Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 02-12-2009, 03:32 PM
X5 Meister's Avatar
Member
 
Join Date: Mar 2006
Location: Nordschleife
Posts: 5,486
X5 Meister is on a distinguished road
The rears ARE the same for the facelift X5's (with the N62 engine). You are looking at older X5's with the M62 engine. BMW changed the brakes on X5's several times during the production run (ie. in the very beginning of the X5's life the rears were solid rotors and not vented ones).

Quote:
Originally Posted by ncsucarjock
There are several guys with the 4.8is running 18" winter wheels, so I'm not terribly concerned about that.

For the poster who states that the rear brakes are the same, they are not.

The calipers, rotors, and pads are different. I've put together this table...

You need the calipers, caliper carrier, rotors, pads. The master cylinders are the same.

Sorry about the horrible legibility of this...formatting doesn't do well here.

REAR

4.6is 4.4i

Disc 34216756849 34216765458
caliper left 34216757055 34216768443
caliper right 34216757056 34216768444
bracket 34216757058 34216768438


FRONT

Disc 34116756847 34116765457
caliper 34116757053 34116773132
caliper 34116757054 34116773131
bracket 34116757057 34116768437
Pads


Master cylinder 34316757743 34316757743



Please note that the caliper numbers are the shell - they do not include pistons or seals. My local parts store cannot get the calipers.

Based on the prices I see, this is probably cost-prohibative to a lot of folks. You basically need to find a wrecked 4.6is or 4.8is and be able to steal everything that you need off of one, in order to do this economically. That being said, it would probably be worth my while (and pay for itself in the long run) to upgrade just the front brakes. After all, they do most of the work, and since the master cylinder is the same, I don't think you'd significantly un-balance the braking system.

Last edited by X5 Meister; 02-19-2009 at 04:35 AM.
Reply With Quote

Sponsored Links

  #12  
Old 02-19-2020, 01:10 AM
Member
 
Join Date: Feb 2011
Location: Calgary, Canada
Posts: 1,958
Clockwork is on a distinguished road
To all who have done this upgrade from a 4.4 to 4.8iS factory brake system, is it worth it? I have an opportunity to buy used but good condition rotors and calipers and pads for $750 CDN and am wondering if it is worth the spend?
__________________
I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

_______________________
'91 850i
'05 X5 4.4i
Reply With Quote
  #13  
Old 02-25-2020, 04:21 AM
Member
 
Join Date: Jan 2019
Location: LI, NY
Posts: 43
Dinan4.6is is on a distinguished road
I may be willing to part the Dinan front & rear Brembo upgraded kit from my 4.6iS
Literally just put new pads front & rear a month ago (front calipers take 4 pads each for a total of 8). Massive red Brembo calipers and drilled 2-piece rotors. Also stainless steel hoses.
__________________
2003 X5 4.6is DINAN S2
Imola Red
Reply With Quote
  #14  
Old 02-25-2020, 01:47 PM
Member
 
Join Date: Feb 2011
Location: Calgary, Canada
Posts: 1,958
Clockwork is on a distinguished road
My question still is, is it worth it? The factory brakes are quite good as is, I find.


Sent from my Pixel 3 using Tapatalk
__________________
I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

_______________________
'91 850i
'05 X5 4.4i
Reply With Quote
  #15  
Old 02-27-2020, 09:24 PM
Green Dragon's Avatar
Member
 
Join Date: Feb 2011
Location: Utah
Posts: 335
Green Dragon is on a distinguished road
I can't comment as of yet from first hand experience..... but I will have some freshened up 4.8is calipers and s/s lines mounted up in a couple weeks. The calipers are getting blasted and coated at the moment. Also of note, I am trying out ECS's sealed brass caliper guides. This gets rid of the rubber guides. The ECS caliper pins travel in a machined brass housing that has seals on either end. They are designed to create a much more precise, rigid braking movement. Less flex and more square. They claim to closely approximate the feel of a mono block multi-piston caliper, at least as closely as a floating caliper can. Here's a link for those intrested. https://www.ecstuning.com/b-ecs-part...003326ecs02~a/

I decided to do the retrofit as I have gathered that they are a nice upgrade. I know they are a heavier package, also adding weight to the undesirable side of the equation... un-sprung mass. But, for the money and ease of install I went this route. I wanted to upgrade to something, but still be able to run my 18" snows. There are a few upgrade options using OEM Brembo calipers from Land Rover Sports and the like. A quick search on here yields a few threads for a couple different retrofits, including direct bolt ons from the e70, e85 X5///M. Some of them require the use of 20" wheels permanently, which may be fine for many in the sunbelt.

I will see how my 3.0 feels with the extra mass as well as a considerable increase in braking performance. I am really going to need some braking performance........ more to come.
__________________
2005 X5 3.0, 6MT, Alpine White on Truffle Brown, Sport, Preim, and Cold Weather, Alpina replica Stainless Headers, AFe Intake, Schmiedmann Custom SSK, OEM 87's, 3.64 Differential Swap,Performance Modified Euro 2 Tune, UUC LTW Flywheel and HD clutch, Bilstein B12 Suspension kit
Future mods ZHP/Schrick Cam Shaft upgrade, Operation code name:Doppelschrauben-Kompressor

Wife's Ride: 2004 X3 3.0, 6MT, Black Sapphire on Terracotta, Sport, Premium, Cold Weather.
Reply With Quote
  #16  
Old 02-28-2020, 06:08 PM
Member
 
Join Date: Mar 2007
Location: Seattle, WA
Posts: 260
e39_touring is on a distinguished road
I just did this a few months ago and will say it's worth it. Your price seems a bit high as I think I paid about $150 for all 4 calipers and brackets (ebay). I put new jurid/textar pads & zimmerman rotors on and rebuilt the calipers, which I think was about $300-350 for a total of $450-500. Might be higher for your since you're up north.

Definitely much improved braking. The new brakes grab much more than the old, but I attribute that to crappy dustless pads that were on the old system more than the larger brakes. I notice the biggest difference in fade when towing a trailer (~2500 lbs). I had some fade on the old brakes while towning, and none on the new setup, and she stops NOW!
__________________
2012 xDrive35d
2001 BMW X5 3.0i 5MT
and two 1987 Corvettes - Callaway Twin Turbo and Guldstrand Grand Sport 80
Block Tester
Reply With Quote
  #17  
Old 02-28-2020, 08:51 PM
Member
 
Join Date: Feb 2011
Location: Calgary, Canada
Posts: 1,958
Clockwork is on a distinguished road
Ok good to know. On all accounts. I kinda thought $750 was too costly so I shy'd away.

Sent from my Pixel 3 using Tapatalk
__________________
I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

_______________________
'91 850i
'05 X5 4.4i
Reply With Quote
  #18  
Old 07-17-2020, 01:25 AM
Member
 
Join Date: Feb 2011
Location: Calgary, Canada
Posts: 1,958
Clockwork is on a distinguished road
So I installed my new (to me calipers and rotors with new Juris brake pads on used factory rotors (I had turned) and now my pedal definitely is not as firm as before and seems the brakes take longer to stop than my factory 4.4i calipers with factory pads and factory rotors.
I fully rebuilt the calipers. It was fun doing it actually. Painted and heated in oven. Inspected pistons and all rubber boots/sleeves and bought new guide pins and proper brake assembly fluid (Holy crap does that make things slide soooo easily during install of parts).
Perhaps I'm doing the brake bleed on my x5 wrong. I don't need to use INPA or DIS5.7 to activate anything, do I?
I figured it was a normal bleed where you start at right rear and then left rear, right front, left front and have a celebratory drink... Not so much this time

Sent from my Pixel 3 using Tapatalk
__________________
I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

_______________________
'91 850i
'05 X5 4.4i
Reply With Quote
  #19  
Old 07-22-2020, 08:31 PM
Member
 
Join Date: Feb 2011
Location: Calgary, Canada
Posts: 1,958
Clockwork is on a distinguished road
So, the next day I brought my X5 to my local Indy and paid for them to do a bleed with machine/pressurized fluid. Zero change.
So I bought 2 new Zimmermann rotors.
I just installed them and STILL notice more travel in brake pedal is needed than for a single piston caliper.
I HATE this.
The 4.4i has such SHORT pedal travel before brakes engage very well.
Pedal travel is 50% longer now before brakes engage well.
Even with new Jurid pads, new Zimmermann rotors and fully rebuilt calipers (and these guide pins are slippery since I used the Raybestos Hydraulic brake assembly fluid). I will NEVER use anything on the guide pins again other than that assembly fluid.

So far I don't feel the 4.8iS brake system stops the vehicle any faster than the factory 4.4i brake setup BUT I have to do another brake bleed.

I do not haul anything in my x5 nor do I race my x5. I live in a climate where summers can be between 25 and 30 deg C daily but winters are -40 to +20 C (yes you read that correctly) so I rely on great stopping power all year.


Sent from my Pixel 3 using Tapatalk
__________________
I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

_______________________
'91 850i
'05 X5 4.4i
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 09:33 AM.
vBulletin, Copyright 2020, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.