09-04-2021, 11:51 AM | #1 |
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why does I4 weight so much?
this is one huge reason I haven't ordered one yet.
Not just compared to Tesla, I know nicer interior materials weigh more, but what about compared to the Porsche Taycan? that thing is a lot bigger (6" longer) and weighs the same and you can't tell me BMW is using better materials than Porsche Porsche Taycan 4s (standard battery) is 4770 with a similar battery and 195.4" BMW is 4,880 lbs and 188" |
09-05-2021, 01:11 AM | #3 |
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It is pretty surprising that it weighs more than a 3 motor Model S Plaid, or a 7 series! I guess the only advantage would be in an accident with a lighter car.
Last edited by hotrod182; 09-05-2021 at 09:44 AM.. |
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09-05-2021, 08:38 AM | #4 |
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Motors do not weigh all that much, nether does the more premium interior. Like many others I am having trouble choosing. To me the negatives of the BMW is the weight, limited back seat headroom, and for right now not knowing what options are available and are included. Once the ordering guide is available for the USA, I'll decide. Tesla 3 and Y are the other options although I've been a BMW owner for over 20 years.
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09-05-2021, 10:27 PM | #5 | |
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Tesla is only interested in you to buy a car. After you’ve given them what they want, you drop off their radar. Issue with the car? Better work around them to get it fixed. E.g. no weekend appointments, no valet service, no loaner vehicle, etc. I wanted a Tesla so badly coming from three Cadillacs and an Audi and when I finally got one, after the honeymoon phase wore off, I realized how poorly built my Model 3 was and how unwilling Tesla was to helping me whatsoever that I ended my lease early to get into my BMW. They soured my feeling toward Tesla in just 1.5 years of driving a Model 3 after wanting a Tesla for so long. It’s truly a shame. But just wanted to give some perspective since you mention 20 years of driving BMWs…a Tesla is no BMW. It’s not even comparable to a Chevrolet honestly, as at least the door panels on a Chevy align.
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09-06-2021, 02:26 AM | #6 |
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Take a 4 series, drop off the engine and drivetrain. Add a battery and a couple of electric motors together with all the fat wiring. Replace some essential components such as AC and so.
Thats how you get this weight. And you probably can't even make all of that as lightweight as you could, because you want to go for some driving dynamics. You need to preserve the weight balance of the car, so you need to put some heavy components in the front where gas engine used to sit. And how to reduce it? First rework the chassis, design and materials. Then the battery. Then make everything lighter, all the components, wire harnessses and everything. Reusing existing chassis and components makes this difficult. |
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09-06-2021, 09:35 AM | #7 | |
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09-06-2021, 10:55 AM | #8 |
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Pretty sure that's exactly what they did right down to including the floor pan tunnel for the driveshaft. At least they stuffed some batteries in that space! My understanding is the battery is used as a chassis stiffening component in the i4.
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09-06-2021, 11:02 AM | #9 | |
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My understanding on Tesla build quality, the very early ones were literally hand built, thus came out with few problems. Ramping to higher production rates yielded the worst build quality. Once they reach steady state it should start getting better. |
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09-07-2021, 07:57 PM | #10 | |
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But I would never buy a Tesla. 1. No leather! For $60K! My daughter's Chevy Bolt has leather. 2. I live in the SF Bay Area and everywhere you turn there is a Tesla 3. Their build quality sucks compared to a traditional car manufacturer. It's not a BMW build or even a Chevy build. Inconsistent panel gaps. Crappy paint. 4. Supply chain and repairs. I had a friend wait two months to get his window repaired when it got broken. 5. On a Model 3, everything done via the stupid screen in the middle. Did I mention on the Model 3, there is nothing in front of you and it requires you to look toward the middle? Pass. Pass. Pass. Waiting to configure my i4 M50.
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09-08-2021, 01:25 PM | #11 |
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Large rear hatchback weighs a lot. Look at the regular GGC 440i performance stats vs 340i and it's a bit 0.2s slower or so to 60.
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09-08-2021, 06:16 PM | #12 |
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i4 is heavier than Tesla, but having seen how BMW deals with weight, I'm hopeful that it will still drive like a classic sport saloon BMW. I mean, X5M for instance, is a proof for that.
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09-13-2021, 12:49 PM | #13 |
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Two words: bad design.
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09-13-2021, 04:48 PM | #14 |
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09-13-2021, 05:26 PM | #15 | |
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I did have a Model 3 on order early this year, but Tesla had no car for me when I needed one, so I test drove a G20 and bought one 2 days later. |
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09-13-2021, 08:10 PM | #16 |
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It’s actually pretty simple: the I4’s weight is a result of its designers’ and manufacturer’s inexperience with EV platforms.
The good (?) thing is that BMW isn’t alone in this - all of the legacy manufacturers’ current EV offerings are overweight compared to the state-of-the-art EV chassis on the market, and this has nothing to do with crashworthiness or luxury trappings. They’ll figure it out, eventually. Last edited by ZCD1; 09-13-2021 at 08:16 PM.. |
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09-14-2021, 01:39 AM | #17 | |
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Last edited by fsfikke; 09-14-2021 at 01:47 AM.. |
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09-14-2021, 07:57 AM | #18 | |
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Tesla would do much better as a car company to spend more time on build quality. You should try to avoid getting one built at the end of the quarter when they have their many production pushes. That along with the spartan interior of a $50K+ car and lack of apple car play has me looking at the i4. The poor service support of Tesla is another factor. The weight of the i4 is a minor issue. The i4 40 weights nearly 900 lbs more than my 335D, which was already a heavy car, similar in performance. With the weight being so low in the i4, BMW can easily make the car perform like a BMW. The driver will likely pay for that weight in tire wear and slightly less efficiency. |
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09-14-2021, 09:20 AM | #19 | |
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09-14-2021, 10:30 AM | #20 | |
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I think the 5 series has also moved to a "carbon core". THe 3 series does not use carbon fiber in the core.
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09-14-2021, 12:02 PM | #21 | |
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I would think 900lbs extra is a disadvantage in terms of range and operating cost. E.g. 900lbs less can squeeze extra 100 miles of range, and/or 4-5 miles/kWh instead of 3 miles. I am very interested in Tesla's 4680, at 5x density it can reduce battery by at least 50% and/or increase range by 2x. |
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09-14-2021, 12:10 PM | #22 | |
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Other manufacturers take the prudent route by building reinforced partitions around the battery for safety, at the expense of weight. It is true I4 also has the disadvantage of being shared chassis, but my guess is that the battery safety enclosures also add extra weights. |
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