewed the lid of the tank with brake fluid.
Installation of new shoes is done in reverse order. If you have a wear sensor, it needs to be connected to the wiring. After assembly, be sure to press the brake pedal several times before the stop appears to press the pads against the disc. Otherwise, the first press can lead to the failure of the pedal.
If you have rear drum brakes, the process will be more difficult. It is necessary to remove the drum, squeeze the springs and replace the pads. Note that the rear calipers with electric parking brake require the use of a diagnostic scanner for retracting the piston. Special adapter for the rear calipers It is often sold with tools.
What to do if the piston does not press in?
If the caliper piston is not pressable, check if the brake hose is twisted. Also make sure that the brake fluid tank cover is open so that the liquid can return to the tank. In some cases, it helps to use a special tool to rotate the piston (if it has threads).
Running in new pads and maintaining the system
After replacing the brakes, a burnishing procedure, or "lapping", is necessary. In the first 200-300 km of run should avoid sharp braking and extreme loads. This allows the frictional material to settle evenly on the surface of the disc, providing a maximum contact area.
During operation, monitor the condition of the brake fluid. It is hygroscopic and absorbs moisture over time, which reduces the boiling point and can lead to brake failure when overheating. It is recommended to change the liquid every two years or 40,000 km of run.
- ✅ Use only standard brake fluid DOT 4 or higher than recommended by the manufacturer.
- ✅ Periodically check the level of fluid in the expansion tank.
- ✅ Clean the calipers of road dust and dirt with each change of wheels.
If you notice that new pads creak, do not rush to panic. Sometimes it takes time to fully launder. However, if the creak does not disappear after 500 km, it is possible that there is a problem with the quality of the material or lack of lubrication on the metal parts of the pad.
Proper in-working of new pads in the first 300 km is the key to their durability and braking efficiency. Avoid sudden stops and overheating of the system.
Compatibility table and dimensions of brake elements
For convenience of selection of spare parts below is a table with the main dimensions and compatibility for various modifications Octavia A4. This data will help you avoid errors when ordering parts in online stores or markets.
| Equipment / Engine | Type of brakes in the front | Disc diameter (mm) | Disc thickness (mm) | Producer of calipers |
|---|---|---|---|---|
| 1.6 MPI (102 hp) | Ventilated | 256 | 22 | TRW, ATE |
| 1.9 TDI (105 hp) | Ventilated | 288 | 25 | ATE, Brembo |
| 1.8 TSI (160 hp) | Ventilated | 288 | 25 | TRW, Brembo |
| 2.0 TDI (140 hp) | Ventilated | 312 | 25 | ATE, Girling |
| RS (2.0 TSI) | Ventilated (reinforced) | 345 | 28 | Brembo, ATE |
Please note that the sizes may vary slightly depending on the year of production and the manufacturer. Always check the VIN code of the car when ordering. The use of discs and pads is not in size can lead to the inability to install the wheel or friction on the caliper.
Answers to frequently asked questions from owners
Is it possible to change only the front pads?
Yes, technically it is possible, but it is recommended to change the pads on the axes (both front wheels at the same time). If one set is worn out badly, another on the same axis is likely to be close to the end of the resource. This will ensure uniform braking and safety.
Do I need to change brake discs and pads?
Not always, but often necessary. If the discs have deep grooves, cracks or beats of more than 0.05 mm, they are better replaced. If the disc has a sufficient margin of thickness (above the minimum mark) and a smooth surface, you can do only by replacing the pads.
Why does the lamp burn after replacing the pads?
This can be due to two reasons: either the wear sensor has not been replaced (it is disposable), or the sensor wiring is shorted. On some models, you need to reset the error through a diagnostic scanner, even if the sensor is working.
What lubricant should I use for the guides?
Use only special high-temperature brake lubricant (usually blue or red). Regular lithium or graphite grease can destroy the rubber boots and cause the caliper to seize.
How long does it take to replace front pads?
For an experienced technician, replacing the front pads takes about 30-40 minutes per wheel. If you do this yourself for the first time, allow about 1.5-2 hours so as not to rush and do everything efficiently.