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Questions tagged [brakes]

Brake systems on vehicles are typically driven by either pneumatic or hydraulic systems that multiply the force applied by an operator to slow a vehicles rate of speed through the use of friction.

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72
votes
16answers
481k views

Should I resurface or replace my rotors everytime I replace brake pads?

I have heard it is proper practice to replace or resurface your brake rotors every time your do a brake pad replacement. Does this need to be done every single time or is it overkill? Maybe it is ...
40
votes
7answers
597k views

what is the difference between DOT3 and DOT4 brake fluids?

What is the difference between DOT3 and DOT4 brake fluids? What could possibly go wrong if I use a (4 times cheaper) DOT3 brake fluid instead of the DOT4 which manufacturer recommends (but allows ...
33
votes
9answers
486k views

When do brake rotors really need to be replaced?

I need to replace my rear brake pads. A mechanic suggested I also replace my rotors because they are rusted around the edges. The rotors are in fact quite rusted, however, there is no rust on the ...
21
votes
4answers
4k views

What are these loops in the brake line for?

I was watching a show on the Velocity network about truck modifications, and I saw the following closeup of the trucks master cylinder and booster. What I don't know is why the designers put the ...
20
votes
8answers
20k views

When the handbrake is not working, is it safe to fully depend on putting car into park instead?

I have an old Toyota in which the handbrake wire is broken. I have been using the car for few months now and I don't really want to spend more money on it. I now put the car in park and that is it and ...
20
votes
6answers
6k views

What is regenerative braking and why don't we use it?

I know that many electric cars use regenerative braking to enable the car to become more efficient by converting what would otherwise be lost heat energy in to a more useful, reusable form of energy. ...
20
votes
6answers
212k views

I drove with my Parking Brake on for 30 mins: should I be worried?

Yesterday, I was driving my car for about 30 minutes on the highway at speeds of up to 60 mph. I felt my brakes weren't really working and looked down to notice my emergency brake had been on the ...
19
votes
11answers
200k views

What causes brakes to pulsate right after rotor and pad replacement?

I have a 2002 Infiniti Q45. I replaced the front rotors and pads on Sunday. It was the first time I've done this on a car, though I have done it countless times on various motorcycles. I was careful ...
18
votes
11answers
16k views

What's the best gear to leave a manual vehicle in when parked? [closed]

I've been told that reverse is the "strongest" gear, so in a manual transmission vehicle you should park your vehicle and leave it in reverse in the event of a parking brake failure. Others have said ...
18
votes
3answers
2k views

What is the proper way to bleed brakes and replace the fluid?

What is the proper way to replace the brake fluid in a car? What tools are required? I want to make sure I do not get any air or bubbles in the system as this is something that needs to be done right ...
18
votes
5answers
15k views

Should I depress the clutch pedal when braking to a stop?

When coming to a stop, will depressing both the clutch and brake pedals cause any damage to the engine or transmission? Is there anything mechanically wrong with doing so?
16
votes
11answers
145k views

Use of Neutral Gear in Automatic Transmission

I am new to driving A/T cars and I am trying to understand the use of Neutral(N) gear. Should I shift my gear from D to N when my car comes to a complete halt on a red light or somewhere else? As per ...
16
votes
6answers
7k views

My Car Squeals When Braking Even Though I've Had My Front Rotors Machined and Back Rotors Replaced and all new brake pads. What could it be?

I own a Toyota Soarer SC300 (1994), 2JZ motor non-turbo 3 litre engine. The engine is probably irrelevant, but provided for posterity. Anyway, the front rotors were machined and are within the legal ...
16
votes
7answers
291k views

Clicking type sound when braking at low speeds

Most of the time when I brake at low speeds I hear a clicking type sound, that is fairly faint. I do NOT hear squeaking, grinding or any high pitched noises that might indicate my brake pads are ...
16
votes
4answers
10k views

Is downshifting on hills harmful for non-trucks? [duplicate]

Possible Duplicate: Does Downshifting (Engine Braking) Cause Extra Wear and Tear? Since the days of taking drivers ed (many years back). I was told that when you encounter a steep or extended ...
16
votes
10answers
124k views

At what point do you need to replace the calipers?

I bought my car in February 2013 with 49K miles. It now has 61K miles on it and my brakes are starting to squeak very gently, until I apply more pressure on the brake pedal. When I bought the car, I ...
15
votes
4answers
61k views

brake rotors- blank, slotted or drilled?

There is a lot of conflicting information whether slotted or drilled rotors perform better than blank rotors. For a street car that will do the occasional track day, which type of rotor should I get?
15
votes
5answers
52k views

Change calipers on both sides?

Four months ago, I had a seized brake in the front left. The slide bearing was stuck and the outer pad was worn more than the inner (at the piston). I wasn't able to move the journals of the bearing ...
15
votes
2answers
34k views

Does the brake bleeding sequence really matter?

We've all heard this tip - "start with the wheel furthest from the brake master cylinder and finish with the closest one". Why? Does the sequence really matter? What exactly happens if we don't keep ...
15
votes
2answers
4k views

Brake flush vs. Replacing the brake fluid

Is a brake flush the exact same thing as replacing the brake fluid? Or is there a difference?
15
votes
1answer
391 views

Revving and rattling sometimes when braking

My Tacoma has been making a strange revving and rattling sound when the truck is in motion and the brake or the clutch is pressed and the gas pedal is released. I couldn't reproduce the effect when ...
14
votes
5answers
1k views

Do these EBC brake pads look like a counterfeit?

I have purchased a pair of EBC Red Stuff front brake pads for my Audi S4 from a supplier whose name I will keep anonymous for now. I opened up the box and everything seemed in place except a weird ...
14
votes
5answers
5k views

What are the pros and cons for the two possible “gear directions” when parking the car on a hill?

Let's suppose I leave my car in gear when parking on a hill (besides using handbrake and turning the wheels towards/away from the curb, depending on the direction I'm parking in). In case that matters,...
14
votes
4answers
23k views

What can cause warped rotors?

I have a forward rotor on my '04 Chrysler Sebring causing a lot of pulsation when braking. I replaced the rotor- but within about a month the problem had re-appeared. The guys at Monroe noticed my ...
13
votes
1answer
4k views

What are the pro's and con's of compression braking vs. exhaust braking?

My truck supports 2 types of engine brakes: Compression release brake Exhaust brake Both can be selectively deactivated using switches. What are the pro's and con's of each type of engine braking ...
13
votes
2answers
2k views

How do I drain the brake fluid for a 1999 BMW K1200RS?

I need to drain the brake fluid for my 1999 BMW K1200RS with ABS in order to do some minor service on the Master Cylinder, but I don't have a service manual for the bike. How should I go about doing ...
12
votes
4answers
16k views

Brakes make a “POP” sound and then I can't brake

I have a 1998 Honda Accord. I am driving today and I know that I need new brakes. They make a metal on metal screeching sound when I brake. Today as I go to brake at an intersection I hear a loud pop ...
12
votes
4answers
106k views

I forgot to release the hand brake while I'm driving at around 4 to 5 km. what will happen to my rear brakes?

I forgot to release the hand brake while I'm driving at around 4 to 5km. What will happen to my rear brakes?
12
votes
3answers
148k views

Brakes Smell Bad and Smoke

Here's the situation: Initially Changed a wheel/tire, and snapped a hub stud. Had to take off the brake caliper on that hub (driver's side). No problem with that, but then all of a sudden my front ...
12
votes
3answers
87k views

Is it normal for stop distance to be long on brand new brake pads?

I just had the brake pads replaced in my car. As I left the shop I noticed coming to a complete stop took longer distance or needed a fair bit more force on the pedal. Is this normal? Will the ...
12
votes
4answers
14k views

Brake lights don't illuminate until pedal is pressed by about 5-10mm

2003 Opel Agila My brake lights do not light up until I have pushed the pedal down by about 1cm. If I rest my foot on the brake pedal, with the brakes applied a little bit then the brake lights do ...
11
votes
2answers
55k views

Brakes make grinding noise during stops at low speeds

I've got a Mazda B2300 pickup that's started making a grinding sound whenever I come to a stop. Braking at a high speed doesn't make any noise, but once I get under 25-30 MPH, the grinding sound gets ...
11
votes
2answers
694 views

Brake pedal has “dead zone” in the middle of travel

I have been working on a 1999 Buick Century Custom that had rusted brake lines. I get strange pedal feel that I will attempt to describe: From 0% to about 15% depression, there is resistance and most ...
10
votes
5answers
31k views

Mixing DOT 4 with DOT 4 synthetic

I couldn't see an existing question about this but please link to it if you know of one ... I should point out I'm English and the products described are bought in the UK, in case it makes a ...
10
votes
3answers
17k views

My brake fluid all left on short notice. What gives?

During the very cold weather (here in Ohio) recently, I noticed the brakes on my 2000 Chevy Malibu were a little soft, and made a mental note to attend to them promptly. Then, over the course of 24 ...
10
votes
5answers
27k views

Car shakes when braking: warped rotors or alignment?

I have an 07 Chevy Impala and I'm trying to pinpoint the shaking that occurs when braking. Only shakes when braking slowly on highway. The whole car does shake pretty badly. I just put in a new set of ...
10
votes
1answer
1k views

Brake fade and spongy brakes at high speeds

I was driving my girlfriends Ford Fiesta last week and it started to experience brake fade. It always happened after driving the car at higher speeds over 100kmh (60 MPH). The brake pedal became ...
10
votes
1answer
648 views

Sounds like brake disc is making contact with pad shims

I've been having trouble with a noise from the front left brakes on my 2003 Yaris/Echo/Vitz/Platz. The car takes a beating but is also well maintained. After a long drive with repeated hard braking ...
10
votes
1answer
1k views

Consistent pull to the left when braking

My Chevrolet Astro van consistently pulls to the left when braking. Consistently means: always, the amount is proportional to the pressure applied to the pedal. It doesn't pull to the side if braking ...
10
votes
2answers
51k views

Front right 'squeals' when turning

Hi I have an incredibly frustrating noise coming from the front right of the car. It only occurred after replacing pads and rotors. It occurs when turning left (weight on right) and occasionally going ...
9
votes
3answers
5k views

Squeaky Brakes: How much of a concern are they?

I recently bought a 1998 Jeep Grand Cherokee from a dealership. When we bought it, I noticed that the brakes were not working very well, and the dealer fixed them before we finalized, putting in a ...
9
votes
5answers
4k views

Caliper piston will not collapse on Almera 98

I was changing brake pads on a Nissan Almera 98 and I accidentally pumped the brake piston a bit out. I tried putting it back with a C clamp and the old pad but it won't budge. It's completely stuck! ...
9
votes
2answers
32k views

What are the visual signs that brake rotors must be replaced?

Let's say you take off the wheel (when replacing the pads, for example) and look at the brake rotor. What are the signs that it's time to replace the disc? Let's stick to clear visual signs that don'...
9
votes
1answer
44k views

Why would my electrical systems cut out when I brake?

So I told this little story to the dealership service department, and they were baffled. Never heard of anything like it in ten years, said they'd have to examine it very closely. Here's what ...
9
votes
3answers
21k views

Replace front brake pads and rotors?

I went to my Honda dealership for a B-1 service, and he came back saying that I needed to replace both my front brake pads and rotors. The quote for that is $531. I am wondering if I should go ahead ...
9
votes
2answers
2k views

Do parts (like Brakes) & brake dust still contain Asbestos? What years did parts contain Asbestos (or anything equally / more dangerous)?

Is Asbestos still used in any currently manufactured parts, brakes or others? Specifically asking about the USA & Canada, but info on anywhere else in the world is good too. If it's not still ...
9
votes
1answer
2k views

Fix / Replace ABS module

I have an Audi A6, 2000. My ABS light is on, and the brake light blinks. I was told that the ABS module needed to be replaced at the cost of $850 minimum. Is there a way to get these things fixed ...
9
votes
3answers
283 views

Why aren't my “street performance” pads performing well on the street?

Background I drive a 1989 BMW 325i, and a few months ago I got a brake lining warning light. I gladly took the opportunity to upgrade from OEM rotors and pads to nice, shiny, new cross-drilled and ...
9
votes
3answers
142k views

Is it necessary to flush brake fluid?

I have a 2005 Honda Element. The owners manual states the brake fluid should be "replaced" every 3 years. When I asked the dealer to replace the brake fluid, they said it was going to cost $190. ...
9
votes
1answer
113 views

'04 Daewoo Nubira brakes keep sticking on after disc and pad replacement

On my '04 Daewoo Nubira I have been and had new discs and pads all round and now the brakes keep sticking on, I have been advised I now need new calipers all round, how can I tell if its them or that ...