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Hard braking - Keeping her straight
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OnlineR60BBA
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Hard braking - Keeping her straight
Does anyone suffer from their Zed pulling to either side whilst under hard braking?
The car does not do this under normal braking, only when I’m pushing it and have to brake hard for an emergency as an example.
I have a fresh set of tyres, front pads are thick, rears are a little low but there is easily 3,000 miles left in them.
The car does not do this under normal braking, only when I’m pushing it and have to brake hard for an emergency as an example.
I have a fresh set of tyres, front pads are thick, rears are a little low but there is easily 3,000 miles left in them.
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
- GAZA62
- Lifer
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Hard braking - Keeping her straight
What's the road surface like ? if there any sort of ruts it can pull the car around even on non RFT sports suspension and wide low profile tyres do no give as much
T.SILVER 2004 3.0SE AUTO
IF IT WAS NOT FOR BAD LUCK I'D HAVE NO LUCK AT ALL
IF IT WAS NOT FOR BAD LUCK I'D HAVE NO LUCK AT ALL
- Marlon
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Hard braking - Keeping her straight
You've checked the pads so could be uneven tire pressure, Stuck caliper, collapsed brake hose, worn suspension parts
Gone: 3.0si 2008 E85
911 997 Carrera S
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OnlineR60BBA
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- Joined: Sat Sep 30, 2017 7:53 pm
- Location: London, United Kingdom
Hard braking - Keeping her straight
It happens on normal smooth surfaces but only when braking hard.
Only noticed it 2 days ago...
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
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OnlineR60BBA
- Senior Member
- Posts: 1776
- Joined: Sat Sep 30, 2017 7:53 pm
- Location: London, United Kingdom
Hard braking - Keeping her straight
Is there anyway to diagnose a sticking caliper or collapsed brake hose without visiting a mechanic
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
- Marlon
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Hard braking - Keeping her straight
I will let the 'mechanics' among us answer that one - personally I'd get my Indy to take a look
Gone: 3.0si 2008 E85
911 997 Carrera S
- Ducklakeview
- Lifer
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- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
Hard braking - Keeping her straight
If it's only under hard braking, I'd be checking the lollipops as a first call. If they are soft/worn, they allow the car to "self steer" under heavy braking. Quick test you can do with it on the ground, handbrake on - Then put your hands at the 12 O'clock position on top of the front tyre, and try hard to move it back and forth in the direction of normal travel. If a bush is soft/worn, it will allow the wheel to move forward and backward slightly.
Mike
Mike
- patriot66
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Hard braking - Keeping her straight
I'd check tyre pressures and look for uneven tyre wear first. Are the brake pads/discs in good condition ? Jack each front wheel up and spin it to see if caliper is binding and check track rod ends, ball joints and bushes on each front wheel whilst it's of the ground. Hold the wheel at 9-3 and 12-6 o'clock and give it a bloody good pull/rock.
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OnlineR60BBA
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Hard braking - Keeping her straight
It’s not tyres as I put a brand new set of PS4s on last month.patriot66 wrote: ↑Thu Mar 08, 2018 11:24 am I'd check tyre pressures and look for uneven tyre wear first. Are the brake pads/discs in good condition ? Jack each front wheel up and spin it to see if caliper is binding and check track rod ends, ball joints and bushes on each front wheel whilst it's of the ground. Hold the wheel at 9-3 and 12-6 o'clock and give it a bloody good pull/rock.
It’s not pads either (refer to original post). However my discs have a slight lip and I don’t know when they were last changed, so the problem could be related to them.
I’ll check the play in the joints this weekend to see if there’s any movement. If not, it will be another trip to Munich Legends
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
- jabber
- Lifer
- Posts: 3138
- Joined: Mon Jul 05, 2010 9:23 am
- Location: Hampshire
Hard braking - Keeping her straight
A small lip on a disc is fairly normal due to pad size only a problem if it is a a large lip indicating excessive disc wear
Z less again
14 E89 Z4 2.0 msport grey gone now
10 E89 Z4 3.0 Black auto now. Very sadly gone
Gone 04 E85 z4 3.0 Maldives blue smg
14 E89 Z4 2.0 msport grey gone now
10 E89 Z4 3.0 Black auto now. Very sadly gone
Gone 04 E85 z4 3.0 Maldives blue smg
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Hard braking - Keeping her straight
after normal use, is one of your brake discs hotter than the other? a sticking caliper will leave the pads rubbing the disc slightly, so will heat one disc up despite not actually braking.
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OnlineR60BBA
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Hard braking - Keeping her straight
I wouldn’t know how to test this?brillomaster wrote: ↑Thu Mar 08, 2018 2:03 pm after normal use, is one of your brake discs hotter than the other? a sticking caliper will leave the pads rubbing the disc slightly, so will heat one disc up despite not actually braking.
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI
- ph001
- Lifer
- Posts: 3870
- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
Hard braking - Keeping her straight
Drive along a relatively straight flat road trying to use the brakes only minimally. Park up the car and check the temperature of each disc. They should be the same side to side. Just be careful as they do get very hot if you have been hard on the brakes.
To be honest, a sticking caliper has always been really evident to me - you can feel it with the car in neutral when coasting to a stop from very low speed on a flat road. Any kind of binding and the car grabs just a fraction before it comes to a standstill.
To be honest, a sticking caliper has always been really evident to me - you can feel it with the car in neutral when coasting to a stop from very low speed on a flat road. Any kind of binding and the car grabs just a fraction before it comes to a standstill.
Last edited by ph001 on Thu Mar 08, 2018 4:53 pm, edited 1 time in total.
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Hard braking - Keeping her straight
The Z4 has emergency brake assist so when you brake hard the car decides to brake even harder. Would have thought the stabilty control would cut in if the computer thought there was a problem with traction. Then I could be wrong. After you have used the brakes hard crouch down on all fours near a wheel, not a good look, and see if your face can detect if one of the calipers are hotter.
- Marlon
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Hard braking - Keeping her straight
Chuckle of the day - thanksraymond.harper wrote: ↑Thu Mar 08, 2018 4:09 pm . . . After you have used the brakes hard crouch down on all fours near a wheel, not a good look, and see if your face can detect if one of the calipers are hotter.
Gone: 3.0si 2008 E85
911 997 Carrera S