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BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      11-26-2014, 09:47 AM   #1
Kizzu
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weight reduction tips anyone?

so, was considering some ways to reduce my 125i's weight as I think it's a bit too heavy compared to it's size. Anyone has ideas about what to do?
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      11-26-2014, 09:50 AM   #2
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How much do you weigh?

On a more serious note do the basics, removing the backseat is always a good place to start, that's good for 20 or 25 kg if I remember correctly.
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      11-26-2014, 10:01 AM   #3
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Quote:
Originally Posted by BrokenVert View Post
How much do you weigh?

On a more serious note do the basics, removing the backseat is always a good place to start, that's good for 20 or 25 kg if I remember correctly.
already lost 40kgs don't think I will loose more, at least not for now jokes apart I weigh 80 kgs which is 175pounds and I was thinking about removing the rear seats but that doesn't make a whole lot of difference.. I mean once more parts are replaced/removed yes it would stack up but by JUST removing them you won't see a noticeable change.
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      11-26-2014, 02:18 PM   #4
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Delete rear seats, titanium exhaust, lighweight battery, recaro PP seats, lightweight wheels, aluminum calipers, remove all the junk from the trunk. Thats without gutting the car and removing AC unit, heat core, air bags, carpeting, ect. Good luck.
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      11-26-2014, 02:31 PM   #5
Kizzu
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Quote:
Originally Posted by Groundpilot View Post
Delete rear seats, titanium exhaust, lighweight battery, recaro PP seats, lightweight wheels, aluminum calipers, remove all the junk from the trunk. Thats without gutting the car and removing AC unit, heat core, air bags, carpeting, ect. Good luck.
that was really usefull info ! thanks. got 335i calipers now, don't know if they are made out of aluminum though.

Last edited by Kizzu; 11-26-2014 at 03:12 PM.
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      11-26-2014, 02:41 PM   #6
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Quote:
Originally Posted by Kizzu View Post
so, was considering some ways to reduce my 125i's weight as I think it's a bit too heavy compared to it's size. Anyone has ideas about what to do?
There's a sticky over at m3post about the subject.
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      11-26-2014, 03:01 PM   #7
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Lightweight wheels, lightweight battery, headers without cats, fixed back seats.

I'm currently at 2981 lbs with Recaro SPGs, Muffler Delete, Lightweight Wheels
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      11-26-2014, 08:21 PM   #8
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Some more tips here
http://www.n54tech.com/forums/showthread.php?t=26696
It's a 135i but most of these still apply.
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      11-26-2014, 10:30 PM   #9
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Reduce unsprung weight first. Wheels and rotors are opportunities if weight is your objective. Some two piece rotors are out there that are significantly lighter than stock.
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      11-26-2014, 10:51 PM   #10
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Quote:
Originally Posted by Kizzu View Post
that was really usefull info ! thanks. got 335i calipers now, don't know if they are made out of aluminum though.
Here we go:
http://www.racingbrake.com/Big-Brake...t-p/2244-k.htm

Pricey, but its a huge upgrade in every way
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      11-27-2014, 12:41 AM   #11
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Quote:
weight reduction tips anyone?
Don't eat turkey or mashed potatoes. Exercise more, sit less.
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      11-27-2014, 06:27 AM   #12
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I searched for a carbon fiber panel to replace the sunroof glass but came up blank.
Would reduce weight in the most strategic place.
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      11-27-2014, 10:25 AM   #13
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Quote:
Originally Posted by gap View Post
I searched for a carbon fiber panel to replace the sunroof glass but came up blank.
Would reduce weight in the most strategic place.
Yeah, sadly no such thing yet for E9x/E8x chassis.
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      11-27-2014, 03:50 PM   #14
Kizzu
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thanks for all the feedback ! was going to start off by replacing my front brakes first as they have worn out. after that I will consider a set of lightweight wheels or a set of recaro's as mentioned earlier on
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      11-27-2014, 05:24 PM   #15
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Here is the best lightweight battery currently on the market-Voltphreaks Lithium Battery
Good discussion here:
http://www.m3post.com/forums/showthread.php?t=1052123
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      11-27-2014, 07:50 PM   #16
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Quote:
Originally Posted by gap View Post
I searched for a carbon fiber panel to replace the sunroof glass but came up blank.
Would reduce weight in the most strategic place.
Have a look in the thread I posted.
Terry used one made for the e90 he got off ebay.
Fit wasn't great but it worked with some trimming, expanding foam and silicone.
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      11-28-2014, 10:16 AM   #17
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Quote:
Originally Posted by Nugget View Post
Have a look in the thread I posted.
Terry used one made for the e90 he got off ebay.
Fit wasn't great but it worked with some trimming, expanding foam and silicone.
My car is just a highway car and I like being able to use the sunroof. Don't need the heavy glass panel but do want it to function. Must not be enough demand for one or one would be on the market.
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      12-04-2014, 02:18 AM   #18
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Lots of good suggestions. Easy to cross the line into "annoying" if it's your daily driver. Most reduction opportunities are in the rear half of the car. To keep in balance don't forget about the front...remove small engine bay components...cowl (~10lbs), BMS cabin filter (~4lbs), windshield washer fluid (~12lbs if you can stand the dash light), carbon fiber hood...the rear and sprung have already been covered.
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      12-04-2014, 02:15 PM   #19
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Quote:
Originally Posted by 1forI View Post
Lots of good suggestions. Easy to cross the line into "annoying" if it's your daily driver. Most reduction opportunities are in the rear half of the car. To keep in balance don't forget about the front...remove small engine bay components...cowl (~10lbs), BMS cabin filter (~4lbs), windshield washer fluid (~12lbs if you can stand the dash light), carbon fiber hood...the rear and sprung have already been covered.
didn't quite notice it but you're right, thanks
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      12-10-2014, 12:14 AM   #20
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http://www.motorsport24.de/motorspor...E82::1930.html



center console light weight
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      12-12-2014, 12:28 PM   #21
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axelback exhaust is good for 30-35 lbs, a muffler delete would get rid of most of that
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      12-12-2014, 12:54 PM   #22
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I believe I read that the Berk Race is 26 lbs lighter than stock axleback. That thing is a beast!
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