Crossover braking system Nissan Qashqai the second generation, known in the J11 body, is a critical component ensuring traffic safety. The rear brakes in this model are often equipped with discs combined with a wheel bearing, which makes their replacement a more complex and responsible procedure compared to the front axles.
Owners often face the need for replacement due to natural wear and tear or corrosion, which is especially aggressive in winter. Brake discs Nissan Qashqai J11 require careful selection, since the wrong choice of material or geometry can lead to steering wheel beating, vibrations and an increase in braking distance.
In this article we will analyze in detail the technical characteristics, criteria for selecting quality spare parts and installation features. You will need to evaluate the current state of the system and understand when replacement becomes inevitable and when you can limit yourself to maintenance.
Design features and technical parameters
Crossover rear axle Nissan Qashqai J11 has its own unique features that set it apart from many of its competitors. Ventilated or non-ventilated discs are used here, depending on the configuration and year of manufacture, but the key point is the integration of the hub.
Most rear discs for this model are made as a single unit with a wheel bearing. This means that when you replace a disc, you will most likely also replace the bearing. Hub diameter and the number of mounting holes must exactly match factory specifications, otherwise installation will be impossible or unsafe.
The main dimensions that you need to focus on when searching for spare parts: the disc diameter is usually 280 mm, and thickness - from 10 to 12 mm depending on the version. It is important to take into account the height of the hub part, since its deviation even by a millimeter can lead to problems with the ABS sensor.
The material of manufacture also plays a role: standard gray cast iron provides good heat transfer, but is susceptible to rust. Some manufacturers offer wheels with a coating that protects against corrosion while maintaining the aesthetics of the wheel.
β οΈ Warning: Never attempt to use rear discs from a J10 or J12 model on a J11 vehicle. Hub dimensions and mounting locations may vary, resulting in impossibility of wheel installation.
| Parameter | Meaning | Note |
|---|---|---|
| Disc diameter | 280 mm | Standard on most trim levels |
| New disc thickness | 12 mm | Minimum permissible - 10 mm |
| Number of holes | 4 pcs. | Bolt pattern 4x114.3 |
| Hub height | 50-55 mm | Including bearing |
Symptoms of wear and condition diagnosis
Understand that rear brake discs Nissan Qashqai J11 require replacement, based on a number of characteristic features. Unlike the front wheels, wear here may be less noticeable visually due to the closed design of the wheel rims, so diagnosis requires a more thorough approach.
The first warning sign is often vibration of the brake pedal or body during heavy deceleration. This suggests that disk surface became uneven, beats or deep grooves appeared. A grinding noise may also occur if wear has reached a critical point and the pads rub against the hub.
Visual inspection through the spokes of the disc reveals corrosion, which can be so deep that it compromises the integrity of the metal. If you see cracks or chips on the working surface, the operation of such a unit is strictly prohibited.
Another indicator is uneven wear on the brake pads. If one of them wears out much faster than the other, this may indicate that the disc is out of place or scored, which is why the pad is not pressed evenly.
- Vibration when braking
- Creak and grind
- Pulling the car to the side
- Didn't notice any problems
Criteria for choosing a manufacturer and type of disk
The spare parts market offers a huge selection of options: from original parts Nissan to analogues from the world's leading brands. The choice depends on your financial capabilities and driving style. For quiet city driving, high-quality analogues are suitable, but for aggressive driving, it is better to consider reinforced options.
Original wheels guarantee a perfect match to the geometry and quality of the alloy, but their cost is often inflated. Many car owners choose proven analogue brands, such as TRW, Brembo, ATE or Meyle, which offer excellent value for money.
When choosing, pay attention to the type of coverage. Wheels with an anti-corrosion coating (often silver or gold in color) retain their appearance longer and are better able to withstand road salts. This is especially true for the rear axles, where ventilation is poorer and moisture accumulates faster.
You shouldn't skimp on buying "no-name" disks of unknown origin. Cheap alloys can quickly overheat, deform and even crack under heavy braking. Quality certification - a mandatory requirement when choosing.
- π Check the packaging for holograms and manufacturer barcodes.
- π‘οΈ Give preference to discs with a protective coating against corrosion.
- βοΈ Make sure there is a warranty for the included wheel bearing.
Before purchasing, be sure to compare the catalog numbers on the old disk and in the manufacturer's catalog. Sometimes for the same model there are different modifications of discs depending on the type of engine and gearbox.
Replacement process and necessary tools
Replacing rear discs with Nissan Qashqai J11 is a task of medium complexity that requires certain skills and tools. Since the disc is often assembled with the hub, the process is different from simply replacing front discs, where the hub remains in place.
You will need a jack, wheel chocks, a set of sockets and wrenches, and a special hub puller (if the disc cannot be unscrewed by hand). Be sure to prepare WD-40 or a similar liquid to treat rusty bolts, as they often become permanently stuck.
Before starting work, it is necessary to remove the rear wheels and remove the brake caliper. Be careful not to let the caliper hang from the brake hose; hang it from a wire or hook. This will prevent damage to the flexible line.
Unscrew the caliper guides and remove it along with the pads. Next, you need to unscrew the bolts securing the disk to the hub. If they are stuck, use a penetrating lubricant and give it time to work.
βοΈ Replacement tools
After removing the old disk, clean the seat on the axle shaft from rust and dirt. This is critical so that the new disc sits evenly and there is no wobble. Install the new assembly and tighten the fasteners to the recommended torque.
How to tighten the bolts correctly?
The bolts securing the disk to the hub should be tightened in a cross pattern with a force of approximately 25-30 Nm to avoid distortion. After installing the wheel, tighten the wheel nuts with a torque wrench to a torque of 100-110 Nm.
Nuances of grinding in and running in new discs
After installing new brake discs Nissan Qashqai J11 it is important to break them in correctly. This process allows the pads and discs to βgrind inβ to each other, providing maximum braking performance.
During the first 200-300 kilometers, sharp and emergency braking should be avoided. Try to brake smoothly, with moderate force, giving the discs time to cool down. This will help form an even layer of padding on the surface of the disc.
If immediately after replacement you brake sharply at high speed, local overheating may form on the surface of the disc, which will lead to staining and subsequent runout. Run-in - this is the key to a long service life of the unit.
It is also recommended to check the tightness of the disc mounting bolts and the condition of the calipers after the first hundred kilometers. Vibrations can loosen fasteners if they were installed without a torque wrench.
Proper running-in of new discs increases their service life by 30-40% and ensures stable braking without vibrations in the future.
Frequent maintenance errors
Many car owners make common mistakes when replacing or servicing rear brakes, which shortens the life of the parts. One of the most common problems is neglecting to clean seating areas. Dirt and rust between the disc and the hub lead to misalignment and runout.
Another mistake is using old brake pads with new rotors. If the pads have significant wear or an uneven surface, they will act as an abrasive, quickly wearing down the new, clean disc. Always replace discs and pads as a set.
Improper lubrication of the caliper guides can also cause jamming. Use only special high-temperature lubricants for brake systems. Regular motor oil or lithol will quickly burn out or wash away, causing the piston to seize.
Sometimes during assembly they forget to install or correctly adjust the handbrake mechanism. This can lead to the fact that the handbrake will not hold the car on a slope or, on the contrary, will constantly brake the wheels, causing overheating.
β οΈ Attention: Never lubricate the working surface of the disc or brake pads. Even a minimal amount of oil getting on the friction linings will make braking impossible and lead to an emergency.
- β Do not ignore cleaning the hub seat before installation.
- β Do not install new discs on worn pads.
- β Do not use unsuitable lubricants for the caliper guides.
FAQ: Answers to popular questions
How often do you need to change rear brake discs on a Nissan Qashqai J11?
Service life depends on driving style and operating conditions. On average, rear discs last from 60,000 to 100,000 km. However, with frequent trips around the city or in off-road conditions, replacement may be required earlier.
Is it possible to replace only one disk on one axis?
No, this is absolutely not recommended. Differences in disc wear and performance will result in uneven braking, which can cause the vehicle to skid. Always replace disks in pairs.
Why did vibration remain after replacing the disk?
Vibration can be caused by several reasons: dirt on the seat, a crookedly installed disc, wheel bearing wear, or beating of the disc itself due to a defect. All these nodes need to be checked.
Do I need to change the wheel bearing when replacing the disc?
On the Nissan Qashqai J11, the rear disc is often assembled with a hub and bearing. If you buy a complete disc, the bearing changes automatically. If the disk is separate, then the bearing needs to be checked for play and noise, and replaced if necessary.
Which drives are better: ventilated or non-ventilated?
For the rear wheels of the Nissan Qashqai J11, non-ventilated discs are more often used, since the load on the rear axle during braking is less than on the front. Use only the types of discs specified by the manufacturer for your configuration.