08-27-2020, 12:49 AM | #89 |
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I have a X3MC right now and I can't stand the lag. It's only at the start from a dead stop but it's horrible. Once going the car has insane power but they need to figure out how to launch it better without having to use launch control every time. It really defeats a lot of the benefits that come with AWD if there is no power for the first second...
Greatest example is look at CD 0-60 vs 5-60 time The 4.6-4.7 second 5-60 is what you get at a stop light. It's sad, I think my Old M3 would take it. But with launch control it's 3.3. Insane difference. Sure the M3 might be 2.9-3.0 with launch control but I bet it's 4.2 without it. Which means not much improvement over current M3 for stop light starts. I realize that's not everything but it is something that will be in your face every day you drive it... For this reason when my lease is up in 2 years I may go to something else. Would be tough dealing with the lag for another 3 years. |
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08-27-2020, 04:11 AM | #90 | |
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I chose to ignore how the already owner defend their purchase, because I understand exactly why they feel the way they do. No point in making them unhappy in a RE: format. I've been doing the X3MC for everything from street driving, high speed, BMW local road course (where I even did hours of hours drifting in X3MC. I can post a video of that, but that'd be when I start a stand-alone thread for lag discussion). One scenario in which I'm particularly frustrated with the X3MC is, when cursing at speed, let's say cruising at 2k5 in sport mode, you floor it and get instantly a few gears drop to 4k5-5k. You'd think now full power is all yours, well, NO, not remotely true. Even at 4k5+, the turbo still lags and need one second or two for spool up. What's even more ridiculous, the build up from 4k5 is so slow that you don't even get full power at fuel cutoff! Then it upshifts, dropping back to 5k, now the full power. Think about it, pedal to metal, kick down, and full power is not available until the next gear... I'm telling everyone yes the X3MC is that laggy. Unless you're some kind of a crazy driver, winding up RPM in sport all the time, you'll be dealing with a very sluggish car most of time. Quite a few owners are doing too many high speed to stay in off boost to really bother. No mention track junkies need nothing under 3k5. There is some hope for the M3/4 though: 1) The Alpina B3 is using the same S58 and they seem to find more low down torque, assuming they didn't custom spec the turbo. 2) Reports say M3/4 have 50NM (37lbft) of peak torque than the SUV counterpart, there're probably some improvement work already done in it. Sean
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08-27-2020, 04:52 AM | #91 | ||
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08-28-2020, 11:46 AM | #92 | |
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in fact the grill is growing on me because its a "shark nose" and I have a thing for sharks... imagine if they just gave this thing a hybrid setup, electrified AWD, could have had an insane car (550hp, 0-60 in 2.6 with no lag). I think thats what Mercedes is thinking for next AMG (will find out in the next year I guess). |
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08-28-2020, 12:27 PM | #93 | |
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Both are good reasons to expect acceleration lag to be significantly less and as a result the G8X to be an overall much quicker car. But if the gen2 MHEV then is added in a few years (M3 LCI maybe) it sure won’t hurt |
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08-28-2020, 03:34 PM | #94 | |
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Just like M5 and X5M share engines. Not sure about 800 lbs lighter. 450-500 more like it. Unless M3 with AWD will weigh 3500 lbs which I seriously doubt. |
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08-28-2020, 03:39 PM | #95 | |
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lemetier has a comment here that the S58 in the G8X is another revision than of what’s in the X3M and his information has been legit. Update, this is lemetier’s comment: “The S58 in the G8x is the 3rd variant (X3/4M Typ 1, Alpina Typ 2). It doesn't have the same characteristics as the other two. Additional variants will follow.” Last edited by solstice; 08-28-2020 at 03:45 PM.. |
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08-28-2020, 04:28 PM | #96 | ||
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08-28-2020, 05:22 PM | #97 | |||
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During the the X3M/X4M launch a few ppl who were at early M launch events noted that the bmw officials told them the suvs were tuned for suv driving expectations. (You will need to dig through that forum to read the specifics) Interpreted as softer off the line. Whether that is true or not we will find out, but the inside info referring to multiple versions certainly backs that up. |
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08-28-2020, 05:29 PM | #98 | ||||
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08-28-2020, 05:30 PM | #99 | |||||
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08-28-2020, 07:16 PM | #100 | |
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Thinking about it, I can’t come up with a single concern I have left. Except if that paid subscription garbage is coming. Last edited by solstice; 08-28-2020 at 07:24 PM.. |
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08-28-2020, 07:56 PM | #101 | |||
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Thats 50nm more than in the X3M/X4M so some type of change are done to the new S58. |
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08-28-2020, 08:16 PM | #102 | |
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But maybe the low end responsiveness is available to unlock already by simple ECU tuning. |
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08-28-2020, 09:04 PM | #103 | ||
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08-28-2020, 10:01 PM | #105 |
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08-28-2020, 10:19 PM | #106 |
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08-28-2020, 10:59 PM | #107 | |
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<silently praying for a wink from lemetier > |
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08-28-2020, 11:06 PM | #108 | |
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If anything, they can do some form of the anti lag system like they said they did with the S55. From my experience of tuning FI BMWs for years and current state of S58 tuning, ECU alone will not help lag much if any. As far as speculation goes, BMW people said in a couple occasions that the exact S58 found from X3/4M will be fitted to the G8X.
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08-30-2020, 01:10 PM | #109 | |
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08-30-2020, 03:15 PM | #110 |
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B12 Switchtronic, interesting comparison
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SCOTT26 "So as an admirer of the M5 and a potential customer of an M5 Touring. I would run naked around the streets of Garching if they were to offer one."
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