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Model specific boards => Golf mk4 => Topic started by: Zayd on 01 July 2012, 15:28

Title: Which brakes are used the most
Post by: Zayd on 01 July 2012, 15:28
Hello peeps.

Can anyone elaborate as to which brakes, the front or rear, are used the most on a 1999 MK4 Golf GTI AGU.  I did hear somewhere that the rears were actually used more and the fronts only came into play during harder braking.  My specialist says the fronts are used more.
Title: Re: Which brakes are used the most
Post by: DunnDeal12 on 01 July 2012, 15:34
come on mate who ever told you the rear brakes were used more needs shooting. why do think the fronts are bigger? think the rears only account up to 10-20% of braking
Title: Re: Which brakes are used the most
Post by: wasps1990 on 01 July 2012, 16:10
front m8
Title: Re: Which brakes are used the most
Post by: Viking on 01 July 2012, 16:30
Depends what sort of braking you're doing. If you're just pootling about town and braking gently then the rears do most of the braking. Only when you're cracking on and braking hard does the fronts do more.
Title: Re: Which brakes are used the most
Post by: rio_gti on 01 July 2012, 16:36
During hand break turns the fronts are used 100%
Title: Re: Which brakes are used the most
Post by: Anthony on 01 July 2012, 17:36
The rears are hardly used exept if you have a load fat birds in the back or your towing or breaking hard. hence the small disks on the rears ! do an emergancy stop , the car will nose dive at the front cos the front brakes are doing all the work  :laugh:
Title: Re: Which brakes are used the most
Post by: Viking on 01 July 2012, 17:41
In an emergency stop, yes the fronts do all the work. But braking gently to a halt will use mostly the rears.
Title: Re: Which brakes are used the most
Post by: Ant1981 on 01 July 2012, 18:20
come on mate who ever told you the rear brakes were used more needs shooting. why do think the fronts are bigger? think the rears only account up to 10-20% of braking

Maybe he does handbrake turn parallel parking a lot?
Title: Re: Which brakes are used the most
Post by: DunnDeal12 on 01 July 2012, 18:58
In an emergency stop, yes the fronts do all the work. But braking gently to a halt will use mostly the rears.

lol this made me laugh.
Title: Re: Which brakes are used the most
Post by: Viking on 01 July 2012, 19:01
In an emergency stop, yes the fronts do all the work. But braking gently to a halt will use mostly the rears.

lol this made me laugh.
Many things make me laugh as well.

But it's true...
Title: Re: Which brakes are used the most
Post by: Ant1981 on 01 July 2012, 19:23
It's usually 60% front and 40% rear, but the modern electronics will distribute braking according to traction control feedback.
Title: Re: Which brakes are used the most
Post by: cullygti on 01 July 2012, 19:29
It's usually 60% front and 40% rear, but the modern electronics will distribute braking according to traction control feedback.

60-40 is what i always thought to
Title: Re: Which brakes are used the most
Post by: DunnDeal12 on 01 July 2012, 19:38
In an emergency stop, yes the fronts do all the work. But braking gently to a halt will use mostly the rears.

lol this made me laugh.
Many things make me laugh as well.

But it's true...

but its not  :laugh:
Title: Re: Which brakes are used the most
Post by: Bandit127 on 01 July 2012, 19:40
It's usually 60% front and 40% rear, but the modern electronics will distribute braking according to traction control feedback.
Ahh - sense at last...

Which is why your front discs are roughly bigger by 60%/40% than your rears....

The same hydraulic pressure goes to the calipers at the front and back unless ABS steps in. Even with gentle braking.

Since the total piston (and pad) area is smaller in the rear calipers, the braking force is smaller by the same amount. Even with gentle braking.
Title: Re: Which brakes are used the most
Post by: Ant1981 on 01 July 2012, 19:45
It's usually 60% front and 40% rear, but the modern electronics will distribute braking according to traction control feedback.
Ahh - sense at last...

Which is why your front discs are roughly bigger by 60%/40% than your rears....

The same hydraulic pressure goes to the calipers at the front and back unless ABS steps in. Even with gentle braking.

Since the total piston area is smaller in the rear calipers, the braking force is smaller by the same amount.

A braking compensator adjusts the hydraulic pressure distribution, but yes hydraulic pressure and friction area have their own merits.
Title: Re: Which brakes are used the most
Post by: Bandit127 on 01 July 2012, 19:49
A braking compensator adjusts the hydraulic pressure distribution, but yes hydraulic pressure and friction area have their own merits.
AFAIK, ABS equipped cars don't have them.

They are only needed on the old fashioned cars without ABS (like Mk2s and previous). And even then they only actually reduce the pressure under heavy braking so the back doesn't lock up.
Title: Re: Which brakes are used the most
Post by: Viking on 01 July 2012, 19:58
Ever wondered why light brakers wear the rear pads & discs out more than the front ones? I had 2 sets of rear brakes on the last car at 140k miles, and one set of fronts. I'm not a heavy braker.

Have a search on TDIClub for rear brake bias, it's interesting reading....
Title: Re: Which brakes are used the most
Post by: lemski on 01 July 2012, 20:02
Maybe you callipers were stickin. I've never heard the rears do more brakin than the front. I have customers who don't heavy brake and they replace the fronts more than the rears
Title: Re: Which brakes are used the most
Post by: DunnDeal12 on 01 July 2012, 21:08
Ever wondered why light brakers wear the rear pads & discs out more than the front ones? I had 2 sets of rear brakes on the last car at 140k miles, and one set of fronts. I'm not a heavy braker.

Have a search on TDIClub for rear brake bias, it's interesting reading....

lol at viking, never had it my front wear down quicker than the rears. your caliper was sticking mate.
Title: Re: Which brakes are used the most
Post by: mcgee9t2 on 01 July 2012, 21:14
Have a search on TDIClub for rear brake bias, it's interesting reading....

they drive deisels... i wouldnt trust anything they say
Title: Re: Which brakes are used the most
Post by: Ant1981 on 01 July 2012, 22:00
Have a search on TDIClub for rear brake bias, it's interesting reading....

they drive deisels... i wouldnt trust anything they say

We need a 'like' button.
Title: Re: Which brakes are used the most
Post by: cullygti on 01 July 2012, 22:06
(http://i1002.photobucket.com/albums/af149/cullygti/like.jpg)
Title: Re: Which brakes are used the most
Post by: Viking on 01 July 2012, 22:35
Bloody Luddites.   :grin:
Title: Re: Which brakes are used the most
Post by: Dave_IOW on 01 July 2012, 22:52
Yeah non ABS fitted cars have to have compensators, ABS equipped ones don't.

Pissing things, need one myself  :angry:
Title: Re: Which brakes are used the most
Post by: wasps1990 on 02 July 2012, 19:40
i like the like button lmao
Title: Re: Which brakes are used the most
Post by: Zayd on 11 July 2012, 04:22
te
Title: Re: Which brakes are used the most
Post by: theshrew on 11 July 2012, 11:25
Feck me ive never heard so much gash as some of the replies on this thread. Gotta love the internet for people saying stooooopid things about cars.

Fronts are used more than rears = FACT
Title: Re: Which brakes are used the most
Post by: Dalo Harkin on 11 July 2012, 12:14
Another 60 / 40 unless you were breaking using the handbrake  :grin: