Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
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
  #1  
Old 02-22-2018, 05:44 PM
Member
 
Join Date: Apr 2012
Location: long island
Posts: 67
chris95559 is on a distinguished road
more reliable 4.6is or 4.8is

guys i need some quick answers before i pull the trigger on one. whats more reliable or would you trust with 150k miles? i know the timing chain guides on the 4.6is and trans can be issue and stem seals on the 4.8is were replaced at 80k. not sure which to buy both have great service history.????
Reply With Quote

Sponsored Links

  #2  
Old 02-22-2018, 06:14 PM
PropellerHead's Avatar
Member
 
Join Date: Dec 2006
Location: At the wheel of a Bimmer
Posts: 1,867
PropellerHead is on a distinguished road
Quote:
Originally Posted by chris95559 View Post
guys i need some quick answers before i pull the trigger on one. whats more reliable or would you trust with 150k miles? i know the timing chain guides on the 4.6is and trans can be issue and stem seals on the 4.8is were replaced at 80k. not sure which to buy both have great service history.????
The biggest difference will be the technology between the two. X Drive began in 2003 for MY2004 production. The 4.8is will also have some more techno-goodies like auto headlights, 2 axle air suspension, etc.

I like the smaller sunroof in the 4.6. And the sunglasses holder it allows. It's the little things. My '04 3.0 was early enough production that it had the smaller roof. Still wish I could have that in my 4.8is.

Of course those things also break.

For reliability at 150k miles on any E53, you're going to find many of the same costs for the 'big things' that go wrong. 80k is low for the seals. Mine were fine at 114k but I replaced them proactively.
__________________
Reply With Quote
  #3  
Old 02-22-2018, 06:23 PM
Member
 
Join Date: Apr 2012
Location: long island
Posts: 67
chris95559 is on a distinguished road
I had a 4.8is back in the day. i have a 15 m5 and looking for an around town car and suv when i need it. both cars have full documented service history and the 4.8is had stem seals at 80k, will it need them again? the 4.6 has tons of service all at bmw 1 owner but i can't find anything on the chain guides and that scares me. i don't know which is the better bet? seems like the 4.8 is because at least the stems seals were done once, where the 4.6 never had the chain guides?
Reply With Quote
  #4  
Old 02-22-2018, 07:35 PM
smokeyyank's Avatar
Member
 
Join Date: Jan 2017
Location: Colorado
Posts: 213
smokeyyank is on a distinguished road
Ha ha reliable e53, I don't know if those words can go together. Are you planning to work on it yourself or have a shop do everything? That should be your starting point. If you can DIY, 4.6 just because they are a little more rare. Personally get a 3.0 if you're dead set on a X5 and want something decently reliable. The 3.0 is pretty solid for the E53's but doesn't have the same "fun" factor as a big ol V8. If you want a secondary back up car that is decently reliable I'd honestly look for something else.
__________________
Current garage:
'03 4.6is Proud X5 Peasant
'93 Jeep Cherokee (XJ)
'07 Jeep Liberty (KJ)
'88 Jeep Comanche (MJ)
Reply With Quote
  #5  
Old 02-22-2018, 07:49 PM
Premier Member
 
Join Date: Jun 2015
Location: Southlake, Texas
Posts: 2,094
X53Jay4.8is is on a distinguished road
Quote:
Originally Posted by chris95559 View Post
guys i need some quick answers before i pull the trigger on one. whats more reliable or would you trust with 150k miles? i know the timing chain guides on the 4.6is and trans can be issue and stem seals on the 4.8is were replaced at 80k. not sure which to buy both have great service history.????
Pick your Poison and enjoy the outcome!!!
Reply With Quote
  #6  
Old 02-22-2018, 08:11 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 4,627
andrewwynn is on a distinguished road
If you are fairly handy the chain guide job is not terrible but the V8 is not in the same class of reliable as the i6 no doubt. We have two 3.0i and I would be ok with trading ONE for an 8 for the fun factor but I've taken advantage numerous times to steal a part from one car to get the other operational and if I switch to an 8, a lot of parts no longer swap.


Sent from my iPhone using Tapatalk Pro
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
  #7  
Old 02-22-2018, 08:24 PM
Member
 
Join Date: Apr 2012
Location: long island
Posts: 67
chris95559 is on a distinguished road
I've owned two 4.4, a 3.0 and 4.8is in the past when they were fairly new and I'm very familiar with these vehicles. I know the 3.0 is the best of the group of reliability. I only want a 4.8is or 4.6is and my questions is between the two which do i go for? again, both have similar miles great service records 4.8is had stem seals done at 80k but i can't find anything on the timing guides for the 4.6. The 4.6 is the cleaner of the two. I need to pick one like tonight and I'm stumped. I wish someone with mechanical experience on both could chime in...
Reply With Quote
  #8  
Old 02-22-2018, 09:09 PM
Member
 
Join Date: Apr 2011
Location: NEW YORK
Posts: 793
electricalserv x5 is on a distinguished road
I have had both.The4.6is got me hooked and I now have the 4.8is......much moe reliable.....the engine is better design too[2 timing chains] if its a 06 4.8is then the valve stem are the up dated ones.........You really have to change the oil every 4k
__________________
2006 4.8IS
65K MILES
PURCHASED 7/13
Reply With Quote
  #9  
Old 02-22-2018, 09:13 PM
Member
 
Join Date: Apr 2011
Location: NEW YORK
Posts: 793
electricalserv x5 is on a distinguished road
also a great tip..............change out the vanos solenoids ........the old ones are most likely stuck in the advances position.
__________________
2006 4.8IS
65K MILES
PURCHASED 7/13
Reply With Quote
  #10  
Old 02-22-2018, 09:20 PM
Member
 
Join Date: Apr 2012
Location: long island
Posts: 67
chris95559 is on a distinguished road
its an 04 BUT the stem seals were changed in 2012 so it would certainly have updated stem seals. are you sure the newer stem seals are "updated" so if they were changed i don't have to worry about that? it was done at bmw too
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 06:23 PM.
vBulletin, Copyright 2019, 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.