Member Since: 24 Oct 2013
Location: Morayshire
Posts: 83
Brakes on D4
Sorry if this has been posted on here before.
When I had my D3 I upgraded the discs to grooved and vented and they were brilliant, my D4 brakes don't seem to be a patch on these......
Can I change the discs on my D4 for grooved and vented discs.
Fell like I have to really push pedal at times to get the car to stop
Would be grateful for any info on this thanks
Norma
14th Nov 2013 8:42 am
RBP
Member Since: 29 Aug 2012
Location: N Yorks
Posts: 1936
Norma, I'm surprised to hear this - had heard D4 brakes were excellent & didn't need modifying. Sure someone will be along soon who knows more than me.
14th Nov 2013 9:48 am
Hairy Dan
Member Since: 19 Jan 2011
Location: Co. Durham
Posts: 12319
I would say that the brakes on my D4 are excellent and I have full confidence in them Cheers Ian
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Fronts on D4 are bigger than D3 so it should stop better. They are already vented and as Dan says dont usually have an issue bringing the beast to a halt.
You don't say what age is your D4 is as they do still wear quite quickly (depending on driving style / type of course) so may need to be replaced if warn or pitted.
Mine were replaced at 50kCheers Ian
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14th Nov 2013 10:56 am
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731
D4 discs are the same size as RRS Brembo discs (same as I have fitted) and the pads have a similar surface area.
Personally, I would be trying another set of pads. A cheap compound will give poor braking effort My D3 Build Thread
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
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Brakes on a D4 are very very good so you have a problem.
It could be pads but from your brief description I would be suspicious of the braking system itself.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 24 Oct 2013
Location: Morayshire
Posts: 83
Thanks for that. Its a 10 plate and done 55k. I normally just do town driving as i am a childminder and some long runs. Might try new pads and see if that helps.
14th Nov 2013 12:06 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
No, get your brakes checked properly.
Worn pads can make the pedal travel excessive but still check the pedal travel.
If the pedal 'pumps-up' you have air in the system so look for a cause. Check for damaged brake pipes and check the brake calipers. Check the brake vacuum pipe for air leaks and check the brake vacuum pump and brake booster. Check the fluid level too.
If the pedal sinks to the floor when held under pressure when there are no external leaks you have a master cylinder fault.Land Rover - Turning Drivers into Mechanics Since 1948
+1 to what Robbie says , but would also get the discs checked as they may be down to their min thickness.
Town driving = lots of braking
a simple check is .... is there a significant 'lip' on the outer edge of the disk > 1mm? If so, they may well be worn beyond recommended limits and need replacing Cheers Ian
___________________________________________
MY13 FL2 HSE lux - just gone
MY10 D4 XS
MY07 D3 SE
Massey Ferguson 400 FIS AGTV - Arctic Cat by any other name...
Citroen C3 Picasso for SWMBO so we can remember what fuel economy is!!
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Last edited by outofyorkshire on 14th Nov 2013 12:22 pm. Edited 1 time in total
14th Nov 2013 12:20 pm
sacimiddx
Member Since: 09 Mar 2007
Location: hants
Posts: 2143
Yup Robbie correct
Std D4 brakes excellent
Std D3 brakes a bit of a liability TBHIllegitimi Non Carborundum
14th Nov 2013 12:22 pm
bobgolden
Member Since: 16 Oct 2010
Location: South Yorkshire
Posts: 907
Mine squeal like mad when reversing first thing in the morning but always stop the car. Anyone know if there's a fix or TSB for the squealing ? Farrell's have shamfered the pads way back in2010 but not much better and they basically say "that's the way they are". Seem to last ok as I've done 15k miles and only 40% worn.2010 MX-5 2.0 Sport Tech PRHT
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14th Nov 2013 9:39 pm
steveraspberry
Member Since: 18 Sep 2011
Location: Nr Sevenoaks,Kent
Posts: 2081
Did they apply any Copperslip to the backs of the pads before they fitted them. Whip them out and have a look but I'd clean the backs and apply the CS to them anyway. Obviously, you don't want any on the face of the pad, just the rear of the metal - HTH?My17 Volvo XC90 Inscription
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15th Nov 2013 1:57 am
al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10297
Just about to order some pads for mine
Is changing them the same as the D3, i.e calipers in carriers, or is the front set up ala RRS Brembo (mines a 3Ltr not a 2.7) with the calipers bolted directly to the hub?
And, I'm hoping there's no special winding in tool needed for pushing the pistons back in.
Let me know
Cheers
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15th Nov 2013 2:52 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731
Exactly the same method as D3. Pistons push straight back, no special tools needed My D3 Build Thread
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10297
Cheers Mikey
AlVolvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
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