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BMW 3-Series (E90 E92) Forum
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Dump the 800 lb Gorilla (Weight Reduction)
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12-04-2007, 05:34 PM | #23 |
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Speaking of car weights, I had my 325i weighed when I was at Roebling Road a couple of months ago -
Just the car (no driver) - LF 799 RF 859 LR 847 RR 828 total weight - 3333 lbs Front - 49.74% Rear - 50.26% Left - 49.38% Right - 50.62% Just for reference, my car is completely stock, except that I've replaced the tires with Michelin PS2's (non-run flat). At the time of the weighing, I had most of a tank of gas, no floor mats, completely empty car, except my Continental emergency air pump was still in the trunk wrapped in a towel. The 325i may be down on power, but it's down on weight too, compared to other E90s that is. On the few occasions that we've had 335i's show up at our autocrosses, I've been at least two seconds quicker, but seat time probably made the biggest difference.
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Last edited by kevbh; 12-04-2007 at 07:23 PM.. |
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12-05-2007, 08:58 PM | #24 |
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Anyone mention airbags yet? I think the car has six of them (the four beams, steering wheel, passenger dash). I remember hearing somewhere that airbags and their deployment units are pretty heavy for their size, in general, although I've never handled one.
Let's say, on the heavy side, that they're ten pounds each. Removing the four beams would then be forty pounds off - essentially bringing your car back to 1990's safety. Dropping them all off, say for autocross, sixty pounds. ALL of this above the cars center of gravity. If the ten pound estimate of weight per is about right (again, I'm not positive), I think this would actually be noticeable in cornering at the extremes. Just a thought. I probably wouldn't do this myself: 1) Because I don't want the damn things blowing up in my face, 2) I don't know how to wire them to read still present and not give you a continual CEL, 3) accidents, especially with passengers. But, if it were easy to do/undo, I'd at least look into it for the pillars. |
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12-05-2007, 09:01 PM | #25 |
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Also, our 335i's have some heavy-duty foldable crush beams in the doors, don't they? If these don't serve a structural purpose for non-accident conditions, removing them would be another safety vs. performance trade-off for the track.
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12-08-2007, 04:16 AM | #26 |
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All I know is If I wanted to get a track car I'd have bought an Elise. I don't see the point of tearing your interior to pieces thats ridiculous.Why buy a BMW? CF hood/parts that replace something I can understand wheels or ligther pieces that replace something. Maybe even nice seats depending if they match but just gutting your car is retarded just trade it in and be done with it.It looks gross.
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12-08-2007, 04:45 AM | #27 | |
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12-09-2007, 12:24 AM | #28 | |
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EWWWWWWWW..it looks gross! boohoohoo Everyone has different priorities, I say do what you want, it's your car. Also, the feel of BMWs is a preference as well. And the 335 is very capable on the track, I don't see why it should stay away from it. Elises are great cars, but they need a bit more power, not to mention a 335 is a way better dual-purpose than an Elise. |
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12-10-2007, 01:57 AM | #29 |
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LOL, you're funny. I bought the 335 because I'm a college kid that wanted a fun practical car and I've always had BMW and always loved the BMW drive. I (unfortunately) got the sedan because it's practical. I (sort of fortunately) got xDrive because I live in Rochester (i.e. snowville). I got the 335 because when I heard BMW was putting parallel twin turbos on one of their already fantastic engines I think I wet myself. I went to my first track event in the 335 and was hooked. So my thinking is that if I can make my daily driver PERMANENTLY perform better than why not? Of course at this point the logical decision is to do things like...suspension, wheels, and sticky tires and such to have some fun at BMWCCA and keep daily driving nice, and get a light track car (read beater car) for NASA and the like.
shimshimhada, thanks for the info. I'll definitely play around to get something sorta kinda like that on track days :-P My girlfriend would kill me if my car ever looked like that when she was around though. Don, I think I'm looking at SSR Type C RS with Kumho Ecsta MX. I think I'll be able to use that setup as a track/summer setup to ease into track tires as I'm not sure if I'm perfectly comfortable putting myself on R comps just yet. I've recently gotten more serious about brewing beer at home and thus most of my money has been shifted from my car to my budding nano brewery Come spring (after 2 jobs) I'll have plenty of money to spend on tracking though, so wheels will come then. sflgator, I agree that it's harder to remove weight, but I'm a strong believer in starting with a strong foundation. I am in computational mathematics and even when programming I always do foundation (platform) first and then add power (efficiency). I'd rather have a light, well handling car with normal power (hell the engine is good enough already ) than a heavy, poor handling car with a ton of power. Once I am more comfortable with my platform (get rid of the slight boat feeling), then I'll add a nice piggyback, etc. I've actually stopped myself from buying downpipes like...two weeks ago. So I'll probably end up with at least those by next month or something :-P
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12-10-2007, 02:09 AM | #30 | |
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12-10-2007, 02:34 AM | #31 |
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[QUOTE=shimshimhada;1795131]Usually, the people who make posts like these are the ones who never track their cars (regardless of what it is) ever.
its funny how you assume that someone doesnt track their car because they think the 335 isnt a good track car, its a great car and could be better with upgraded suspension and so on. I myself have tracked many cars at willow springs mostly m3's set up for track use only. so dont make stupid assumptions about someone you dont know |
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12-10-2007, 03:10 AM | #32 | |
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I'll keep making assumptions, as long as I browse the far reaches of online forums. What else am I supposed to do? Find you in person and ask about your life story over some tea and crumpets? Oh wait, you live in Cali, I'm assuming you prefer boba? |
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12-10-2007, 03:27 AM | #33 | |
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one other thing i forgot to mention. Rule of thumb is When you are removing something to the front. you need to remove something in the rear also. SO the car have even distrubution wieght. so you wont flip your car on high speed ride. lol |
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12-10-2007, 03:28 AM | #34 | |
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i weighted my car with RFT is about 3530 lbs.. damn pig coupe weight 50/50 balance.. very nice weight distribution. |
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12-10-2007, 03:37 AM | #35 | |
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12-10-2007, 03:50 AM | #36 |
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hey guys can we keep things friendly in here, I really wanted this to be an informational thread and it seems we are slowly gaining at least a bit of ground in that respect. So please, no assumptions or retaliations or whatever....just....fat gorillas and how to remove them?
You know, I didn't even really think about it but say that DP+intake+FMIC+....CF bumper/hood maybe reduces front weight by 50 lbs total (probably a stretch there but what the hell). You are gaining power and saving weight so from a...how do I remove weight from the front perspective (after or while changing wheels of course), those are actually even more viable and even more important than I thought. I mean, I knew they did something weight wise, it just didn't click how much else they did. Great, those are #3 on my list after suspension and wheels. And that even sticks with my foundation obsession Maybe I'll actually be able to get my sedan to a 50/50 split :-P
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12-10-2007, 04:22 AM | #37 | |
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Maybe you have a hard time understanding the concept of internet forums and jokes involving boba. You can e-thug all you want, I'm not one to get antsy over a little personal reference. Back to the original topic, longodj, you can remove some more weight getting additional ltw suspension components as control arms. As for nonsusp frontal weight reduction, stuff like headers I imagine would help. |
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12-11-2007, 01:29 AM | #38 |
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Hmm I don't think anyone makes headers for the 335 yet? and Control Arms have just recently been released from what I heard but they're like...$3k. Good suggestions though! I'll edit OP
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12-11-2007, 04:58 AM | #39 |
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You can remove your foglights too for a few ounces.
I removed mine cause one of them cracked and I was too cheap to replace it, so I just removed both of them. You can also do a ltw flywheel and clutch. I think some aftermarket brake kits are lighter than stock, but I'm not sure. |
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12-11-2007, 06:58 AM | #40 | |
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12-11-2007, 08:48 AM | #41 |
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Sorry..the stock 335 does not handle great..it pushes really bad. Modified it does well...however, without getting some negative camber up front..you are only gonna go so far...so camber plates are a must to get the proper handling thru the corners on the track. I am only talking about track driving here...the stuff you do on freeway onramps and offramps is something totally different.
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12-11-2007, 11:07 AM | #42 | |
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You don't have to rationalize your decisions to a bunch of random people most of whom you will never meet. But if you feel the need to convince these people (and yourself), at least come up with a better reason than that. |
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12-11-2007, 02:55 PM | #43 | |
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My everything from the front seats up is intact, aside from the change of the driver's seat. And the trunk? There's actually more cargo room in there now than before. Hell, if anything, it's even more DD friendly! Although...there are no seat belts or headrests for rear passengers... |
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12-11-2007, 03:00 PM | #44 | |
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