09-07-2023, 09:41 AM | #1 |
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0-60 in the 40i LCI
Ive seen a bunch of threads asking for this but I did a launch last night (car has 1500 miles now) with 1/4 tank of gas and managed a 4.4 to 60.
I'm sure theres a +/- .1 second margin of error here. I just recorded it on my phone and looked at the footage length time when the car's speedo read 0 and then 60. Nevertheless, the "butt test" told me it was a 4.5 second car and this basically confirmed it. Not that any of this matters in an SUV but its impressive that the base engine is so capable when driving gets a little more "spirited" |
09-07-2023, 11:36 AM | #4 |
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Yeah, but not all that surprising--seems like BMW keeps getting more conservative on the advertised acceleration.
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09-07-2023, 12:42 PM | #5 | |
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4.4 seconds with your 40i is very strong and could even better on a 40* day. I see an X7 M50i in your sig. Car and Driver got a 3.8 second 0-60 in their test of that vehicle which is bonkers for a near 6,000 lb. faily hauler. I'm looking forward to some published auto press professional tests for the the M60i which feels to me like mid 3s capable vehicle. I doubt if many guys will be drag racing any of these but is cool to know just what they are capable of. These are fun times for sure. Last edited by cobramite; 09-07-2023 at 12:49 PM.. |
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09-07-2023, 01:27 PM | #6 |
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09-07-2023, 02:36 PM | #7 | |
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I know my x7 M50i does it in the low 4s and this doesn’t feel far off. The surge of power after 60mph in the x7 is definitely different but up to 60 mph the 40i LCI has got the goods. |
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09-07-2023, 03:43 PM | #8 | |
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My suspicion is this way it avoids arguments about their vehicle vs EPA mileage claims. |
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09-07-2023, 04:16 PM | #9 | |
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2023 BMW X7 M60i Vehicle Type: front-engine, all-wheel-drive, 6-passenger, 4-door wagon DIMENSIONS Wheelbase: 122.2 in Length: 203.6 in Width: 78.7 in Height: 72.2 in Passenger Volume, F/M/R: 58/50/34 ft3 Cargo Volume: 12 ft3 Curb Weight: 5838 lb C/D TEST RESULTS 60 mph: 3.8 sec 100 mph: 9.8 sec 1/4-Mile: 12.3 sec @ 111 mph 120 mph: 14.6 sec Results above omit 1-ft rollout of 0.2 sec. Rolling Start, 5–60 mph: 4.9 sec Top Gear, 30–50 mph: 2.8 sec Top Gear, 50–70 mph: 3.1 sec |
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09-08-2023, 11:29 AM | #10 |
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I've "verified" my 45e speedometer to read 1mph faster than indicated at 60mph--using GPS and those construction radar signs.
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09-08-2023, 12:10 PM | #11 |
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I have Racebox timing equipment that will give me accurate results but haven’t had the right conditions to test. I did try a 0 to 60 run about a week ago but it was 97° outside and slightly upwards slope… just stomping on it from a green light yielded a 5.6 second 0 to 60 (5.3 corrected for upwards slope) which is slower than spec. In my experience, temperature near or over 100° will greatly impact acceleration on the B58.
Also, comparing to the B58 in my M340i, there is a noticeable turbo lag when throttling it from a stop… the engines feel very similar in most situations but throttle response is more delayed in the B58TU2 which obviously impacts 0-60. So obviously you would want to brake boost or use launch control to get the best time… maybe if I cools off I can test again this weekend and report back. |
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09-08-2023, 12:19 PM | #12 | |
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B58 in 340 also makes more power than B58 in Pre LCI 40i. If BMW make s TU2 with M340 exhaust configuration, I bet thing will be even better.
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09-08-2023, 01:09 PM | #13 |
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BMW is notorious for underrating their power and performance numbers so that, presumably, automotive journalists and reviewers are wowed by the independent testing that beats the manufacturers quoted numbers.
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09-08-2023, 01:52 PM | #14 | |
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Based on just my perception (which might be flawed but no way to actually time it), I would say the turbo lag on my LCI B58TU2 is at least .5 second but could even be closer to 1 second. I mean, there's definitely an observable pause before the turbo spools and the power rushes in. The turbo lag on the M340i B58B30O1 is nearly non-existent. Maybe .10 to .25 seconds, but it basically goes full power the instant you stab the throttle. I had read the reason BMW keeps with the 2-port manifold design in the non-performance version of the B58 is because of efficiency... the engine gets up to operating temperature much faster with this restricted flow, which I can confirm. In my experience so far, the TU2 warms up in just a minute with slight feathering of the throttle as I exit my neighborhood. Sometimes it reaches temperature in the few minutes I am idling in the garage before I leave! The M340i (B58B30O1) takes way longer to warm up... you have to get out there and drive it for at least a mile. |
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09-08-2023, 03:54 PM | #15 | |
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09-11-2023, 09:26 AM | #16 | |
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09-11-2023, 12:52 PM | #17 | |
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09-11-2023, 01:26 PM | #18 | |
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Because I'm so acclimated to the throttle response of the M340i, just the other day I accidentally ran a red light in the X5 in comfort mode thinking the throttle/turbo would react fast enough to clear the intersection before it turned red... but the turbo delay was real and when the full power did kick in, there's just too much weight to push it forward at the same rapid pace. So now I don't even try to drive fast in comfort mode.... doesn't seem to be the point of this car anyways. I think the sport modes are more for when you need to get through a pocket of slow traffic, or you're a few miles from home and your wife is yelling at you because she has to take a leak. |
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09-11-2023, 04:01 PM | #20 | |
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09-11-2023, 05:40 PM | #21 |
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I am curious how it would feel vs my x7. Would be interesting to drive back to back. I would have done it but couldn’t get air suspension and DHP and that combo is pretty phenomenal for playing dual personality roles.
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09-11-2023, 07:31 PM | #22 | |
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Probably for 2 reasons, more HP and the mild hybrid which throws in 147 lb ft of torque when the computer feels it is needed. M50i and M60i are both very strong players indeed and really nice to drive. |
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