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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57
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16answers
255k 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 ...
27
votes
7answers
265k 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 ...
20
votes
3answers
2k 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 ...
18
votes
9answers
189k 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 ...
18
votes
3answers
1k 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 ...
17
votes
4answers
944 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. ...
16
votes
5answers
5k 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 prosperity. Anyway, the front rotors were machined and are within the legal ...
15
votes
4answers
5k 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 ...
15
votes
8answers
56k 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 ...
14
votes
2answers
547 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?
14
votes
0answers
74 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 ...
13
votes
3answers
16k 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
4answers
12k 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 ...
13
votes
6answers
65k 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 ...
13
votes
2answers
824 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
3k 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
5answers
432 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 ...
12
votes
4answers
25k 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?
12
votes
3answers
4k 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 ...
12
votes
1answer
133 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 ...
11
votes
7answers
41k 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 ...
11
votes
3answers
134 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
147 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 ...
10
votes
3answers
52k 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?
10
votes
1answer
73 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
98 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 ...
10
votes
1answer
9k 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
11answers
51k 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 ...
9
votes
3answers
8k 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 ...
9
votes
5answers
1k 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
15k 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 ...
9
votes
2answers
162 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 ...
9
votes
1answer
49 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 ...
8
votes
3answers
14k views

brake squeal and grinding rotor even if I had just installed new pads

I have just noticed that my brakes started squealing non stop even though the pads are fairly new (8 months with just 7,000 km on it). Also I have just noticed last night that one of the brakes is ...
8
votes
1answer
110 views

How do disk brake pistons retract?

If drum brakes consist of a several springs inside and outside the fluid cylinder to retract the brake shoes after braking, how disk brakes piston, that dont have any springs, can retract alone ...
8
votes
1answer
14k 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 ...
8
votes
2answers
137 views

Squealing brakes on 14 ' Audi S4 (B8.5)

I have a 2014 Audi s4 (B8.5) that has around 35,000 km and the brakes are already squealing when I slow down by braking gradually. The sound is intense, and very annoying. It comes and goes but for ...
8
votes
1answer
99 views

Disc brakes don't stop!

I just completed building a little hot rod with four wheel disc (kit-Chev) brakes. All new parts through-out. With rear wheels on stands off ground, pressing brake pedal does not stop wheels when in ...
7
votes
3answers
1k views

Rotor Replaced and MY Car is only 3 years old

I went to pep boys because i heard squealing and my pads were worn down. he also told me that i needed to replace my rotors so not knowing anything i did but i asked them tog ive them to me so i could ...
7
votes
3answers
3k 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 ...
7
votes
2answers
160 views

Sequence for bleeding brake lines?

There are 4 brake calipers on most cars. Is there a proper order in which to bleed them when bleeding brake lines, or can you bleed them in any order with the same result?
7
votes
2answers
200 views

removing spindle cap

Trying to remove rusted spinlde cap to change brake drum shoes but it seems to be stuck. Tried to grab eyeglass screw driver flat and oil lubricant spray can to remove the rust but it is pretty stuck. ...
7
votes
1answer
135 views

Brakes grinding when roads are snowy

I have a 2013 Chevy Cruise that has new brakes changed by the dealership, and they work perfectly in the rain, and dry conditions. But when there's snow on the ground, the brakes often start grinding, ...
7
votes
3answers
208 views

Cause of double trailer dump truck brake lockup

Earlier today I was driving behind a double-trailer dump truck configured something like this: As we approached a red light, the driver obviously applied the brakes, and for the last 50 or so feet ...
7
votes
3answers
53k 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 ...
7
votes
2answers
66 views

How do brake lines connect to their respective fittings?

I'm planning on replacing a leaky section of brake line for the rear driver side wheel on my 2004 Hyundai Getz 1.3 Gsi. The section of brake hose is relatively short, with one end connected to the ...
7
votes
1answer
77 views

Brakes Slipping/malfunctioning

I recently got in a car accident because my brakes failed to work. It felt as if when I pressed them, they had slipped. I tested the brakes after-the-fact to see what the problem was, and this problem ...
7
votes
2answers
68 views

Occasional ABS fault

'04 Cavalier, 120K mi. We've had it for 6 years, driven every winter. Now, this winter, we occasionally get an ABS fault. This probably always occurs under slipping conditions. When it happens, ...
7
votes
1answer
37 views

Bleeding Brakes 2002 Bonneville with ABS

I had to replace the 2 brake lines that go from the master cylinder to the ABS control box. I bled all 4 brakes in the proper order, (RR,LR,RF,LF) but the brakes are minimal and the pedal goes to the ...
7
votes
4answers
491 views

VW Passat Estate B5 - Parking brake suddenly slack but cable not broken

The handbrake on my VW Passat Estate B5 has suddenly become slack. With the handbrake on, the faulty side wheel is free to turn by hand. Foot brake works as normal Lifting the center console, I can ...