Brake discs for Priora: selection, installation, reviews. LADA Priora

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The brake system is an important part of any car. Lada Priora is no exception. It is important to monitor the correct operation of the elements and, if necessary, replace them. What brake discs to put on the Priora and how to replace them with your own hands? All this and more - further in our article.

Signs

By what symptoms can you determine that you need to replace the brake discs on the Priore? The main sign of wear is the behavior of the car. If the working surface of the disc is deformed or worn, the brakes will “wedge” when you press the pedal. Also, when the pads are triggered, a strong rattle is possible (not to be confused with the squeak of the friction material itself). If there is a crack, braking is accompanied by a beating against the steering wheel. The friction lining touches the slightest beads and other irregularities on the working surface of the disc.

As a result, its material crumbles, and you feel increased vibration. It can be transmitted not only to the steering wheel, but also throughthroughout the body. Depends on the severity of wear or the amount of deformation. In this case, it is recommended to make a visual inspection of the element. If there are no visible cracks, remove the wheel and run your finger along the working surface of the disc. If you feel irregularities, this indicates that the element has overheated and deformed due to expansion and contraction. It is worth noting that the beating of the steering wheel can only be when you press the pedal. If this symptom is observed while driving, you may have unbalanced wheels or one of the weights has fallen off. Often these vibrations increase with speed.

About groove

Is it smart to repair brakes? Priora is a relatively inexpensive car, but the cost of turning old discs is up to 75 percent of the cost of new elements. In addition, this recovery method is ineffective for severe deformations in the form of cracks and large wear (the thickness of the working surface is less than 6 millimeters). Reviews from motorists say that a smart decision would be to buy a new set of discs. When grooving old ones, the likelihood of repeated symptoms is high. After a couple of thousand kilometers, such a car begins to vibrate again, and the brakes become not so informative. Moreover, it doesn’t matter whether the groove was performed on the removed element or directly on the hub. If you want to be sure of your safety, put new brake discs on the Priora. Which is better to choose - we will consider further.

Varieties

Now on the shelves of stores they offer two types of discs for Priora.

It is non-ventilated and perforated. Which brake discs on the Priore will be more efficient? Let's take a look at each type.

Unventilated

These are the simplest brake discs that are installed on the basic equipment of Lada Priora cars. It is believed that this type has an outdated design and is practically not used on modern machines. Foreign manufacturers installed non-ventilated discs in the distant 90s of the last century. Starting from the “zero”, even the budget class was equipped with ventilated elements.

The disc itself is a round blank with a thickness of 10 to 20 millimeters. Often it is made by casting - this is one continuous element. More expensive counterparts have a collapsible design. They can change the work surface. But their price is several times higher than the cost of brake discs on the Priora of the usual cast type. The range ranges from one and a half to seven thousand rubles. The “budget” niche is occupied by non-ventilated discs, due to their simple design.

Perforated

These elements have a more complex structure. The design combines two thin metal discs with a thickness of 5 millimeters. Between them there are so-called channels through which the air flows. Thanks to such ventilation, the operating temperature of the disk is reduced by one and a half to two times. And as we know, during braking, a friction force arises, which is converted into thermal energy. Drives need good heat dissipation.

If it's not there, the metal will overheat. As a result, we get literally crooked discs, and possibly cracked ones. It also reduces the stopping distance. Compared to non-ventilated counterparts, it is 15 percent lower. In addition, the service life of the brake pads is increased, since the friction material no longer works under critical thermal loads.

A few facts

Initially, perforation appeared on sports cars. The working part of the brake disc was drilled on special equipment. The result was through holes and grooves through which air circulated from the center out. A few years later, perforation began to be used on ordinary civilian cars. But, despite such popularity, the price of such disks has not decreased at all, since the production technology has remained the same. In addition, high precision is required. At the slightest discrepancy with the standard, such a disc is rejected and is not available for sale.

About braking performance

When the pads come into contact with the disc, gases (boundary layer) are formed that prevent good adhesion of the friction material to the working surface. Due to the presence of grooves, they are easily brought out. In the case of non-ventilated discs, these gases continue to slide over the metal, preventing the pads from working properly. As a result, the stopping distance increases. As we have already said, preformation allows you to reduce its length by 15 percent. Provides 100% adhesion between the metal of the disc and the work surfacepads. In some cases, in addition to holes, grooves are used. They have a depth of about two millimeters and are directed in the direction of disk rotation. The grooves clean the working surface well from accumulated dirt, sand and other deposits that formed there when the car was driving. In the absence of perforation, this dust settles deeply on the surface of the disc. Because of this, there is a creak when braking. The driver cannot understand the cause of the malfunction, especially if the pads were recently replaced.

What to choose in the end?

Which front brake discs to put on the Priora? Reviews of motorists agree on one thing - it all depends on the driving style. If you prefer an aggressive style, with sharp acceleration and braking, the presence of perforations and grooves is a must for you. But if the car is used for a leisurely ride, there is reason to think about installing non-ventilated discs. A compromise option is to buy ventilated discs without perforation, but with grooves.

This is the average price range - from 3 to 5 thousand rubles per unit. So you can be sure that the system is working and ensure maximum driving safety by reducing the braking distance by several meters. Plus, if it's alloy wheels, these grooves will give your car more sportiness.

Original and fake

Now there are a huge number of fakes on the market that are sold under the famous brands Zimmerman, ATE, Bosch and Brembo. It is quite easy to distinguish the original from the copy. First of all, this is the thickness of the disk. If it is less than one centimeter, you most likely have a copy in your hands. Reviews of motorists recommend attention to the junction of the two parts of the disk. The internal grooves should connect smoothly to the work surface.

If there is a strict 90 degree angle, such discs will simply crack. Well, the last factor is the price. It is two to three times lower than the original. Compare the cost of the same model at different outlets. If it differs significantly, and the disc has a different weight, a fake is sold in one of the stores.

Dismantling and installation

So, the new items have been purchased and are waiting to be installed. Installation can be done by hand. To do this, we need a standard set of tools.

Tools

To install new brake discs on the Priora, we need a chisel, a jack, a balloon, a hammer, a clean container up to 500 ml, a screwdriver, a medical syringe, as well as a set of sockets and keys for 7, 13 and 17 millimeters. The last two we will unscrew the caliper and pads.

What's next?

First, put the car on the handbrake and put back the counter-recoils. Next, with a balloon wrench, we tear off the wheel bolts and jack up the front part. Remove the wheels and unscrew the brake fluid reservoir. Using a vacuum syringe, we pump out a part into a previously prepared container until the level in the tank drops to half. So we will exclude it from getting on the pads during their dismantling. Next, we need a thick negativescrewdriver. We install it between the outer brake pad and caliper and pull back the piston. It is important not to damage it - for this reason, work very carefully. Then we take the “13” key in our hands (you can take a horn or a ratchet) and unscrew the lower fixing bolt. If there is a locking bracket, turn it with a screwdriver or bend it with a chisel with a hammer. Using the “17” key, we press the rotary finger.

Raise the bracket, take out the pads, remove the two bolts going to the caliper and unscrew the disc itself with the “7” key. Then you can put new brake discs on the Priora. Assembly is done in reverse order.

Tips

When replacing the disc, install new pads. This is a required step. Some manufacturers include a pair of new pads when buying a disc. Also keep it symmetrical. Let's say you have a cracked disk, and you bought one standard "for replacement". If you put a new one on only one side, there will be an uneven distribution of braking forces and asymmetric wear. The same applies to pads. They only change in pairs. Also, when replacing, pay attention to the condition of other parts - caliper anthers, guides. If there are backlashes and signs of deformation/wear, replace them. After the brake discs have been successfully installed on the Priora, add fluid to the reservoir and bleed the system. The presence of bubbles in it is unacceptable - braking on such a car becomes ineffective. The liquid just boils from compressing the air.

Ohresource

The term for replacing this element directly depends on your driving style. The more often you accelerate and brake, the lower the resource of the node. The factory brake discs installed on the Priora can withstand up to two hundred thousand kilometers. But with aggressive driving, this period can be less than a hundred thousand. If possible, brake in gear and shift to neutral ahead of a red traffic light. Use more "rolling" - this will not only save discs and pads (the latter change every 25 thousand kilometers), but also increase the gearbox resource. It also saves a lot of fuel.

So, we figured out how to choose the right brake pads and install them on the Lada Priora car with our own hands.