09-18-2023, 10:20 PM | #23 | |
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You are changing ~1% of the weight of the car, or the equivalent of 6 gallons of gasoline. It will affect the handling as much as the difference between a full tank and a half tank? Can you tell the difference as you burn gas? If you really want to fine tune the handling, just varying the tire pressures front to hear, will have a much greater impact on balance. And using (trail)braking and throttle at the right time will have a greater impact still. 911s with 40F/60R can understeer, and Civic Type R with 60F/40R can oversteer. Don't listen to people bitching that car X understeers. They simply just want clicks or can't drive or both.
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G87 M2 BSM On Order
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09-18-2023, 10:25 PM | #24 |
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tom @ eas Is there any advantage to choose H8 over H7? I'd rather have a bit more storage room for a tire repair kit or such in the remaining space.
thanks for the awesome post. I'm ordering one as soon as I'm near breaking service.
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G87 M2 BSM On Order
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tom @ eas8263.50 |
09-18-2023, 10:26 PM | #25 | |
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09-18-2023, 10:26 PM | #26 |
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Somewhere in Germany there’s an engineer laughing at the internet thinking “people are arguing if an M2 will understeer or oversteer if they have a bag of groceries in the trunk or if they remove that bag later”.
C’mon guys… |
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09-18-2023, 10:30 PM | #27 | |
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09-18-2023, 10:34 PM | #28 | |
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09-18-2023, 10:36 PM | #29 | |
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https://europeanautosource.com/produ...ithium-battery These G87s have a pretty extensive network to sustain than to just throw the smallest battery that can fit and hope for the best. Not really, we lucked out on this one with BMW giving us dual mounting options.
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09-18-2023, 10:38 PM | #30 | |
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I’d take the largest I can get. |
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09-18-2023, 10:44 PM | #33 | |
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Again, two trains of thought/discussion here. There are those looking to balance the weight for best handling on a road race track and there are those looking for fastest launch (60 foot times) and pulls to 1/8 mi or stop light to stop light. Many concerned with overall weight loss (shedding pounds wherever you can) are driving in terms of drag/street racing (whether actually street racing or power launching/accelerating off the line going straight). In terms of the latter, yes, weight makes a difference including but not limited to battery shedding 40 pounds, lesser amount of gas in the tank or other weight loss in general. Yes, you will launch and accelerate off the line faster with 1/8 - 1/4 tank of gas vs a full tank of gas. You want to go run at a 1/8mi or 1/4mi drag strip, you dont go in with a full tank or anywhere near it. You want to run just enough gas in the tank for the number of runs you plan on doing. |
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09-18-2023, 10:48 PM | #34 | |
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AG's Battery Tracker is also a good alternative for those that do not drive often or have actual seasons (unlike us in SoCal @ 70-80F every day) to check battery voltage on your phone as well as monitor the last 30 days at a glance. For long term storage, you can even set reminders on your phone to check in. I even use one of these on my motorcycle for convenience.
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09-18-2023, 10:50 PM | #35 |
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Working on it. G80/G82 platform is much more complicated.
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09-18-2023, 11:17 PM | #36 | |
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G87 M2 BSM On Order
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09-18-2023, 11:20 PM | #37 | |
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09-19-2023, 12:09 AM | #38 |
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Couple questions, I only see F87 M2 as on option on Bimmercode, did you use that to code? Some of us used Bimmercode to change some things and we used 3 Series/M3 G20 G80 option to do so.
Does a battery tender work on this type of battery? Might be putting my car in storage for a month or 2 depending on how bad winter is here in NY, another option would be to swap the OEM battery back in the car when its going to be sitting for long periods or out in below freezing temperatures. Also, surprised to hear you say G80/G82 platform is much more complicated than the G87. I thought they were very closely related. |
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09-19-2023, 03:32 AM | #39 |
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Based on the info it certainly appears AG has done their homework. I own several of their products for my motorcycles and happy with them. But when I need a new battery for my BMW I’ll likely have a dealer bolt one in, code it and be done with it.
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09-19-2023, 05:51 AM | #40 | |
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As for Porsche you're only talking about the 911 and if you're going to be severely in unbalanced rear engine is the way to go. Weight reduction of this Li battery is used in advertising the product so if weight distribution doesn't matter than there's no reason to buy this Li battery.
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09-19-2023, 06:00 AM | #41 | |
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09-19-2023, 06:38 AM | #42 | ||
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(yes I know the carbon roof also looks better and offers more headroom) And folks talk about wheel swapping to save 20-25 pounds. That set me back $5k (827M wheel), though I suppose I have an extra set of wheels I can sell. |
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09-19-2023, 08:17 AM | #43 |
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I'm safe in assuming these batteries are not compatible in vehicles that have AGM batteries as the only option? I have a Volvo V60 Polestar and this would be ideal: Unlike in a BMW where the battery is low and in the back, the Volvo battery is pretty much above the engine, above the front wheels. Losing 40lbs there would be significant.
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09-19-2023, 11:51 AM | #44 |
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M2 auto is listed as 52.1/47.9. Removing 40 lbs. from the rear would change it to 53.1/46.9. Remember that fuel load can vary the rear weight by as much as 80 lbs.
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