Official Component Weights & Weight Reduction Thread
 

Hi Guys,
I'd like to start an official weight reduction thread. I put it in this section because I figured most people interested in weight reduction were going to be those tracking their car. If the mods deem it more appropriate elsewhere, by all means please move it.

I'd like to break it up by vehicle area, and hopefully come back and consolidate the data occasionally so it's all in one place. I've broken it up along the same lines as the forum is segmented. I'm thinking we can collect all OEM data here, as well as weights for aftermarket parts. That way people can quickly reference it to make decisions when making modifications, without having to dig all over the place in separate areas of the forum.

I'll start it off with some data we've gathered on the OEM components. I have more on the way as we pull our project car BRZ apart. I took all weights on one of our postal scales, and have included photo validation where possible. I'd encourage everyone else to do the same to prevent discrepancies and arguments. Let me know what you guys think. Thanks.:thumbsup:

Complete Car
OEM BRZ Premium 6MT, full tank of gas, as delivered from dealership= 2,750 lbs.
http://img708.imageshack.us/img708/6...lcarweight.jpg

Wheels/Tires
OEM 17" wheel & tire combo= 41.4 lbs.
http://img838.imageshack.us/img838/1...eelandtire.jpg

OEM Lug nuts (5 pieces, or one wheel set)= 0.2 lbs.
http://img26.imageshack.us/img26/777/lugnutsv.jpg

Brakes
OEM front Brake pads= 1.8 lbs.
http://img262.imageshack.us/img262/6052/frpadsf.jpg

OEM front brake dust shield and three bolts= 0.4 lbs.
http://img193.imageshack.us/img193/4...ckingplate.jpg

OEM front brake disc= 17.0 lbs.
http://img31.imageshack.us/img31/1593/frdisc.jpg

OEM front brake caliper bracket= 3.8 lbs.
http://img407.imageshack.us/img407/1513/caliperbrkt.jpg

OEM Front Brake Caliper= 7.8 lbs.
http://img259.imageshack.us/img259/2357/frcaliper.jpg

OEM Rear brake caliper= 2.8 lbs.
http://img72.imageshack.us/img72/6135/rrcaliper.jpg

OEM rear brake caliper bracket= 3.0 lbs.
http://img831.imageshack.us/img831/8943/rrcalbrkt.jpg

OEM Rear brake disc= 13.2 lbs.
http://img856.imageshack.us/img856/4920/rrdisc.jpg

OEM rear brake pads= 0.8 lbs.
http://img811.imageshack.us/img811/7494/rrpads.jpg

Suspension and Chassis


Engine, Exhaust, Drivetrain


Other under hood
OEM battery= 29.6 lbs.
http://img839.imageshack.us/img839/3...attonscale.jpg

OEM battery tie-down= 0.4 lbs.
http://img525.imageshack.us/img525/2599/batttiedown.jpg

Super B 10P Lithium-Ion Battery= 3.9 lbs.
http://img839.imageshack.us/img839/5109/superb03.jpg

Interior

Driver Seat= 43.6 lbs.
http://img40.imageshack.us/img40/967/drseat.jpg

Passenger Seat= 39.2 lbs.
http://img269.imageshack.us/img269/7585/psseat.jpg
Rear seat bases (2)= 6.2 lbs.
http://img135.imageshack.us/img135/4651/rrseatbases.jpg

Rear seat back (1-piece)= 15.0 lbs.
http://img651.imageshack.us/img651/6348/rrseatback.jpg

Rear side plastic panels= 3.0 lbs. (driver and passenger are same)
http://img21.imageshack.us/img21/6567/rrsidepanel.jpg

Front floor mat= 1.2 lbs.
http://img10.imageshack.us/img10/8385/frfloormat.jpg

Rear floor mat= 0.4 lbs.
http://img196.imageshack.us/img196/2593/rrfloormat.jpg

Cup holder insert= 0.4 lbs.
http://img844.imageshack.us/img844/5378/cupholder.jpg

B-pillar plastic (covers seat belt attachment)= 0.4 lbs.
http://img834.imageshack.us/img834/7...larplastic.jpg


Exterior, body panels, lighting
OEM Front plastic fender liner= 1.2 lbs.
http://img85.imageshack.us/img85/6141/fenderliner.jpg

OEM front driving LED lights= 0.2 lbs.
http://img59.imageshack.us/img59/8689/drlp.jpg

Miscellaneous
OEM spare tire with liner foam= 25.8 lbs.
http://img825.imageshack.us/img825/3160/sparetire.jpg

OEM trunk tools, jack, tow hook= 5.8 lbs.
http://img862.imageshack.us/img862/8830/jacktools.jpg

OEM trunk rug/liner mat= 2.4 lbs.

Owner's Manual= 2.8 lbs.
http://img600.imageshack.us/img600/4691/manualb.jpg

OEM front license plate bracket and hardware= 0.4 lbs.
http://img265.imageshack.us/img265/3208/frplatebrkt.jpg

I love you! lol. Ill be spending a lot of time here. i plan on ditching a lot of the fat once i purchase mine!!!! great job keep it coming!!!!!

Shit, man. You're not going to have much of a car left at this rate. :lol:

Excellent....Great WORK....with the Stock Wheel/tire setup @ 41.x lbs...my 17x9 with 245's ..are 45lbs...I can live with that..:)

Bill

I will be able to add to this considerably myself today... :) as there will be some things I will be doing to the car...:evil:

Bill

Great thread. We found similar results. Removing jack, tools, spare tire, rear seat back, rear seat bases, rear trunk mat & pass floor mat dropped 70 lbs.

The Good news is ... mine weighs the same as yours... :)
https://sphotos-a.xx.fbcdn.net/hphot...14984417_n.jpg

https://fbcdn-sphotos-a.akamaihd.net...14984417_n.jpg

mine on the scales weight 2669 with less than a quarter tank of gas... no trunk Junk...and my new wheels/tire combo..

Bill

good work,
light weight battery and spare removal are an easy practical start for an almost 30kg drop. half way to a noticeable gain, i.e. a passenger..

The below Comment is just an observation, not directed towards any person or groups of persons.

I've always found it humorous when you get someone worried about shaving every last ounce from a vehicle but they don't have any issue with ordering the Super Sized fries with an Extra large shake when they go out for their mid-morning snack.

Point of example: Back when I first got into AutoX'ing my xA there was a guy who swapped a bunch of smaller items (Like the stock stereo) to save about 4 LBS. He proceeded to tell us that if we didn't do likewise we were putting ourselves at a disadvantage because our vehicles weighed more. Meanwhile this guy must have weighed at least 250 lbs and ate like a ravenous goat.

My point being yes, weight savings is a good thing, but you have to look at it as a % of the vehicles running weight with driver. If you weigh 250 lbs removing 4lbs is not going to have as much of an effect as the same weight reduction for someone who weighs 150 lbs. Or to quote someone else in that thread "You would shave more weight by going on a diet than getting rid of your Stock Headunit"

Anyways crimespree's comment about a "noticeable gain" made me remember that thread.

Good to verify our scale is reading at least somewhat properly!

Nice. Definitely post up all your specifics. Thanks!

We dropped 25 lbs. with our lightweight lithium-ion battery. We're finishing up a custom mount for it now. I'll add a pic and weight to my pics above. Race buckets are going to be another very nice reduction. I weighed an old Sparco Roadster seat that I had in my Z06...weighed in at 16 lbs. for the fiberglass version. We're making some custom lightweight aluminum seat rails that will only be a few pounds. Overall, a 20lb. drop in seat weight (per side) seems likely...so that's another 40 lbs. that can be shed.

It shouldn't be a big problem to get down into the 2550 lbs. range without ripping the car to shreds. That's about what my '98 Integra Type R weighed, and that car had very similar HP. These cars are going to be very lively at that fighting weight, even on a stock (and reliable) engine. Therein lies the beauty. I keep telling myself that this is going to be the RWD Type R I always wanted, or what I wish my NA Miata was...a particularly nice balance of power and weight. :D

big props to JRitt for this amazing thread, i can see the parts and proof of the weight claims, really a master piece of information if you take your 2751lbs number for a stock full tank of gas you can achieve 2550 or lower pretty easily and have a blast with it at that weight this really has solidified my desicion on getting this car i'm eagerly waiting from the call from my local dealer to pick it up i can't wait...

i know this car was no designed to drag and I actually don't visit the drag strip much, but i can see how i can have a good night with some decent times at one with just some simple weight reduction and just run with 1/4 tank of gas and not even have any engine modifications

Amazing. Made it a whole lot easier for the rest of the guys on forum. :thumbsup:

Good work!!

thats....a ......$450.......Battery.....:bow:

Very well done with all the pics and stuff! Big up!!!

Awesome data, much appreciated. Glad to see so much room for improvement in rotational mass domain.

Awesome stuff!

*Any chance you know the weight of just the stock wheel?

Thanks guys! I'm glad it is so helpful.

It ain't cheap, but it knocks 25 lbs. off the nose in 5 minutes, lowers the center of gravity, and improves front to rear weight balance. There's not much else on the car that can do that so easily! We're almost done with our custom mount for it. It's going to be a slick, lightweight little aluminum unit.:D

I doubt we'll be pulling the tires anytime soon...at least not until we shred the stock tires. We'll be using aftermarket wheels/tires. Sorry!

Great start to a weight savings thread.

As a side note, it's rather interesting that it's a BRZ being the candidate. If you are going to start removing and replacing stuff (such as the seats) anyway, why not just buy the cheaper FR-S? What makes the BRZ more valuable over the FR-S as some would say, would be that extra stuff that you are gutting out.

I noticed your sig..

Why would you go from a S2K or a TT to a speed6?:bonk:

I remember that the Gazoo 86 that raced on the nurburgring weighed ~2400 lbs...

:word: Really eye opening to see how much simple things like the cupholders and rear mats weigh. Guess I'm gonna be shedding at least 1.2 lbs. tonight. :thumbsup:

Thanks JRitt! :thanks:

Thanks very helpfull.

This thread is AWESOME. It's so cool that we have so many people willing to gather all the data on the cars that we need! Thanks for doing this!

I dont know what else you were thinking about weighing but so far this is all very good information! Keep it up!

Thanks for posting :)

110 lbs of seats? Sweet Jeebus.

Thanks! I like this stuff. What about the Airbags, steel trunk, drive shaft, and OEM exhaust pieces?

So when will we start seeing aftermarket carbon fibre bonnet and boots on offer to compare??? That will be a decent weight saver..

The many thanks r becoming spam now but u r a champion for putting up this thread..

Ill be keeping close watch... Subscribed:popcorn:

True dat.. I 'only' have a Deka going in mine..;)

https://fbcdn-sphotos-a.akamaihd.net...79897339_n.jpg

The 17 inch oem tire is listed on Tire Rack at 20 pounds. If the stock wheel/tire combo is 41.4 pounds, then we're looking at approximately 21.4 pound wheels!

Stock wheel = 21.4 pounds?

Can anyone confirm...that is something than can be improved upon tremendously...

According to Jeff, stock catback is 38.4lbs
Source: http://www.ft86club.com/forums/showp...85&postcount=1

Stock muffler is 26.05
http://blog.perrinperformance.com/wp...t1-550x410.jpg
Midpipe is 12.40
http://blog.perrinperformance.com/wp...ht-504x550.jpg
from here:
http://blog.perrinperformance.com/2013-brz-exposed/

Stock front pipe is 12.2lbs
Source: http://www.ft86club.com/forums/showp...93&postcount=1

This thread should by stickied.

Hope to see more weigh ins of the car and thanks for posting JRitt. :thumbsup: :popcorn:

I would have expected the seats to have been lighter. Damn.

Good stuff so far guys.

21.4 x 4 =85.6 almost 86 lbs... Damn! So close

Has anyone managed to weigh the stock suspension yet?
My set of RS*R coilovers has a shipping weight of approx 30kg including packaging. Just curious what OEM weight is. I'll only be swapping mine out in about 2 weeks so I can post if no one else does. In the mean time it'd be much appreciated if someone beats me to it ;)

Throw some wheel weights on ;)