04-17-2024, 11:39 PM | #23 |
Major General
4527
Rep 5,378
Posts |
I have a friend/neighbor that was a mechanic for the USPS. I asked him about wear & tear on the starters of their vehicles as they are always, well, starting and stopping. He said the starters were the most replaced part on the USPS residential delivery vehicles.
|
04-18-2024, 03:31 AM | #24 | |
Brigadier General
3848
Rep 4,180
Posts |
Quote:
starter wears out but is there wear on the engine? |
|
Appreciate
0
|
04-18-2024, 07:03 AM | #25 |
Major General
5522
Rep 5,440
Posts
Drives: Beige G31 40ix m sport
Join Date: Feb 2016
Location: Kent, The Garden of England
|
On my G31 it’s coded to remember last setting, which is usually off, if I’m in eco mode I tend to have it on.
__________________
G31 40ix M Sport
E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle |
Appreciate
0
|
04-18-2024, 07:45 AM | #26 |
Major
746
Rep 1,102
Posts
Drives: '01 Z3M, '12 335is, '22 540i
Join Date: Jul 2013
Location: FLL
iTrader: (4)
Garage List 2012 BMW 335i [5.25]
2012 BMW 335is [5.00] 2008 Infiniti QX56 [0.00] 1967 Chevrolet Corv ... [10.00] 2001 M Roadster [10.00] 2022 BMW 540i [0.75] 2009 528i [9.50] |
+1 on @Joe-BMW33 reply. My '22 doesn't have the disable button, and there is no standard way to option it out through iDrive. Sport mode will take care of it, but my wife never chooses sport mode and she hates ASS.
|
Appreciate
1
Joe-BMW337414.50 |
04-18-2024, 10:06 AM | #27 |
Brigadier General
5682
Rep 4,624
Posts
Drives: BMW M550i xDrive (2020)
Join Date: Jan 2022
Location: West TN
|
It’s mostly useless. It has to be a very specific traffic situation to really save you anything. It’s just a bullshit trick to make regulators happy.
__________________
2020 M550i xDrive (Champagne Quartz/Black)
2021 X7 40i M-Sport (Arctic Gray/Tartufo) RETIRED: 2018 540i Luxury Line (Dark Graphite/Canberra Beige) |
Appreciate
3
|
04-18-2024, 12:44 PM | #28 |
Major General
5522
Rep 5,440
Posts
Drives: Beige G31 40ix m sport
Join Date: Feb 2016
Location: Kent, The Garden of England
|
It helps meet the emissions regulations & only bothers people like us
__________________
G31 40ix M Sport
E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle |
04-18-2024, 02:58 PM | #29 |
Major General
4527
Rep 5,378
Posts |
|
Appreciate
0
|
04-21-2024, 08:37 AM | #30 | |
Lieutenant
496
Rep 579
Posts |
Quote:
About the only place it is not useful is in stop and go traffic where it de- and reactivates in too short a time span, which is annoying and, ofc, rather ineffective. One of the reasons I can get such great average consumption is that the engine switches off at longer lights. |
|
Appreciate
0
|
04-21-2024, 09:53 AM | #31 | |
Brigadier General
5682
Rep 4,624
Posts
Drives: BMW M550i xDrive (2020)
Join Date: Jan 2022
Location: West TN
|
Quote:
__________________
2020 M550i xDrive (Champagne Quartz/Black)
2021 X7 40i M-Sport (Arctic Gray/Tartufo) RETIRED: 2018 540i Luxury Line (Dark Graphite/Canberra Beige) |
|
Appreciate
0
|
04-22-2024, 11:39 AM | #32 |
Second Lieutenant
153
Rep 280
Posts |
It does what they claim (saves gas and reduces emissions) by definition because if the engine isn’t running it obviously doesn’t do either.
It will absolutely add more wear/tear with it on than off. There’s no way you can get around the fact that when the engine is off, there’s no oil pressure. Granted a warm/hot start isn’t as bad as a cold start when it comes to bearing wear…but it isn’t good either. No coating is going to last forever. Will using ASS automatically mean you will need to trash your engine prematurely? No. If you do loads of highway miles you might have ASS kick in only a handful of times per tank of gas but if you’re in start and go city traffic exclusively it might be hundreds of times or even over a thousand times per tank (which is like a year or two’s worth of starting/stopping). Ultimately whether you want to use it is up to you. “Starter wear” isn’t the thing that I care about. Starters aren’t really that expensive….bearings however are. Is it a silly consideration? Probably. Am I REALLY going to experience bearing failure before I trash my car? Probably not but I also don’t really care about the 0.5-1.0liters per hour I’d be saving. Is it wasteful? Yes. But I also drive for fun, which is by definition 100% waste so the tiny amounts ASS affects is just mental masturbation in the grand scheme of things. |
04-22-2024, 05:44 PM | #33 | |
Lieutenant
496
Rep 579
Posts |
Quote:
For everything else, it does the job well. |
|
Appreciate
0
|
04-23-2024, 10:31 PM | #34 | |
Second Lieutenant
153
Rep 280
Posts |
Quote:
Whether it is worth it is something that you decide on an independent case by case basis The benefits are fuel and carbon savings (actually same thing), the magnitude of which depends on your driving conditions. The costs are all the potential /actual wear and bla bla bla. Extra complication/weight in the system (obviously this isn't remedied by turning it off, we're talking about design stage tradeoffs for this point). Personally I don't think the tradeoffs are worth it and I think these systems, especially earlier iterations (though somewhat true for all of them) were kinda half assed to meet regulatory targets. A PHEV or the older type hybrid(prius) really truly were designed with this in mind so you know EVERY component was designed with this user case in mind. On a normal ICE car especially one who's engine was not a clean sheet design probably didn't have as much of it designed with this use case. Sure they can do simple changes like upgrading the starter or changing the bearings for something of a different spec. But fundamental things can't be changed. How efficient is the cooling/oiling system operating@0 rpms? How long does it take to build up oil pressure? This one might sound stupid but start stop operation is such that you go from engine@0rpm to IMMEDIATELY on load in less than a second (even more so if you have a heavy foot)... That's like 10 turns of the crank... To me the tradeoff is characterised by at best minor gains and costs which are either also equally minor... Or really really bad. It's a lobsided cost/benefit. |
|
Appreciate
0
|
04-24-2024, 03:29 AM | #35 |
Brigadier General
2152
Rep 3,085
Posts |
In my last F31 340i & the 330d before that the ASS was terrible, slow to kick in with the cranking of the starter and would activate it self just when you were wanting to make a swift exit out of a junction, so could just make what would have normally been an okay move into the opposite. I had it set to remember the last setting on start up which ended up with it being off all the time.
Move forward to the G31 LCi and there is no button to turn it off, however if you select any sport mode it will disable it, so on coming up to a junction I just knock the gear lever into sport and as I pull away put it back to normal. Yes a bit of a faf but becomes second nature over time. Also being MHT the starter is not the traditional type it's more an electric motor slight wirr not a typical starter clunk engage, so if it has activated it is virtually seamless when it starts and is, by comparison to older systems, very quick and quiet. It is definately a pain if you are in slow / stop / start traffic as it's forever cutting in & out, so in those situations I just leave it in sport mode. Is it worth it? big question, but when it's working and combined with the coast function and a long run I think it is. Certainly allows me to achieve (so far) a max of 41mpg (uk) on a reasonably long run mix of A roads & motorways which is amazing for a 540i, could never get that from the F31 340i. So I've accepted the function and use the option of sport to control it given that it will improve mpg overall. The system is definately far more refined than it used to be. |
Appreciate
0
|
04-24-2024, 05:29 AM | #36 |
Major General
7415
Rep 6,806
Posts
Drives: '18 M550i|'21 X5|'03 540i
Join Date: Apr 2021
Location: Boston
iTrader: (1)
Garage List 2013 VW Tiguan [0.00]
2015 Infiniti QX60 [0.00] 2021 BMW X5 [0.00] 2003 BMW 540i [0.00] 2018 BMW M550 [10.00] |
I’ll note that when the car is new, the restart is smooth, but over time, they develop a delay and hesitation. Already noticing this on my X5.
__________________
2018 M550ix|Carbon Black|Dinan Modifications|2003 540i|Jet Black|M-Sport|2021 X5 Mineral White
Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi| |
Appreciate
1
NGT25682.00 |
04-24-2024, 06:40 AM | #37 | |
Lieutenant
496
Rep 579
Posts |
Quote:
|
|
Appreciate
0
|
04-24-2024, 09:20 AM | #38 | |
Brigadier General
5682
Rep 4,624
Posts
Drives: BMW M550i xDrive (2020)
Join Date: Jan 2022
Location: West TN
|
Quote:
It’s a feature they’d have never put in if it didn’t help artificially boost some regulation economy numbers. Not saying that makes it useless for everyone. But it’s not a feature that would otherwise be worth engineering.
__________________
2020 M550i xDrive (Champagne Quartz/Black)
2021 X7 40i M-Sport (Arctic Gray/Tartufo) RETIRED: 2018 540i Luxury Line (Dark Graphite/Canberra Beige) |
|
Appreciate
0
|
04-24-2024, 09:31 AM | #40 |
Brigadier General
5682
Rep 4,624
Posts
Drives: BMW M550i xDrive (2020)
Join Date: Jan 2022
Location: West TN
|
I do! But you can’t on later models. Our X7 won’t turn it off unless it’s in Sport mode
__________________
2020 M550i xDrive (Champagne Quartz/Black)
2021 X7 40i M-Sport (Arctic Gray/Tartufo) RETIRED: 2018 540i Luxury Line (Dark Graphite/Canberra Beige) |
Appreciate
0
|
04-24-2024, 09:35 AM | #41 |
Lieutenant
496
Rep 579
Posts |
|
Appreciate
0
|
04-24-2024, 09:50 AM | #42 |
Brigadier General
5682
Rep 4,624
Posts
Drives: BMW M550i xDrive (2020)
Join Date: Jan 2022
Location: West TN
|
Haha I do!
Although sport mode in a X7 40i isn’t exactly like in a G30
__________________
2020 M550i xDrive (Champagne Quartz/Black)
2021 X7 40i M-Sport (Arctic Gray/Tartufo) RETIRED: 2018 540i Luxury Line (Dark Graphite/Canberra Beige) |
Appreciate
0
|
04-24-2024, 10:17 AM | #43 | |
Major General
7415
Rep 6,806
Posts
Drives: '18 M550i|'21 X5|'03 540i
Join Date: Apr 2021
Location: Boston
iTrader: (1)
Garage List 2013 VW Tiguan [0.00]
2015 Infiniti QX60 [0.00] 2021 BMW X5 [0.00] 2003 BMW 540i [0.00] 2018 BMW M550 [10.00] |
Quote:
I agree with everything you said on ASS. It's amazing what some people latch onto and dismiss as acceptable wear and tear but complain about digital clusters as just something expensive that will break. Contrarians just to be contrarians.
__________________
2018 M550ix|Carbon Black|Dinan Modifications|2003 540i|Jet Black|M-Sport|2021 X5 Mineral White
Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi| |
|
Appreciate
1
NGT25682.00 |
04-24-2024, 10:23 AM | #44 | |
Brigadier General
5682
Rep 4,624
Posts
Drives: BMW M550i xDrive (2020)
Join Date: Jan 2022
Location: West TN
|
Quote:
The 2020 M50 we drove DID still have the off button. Which means I could could it out with Bimmercode…
__________________
2020 M550i xDrive (Champagne Quartz/Black)
2021 X7 40i M-Sport (Arctic Gray/Tartufo) RETIRED: 2018 540i Luxury Line (Dark Graphite/Canberra Beige) |
|
Appreciate
1
Joe-BMW337414.50 |
Post Reply |
Bookmarks |
|
|