The braking system of a car is the basis of your safety and the safety of passengers on the roads. For owners Nissan Sunny the issue of servicing this system is especially acute, given the specific operation of this model in city and highway conditions. Pads are a consumable item that requires regular inspection and timely replacement to avoid costly repairs to calipers or discs.
Many car owners mistakenly believe that brakes can only be serviced when grinding noise occurs. In fact, ignoring early signs of wear can lead to complete machine failure. Timely diagnosis and the correct selection of spare parts is a guarantee that your Nissan Sunny will remain a reliable companion for many years.
In this article we will look in detail at how to choose the right pads, which brands are trustworthy, and how to replace them yourself, saving money on service. We will also pay attention to the subtleties that are often missed during repairs, so that you can avoid common mistakes.
Signs of wear and the need for diagnostics
Determine if the brake pads are on your Nissan Sunny require replacement, based on a number of characteristic symptoms. The most obvious sign is the appearance of a metallic grinding or squeaking sound when you press the brake pedal. This indicates that the friction layer has completely worn away and the metal base has begun to contact the brake disc.
In addition to noise, problems are indicated by changes in pedal behavior. If it has become too soft or, conversely, requires excessive force, this may indicate wear on parts or air entering the system. It is also worth paying attention to the length of the braking distance: if the car brakes worse than before, an urgent inspection is necessary.
Visual inspection is the most reliable way to check. Through the window in the caliper or by removing the wheel, you can estimate the remaining thickness of the friction lining. If it is less than 2-3 millimeters, operation of the vehicle is strictly prohibited. Ignoring this rule will lead to scuffing of the discs and damage to the caliper pistons.
- 🔊 The appearance of a metallic squeak or grinding noise when braking
- 📏 Friction lining thickness less than 2 mm
- 🛑 Increased braking distance or steering wheel vibration
- 💧 Brake fluid leakage (a sign of piston wear)
Don't wait until the car stops braking completely. Regular condition check brake pads should be part of your routine maintenance. Even if you rarely drive your car, the pad material can dry out or degrade over time, losing its properties.
Original or analogue: manufacturer's choice
Before purchasing new parts, it is important to determine the manufacturer. Official dealers offer original spare parts Nissan, which are guaranteed to fit in size and specifications. However, their cost is often too high, and their service life does not always correspond to the high price.
There are many high-quality analogues on the market from trusted brands. Japanese manufacturers such as Nisshinbo or Uniparts, often produce products of the same quality as the original, but at a more affordable price. European brands e.g. TRW or Akebono, are also an excellent choice for Nissan Sunny, offering a balance between cost and durability.
Budget options from little-known Chinese manufacturers may be attractive due to their low prices, but they often suffer from uneven wear, dust and poor braking performance. Saving on security is always a risk. It is better to choose a proven manufacturer in the mid-price segment than to chase the cheapest.
- 🏆 Original Nissan: quality guarantee, high price
- 🇯🇵 Japanese analogues (Nisshinbo, Uniparts): excellent price/quality ratio
- 🇪🇺 European brands (TRW, Akebono): reliability and durability
- ⚠️ Cheap analogues: risk of rapid wear and loss of efficiency
When choosing, be sure to check the packaging for protective holograms and markings. Counterfeits often have unclear printing, misspelled names, or incorrect geometry of the pads themselves. Inspect the details carefully Before installation: the cover must be tightly glued to the metal base without gaps.
⚠️ Attention: Do not buy brake pads from markets or dubious online stores without the possibility of authentication. Saving 500 rubles can cost you tens of thousands of dollars in caliper and disc repairs.
Specifics of front and rear pads
Brake system design Nissan Sunny involves the use of different types of pads on the front and rear axles. The front pads experience a significantly greater load, since they take on up to 70-80% of the braking force. Therefore, they wear out faster and require more frequent replacement.
Rear pads, especially if they are paired with a drum mechanism (which is often found on basic models), last longer. However, if you have disc rear brakes, uneven operation of the rear axle can cause the vehicle to skid under hard braking.
When replacing, it is important to consider not only the size, but also the material of the friction lining. For city driving, pads containing metal (metallic or semi-metallic) are better suited, as they dissipate heat well. Ceramic compounds are suitable for a quiet and dust-free ride, but they may be less effective during emergency braking.
- ⚖️ Front pads: high load, frequent replacement
- 🔧 Rear pads: long service life, but control is necessary
- 🌡️ Materials: metal ceramics for the city, organics for the highway
- 🔄 Pairing: change pads only along axes (both sides at once)
Never change just one side of the axle. If you replaced the right front pad, be sure to replace the left one as well. Otherwise, an imbalance in the braking forces will occur, which will cause the car to pull to the side when you press the pedal. This is critical for safe management on a slippery road.
- Original Nissan
- Japanese analogues (Nisshinbo)
- European brands (TRW, Brembo)
- Budget options
Preparation for replacement and necessary tools
Before starting work, make sure you have all the necessary tools and materials. You will need a jack, reliable stands for the body, a set of wrenches, a pry bar, and special lubricant for the caliper guides. Without proper lubrication, the caliper can seize, leading to overheating and uneven wear.
Clean the area around the caliper from dirt and dust. Use a wire brush to clean the seats. Dirt trapped under the pad can cause squeaking and accelerate wear. Also have new brake cleaner ready - they will need to degrease the rotors and caliper parts before reassembly.
- 🔨 Tools: jack, wheel wrench, 12, 14, 17 mm wrenches
- 🛢️ Consumables: brake cleaner, guide lubricant, WD-40
- 🧤 Protection: gloves, glasses to protect eyes from dust and splashes
- 📐 Gauge: Vernier caliper to check disc thickness
If they become sour, the pads will not move away from the disc, which will lead to their overheating. Before installing new parts, be sure to check the mobility of the piston and guides.
☑️ Preparing to replace pads
Step-by-step instructions for replacing pads
Start by loosening the wheel bolts while the vehicle is stationary. Raise the car with a jack and place it on a safety stand. Remove the wheel and begin dismantling the caliper. Usually you need to unscrew two guide bolts from the back of the caliper.
Carefully remove the caliper and hang it on a wire or rope to avoid damaging the brake hose. Do not allow the caliper to hang on the hose as this may damage it. Remove the old pads and carefully inspect their condition and wear.
Then you need to push the caliper piston back into the body. Use a special tool or vice, but do it carefully so as not to damage the rubber boot. Before doing this, open the cap of the brake fluid reservoir, as the fluid level will rise when the piston sinks.
Install new pads in place. If there are metal brackets (adapters), transfer them from the old pads to the new ones, after cleaning and lubricating them. Make sure the pads move freely in the bracket and do not bind. Return the caliper to its place and tighten the guide bolts to the required torque.