09-04-2019, 04:11 PM | #1 |
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Reliability
Before I start please don't flame me as I am unfortunately afflicted with the "paranoia" gene.
A little background first, I'm coming from a 1M and currently drive a 128, bought the wife an M2 (2018 LCI) and love it. As we use these cars as daily drivers I'm contemplating buying either a 2018 LCI or M2C to replace the 128 for myself (no kids, have done the 911s and for my use simply not cost effective). My research indicates the OG M2 is quite reliable overall. I would like opinions on the reliability of the S55 with respect to spun crank hub and risks of the oil cooler location. Both of the above kinda bother me so looking for owner experience with any of these two potential problems. Thanks in advance and please be gentle. |
09-04-2019, 04:23 PM | #2 |
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09-07-2019, 06:23 PM | #4 |
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This.
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Wife's Car: 2020 X4M Competition, Alpine White on Black Alcantara and Biege
Current Car: 2018 F80 M3CS, SMB, DCT, ZEC, MPE Recently Departed: 2020 F87 M2C, LBB, ZEC, 6MT (Euro Delivery Aug. 29, 2019, totaled by an idiot in a Camry who then ran from the scene) Wife's Prior Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017) |
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09-07-2019, 09:51 PM | #5 |
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It does appear that there's a slight reliability tradeoff to be paid for the extra power of the S55. Does seem that there's been more than a few failures and it's simply more complex overall with the oil cooler location as well as the liquid to air intercooler. Nothing alarming or widespread but the N55 stock is pretty reliable which is why the M2 has a solid reputation for reliability.
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09-08-2019, 05:56 AM | #7 | |
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I will test drive an M2C again (more extensively) and then hop back into my wife's to decide if the extra performance (for my needs) is worth the extra coin and potential reliability risks (even though they sound low). |
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09-11-2019, 09:35 AM | #10 |
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Until it doesn't, because you know, it expires...?
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Wife's Car: 2020 X4M Competition, Alpine White on Black Alcantara and Biege
Current Car: 2018 F80 M3CS, SMB, DCT, ZEC, MPE Recently Departed: 2020 F87 M2C, LBB, ZEC, 6MT (Euro Delivery Aug. 29, 2019, totaled by an idiot in a Camry who then ran from the scene) Wife's Prior Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017) |
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09-11-2019, 10:38 AM | #11 | ||
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spun crank hub has an aftermarket solution as well. but like others have pointed out, its unlikely to happen on a stock setup, and if it does it will most likely happen during your warranty period and warranty covers it. you are still statistically unlikely to experience this though. of all the problems being reported for the M2C I've experienced none of them @ 8k miles of driving it. Hope that helps! |
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09-11-2019, 11:04 AM | #12 | |
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Then of course there's the "after warranty" issue if you plan on keeping long term. |
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09-11-2019, 11:07 AM | #13 | |
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The IND after market cage is better than stock but will not stop small rocks at speed puncturing the cooler which is beyond delicate. I wonder how many have gotten the aftermarket cage... |
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09-11-2019, 06:35 PM | #14 | ||||
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09-11-2019, 09:25 PM | #15 | ||
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Wife's Car: 2020 X4M Competition, Alpine White on Black Alcantara and Biege
Current Car: 2018 F80 M3CS, SMB, DCT, ZEC, MPE Recently Departed: 2020 F87 M2C, LBB, ZEC, 6MT (Euro Delivery Aug. 29, 2019, totaled by an idiot in a Camry who then ran from the scene) Wife's Prior Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017) |
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09-12-2019, 12:25 PM | #16 |
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some s55 owners had near scares with hydro lock with leakying intercoolers. the fix is to get a csf intercooler. leaky air to air system...you just loose boost.
n55 is similar to that old GM joke where BMW made the n55 engine for so long that its reliable. the n55 is bit more reliable with the air to air system versus the air to water system of the s55. air to water systems are more efficient but more things can go wrong and air to air systems recover from heat soak more quickly. also keep in mind the n55 was mass produced so maintence parts will probably be cheaper and more plentiful i was in a similar sitiuation as you...i decided to get a lightly used OG M2 with only 5k miles for 43k because i was ok with the lower power and i thought it was a simplier more reliable system at a cheaper price. i was ok with the power of just FBO....if you want 1000whp i would go with the s55...its a better platform to start off with for that goal. |
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09-12-2019, 09:21 PM | #17 | |
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09-13-2019, 11:38 AM | #18 | |
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There are other nice upgrades with the m2c, but I feel the cooling is the big one as I feel the n55 m2 on a spirited drive to just feel the power disappear rather quickly as the car heats up. As far as reliability I think the s55 is good when it comes to S designated M engines. The n55 in the m2 even better, but obviously it's less advanced in a number of ways. |
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09-13-2019, 11:49 AM | #19 | |
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you can buy bigger heat exchangers or add more pumps but it starts getting expensive really fast compared to just buying a bigger FMIC in a air to air system. its one of the reasons why most of the 2000whp-3000whp cars you see in half mile racing are air to air systems, also the quicker heat soak recovery. my canyon runs are at 11k ft elev...i've boiled coolant in air to water systems just from canyon runs due to high heat and low air density. Last edited by TemjinX2; 09-13-2019 at 11:56 AM.. |
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09-17-2019, 02:40 PM | #20 |
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Really? I've taken my wife's out repeatedly for extensive "spirited" drives and never felt power quickly disappear...
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09-17-2019, 03:25 PM | #21 |
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