SonnyakaPig

No worries. Thanks for the info.

GHAZAN

rear seat cushion, as in the part your *** is on or your back?

I am Jeff

All *** baby! lol Find something to pull out the rear seat cushion where the *** cushion meets the back.

C63fan

Really learn a lot about our car! TKS!

dodger63

This is very educational!

NS_C63

+1

NellyRod

Really interesting thread. These weight savings are amazing, but unless you track your car, is it really worth the $$$. Considering the price of some of these mods, probably not IMO.

How much do you guys think this would affect gas mileage?

Is there a light-weight battery available that would be good for a daily driver?

propain

If you break it down a lot of them are free weight savings...

Passenger Seat
Spare
Headrest
Cushions


124lb's without spending a dime.

Beyond that the Battery is a cheap solution to drop 45lb's so without hurting your wallet on the track day you can save 169lb's. You can drop .15 off your time for the price of this battery. Thats a good deal indeed.

Light weight for a DD? Why bother? You will probably only save about 10-20lb's at most. For a DD you wont feel the difference at all.


Great thread though... Thanks in whole to Dodger and Mthis and others who have discovered these tricks for us.


Fine, Jon cant drive... isn't Hagi Jon's weight or a little above? Let him drive! lol

superlubricity

Here are additional weights from some of my previous posts. I'll work on creating a sticky for all of this info so it is easy to find/reference.

Forgestar F14 Wheel (1200-lb rating, 18x8.5 ET46) = 18.08 lbs w/ Hardware*
Forgestar F14 Wheel (1200-lb rating, 18x9.5 ET55) = 20.51 lbs w/ Hardware*
*Hardware (TPMS, hub-centering ring and center cap) = 0.175 lbs

Nitto NT05 Tire 245/40-18 = 25.09 lbs
Nitto NT05 Tire 275/35-18 = 27.38 lbs

Front OEM Wheel (18x8 ET45) & Front OEM Tire (Pirelli PZero 235/40-18) w/ TPMS and 5,000 miles of use = 49.75 lbs
Rear OEM Wheel (18x9 ET54) & Rear Tire (Nitto NT555R 285/35-18) w/ TPMS and 400 miles of use = 51.77 lbs
Rear OEM Wheel (18x9 ET54) w/ TPMS = 26.00 lbs

Front Forgestar F14 Wheel (1200-lb rating, 18x8.5 ET46) & Front Tire (Nitto NT05 245/40-18) w/ TPMS and 25 miles of use = 41.52 lbs
Rear Forgestar F14 Wheel (1200-lb rating, 18x9.5 ET55) & Rear Tire (Nitto NT05 275/35-18) w/ TPMS and 25 miles of use = 48.27 lbs
Rear Forgestar F14 Wheel (1520-lb rating, 18x9.5 ET54) & Rear Tire (Michelin PS2 275/35-18) w/ TPMS and 0 miles of use = 48.04 lbs

Spare tire, Jack, Styrofoam Pad and First Aid Kit = 39.50 lbs
Rear Headrests (All 3 Combined) = 4.51 lbs

Front OEM Brake Rotor (1-pc, Non PP) = 35.56 lbs
Front OEM Brake Rotor (2-pc, P30) = 29.58 lbs
Front evosport Brake Rotor (2-pc) = 23.33 lbs

OEM Crank Pulley = 6.3 lbs
evosport Crank Pulley = 4.3 lbs

mthis

if i were jon's weight i would have hit 10's at atco lmao, im not that light fellas, if 180 is light then you fat a$$ need to get on diets

blackbenzz

I am Jeff

Maybe you need to take that huge **** and shyt before you get on the strip. You might save 2-4 pounds easy. lol

SonnyakaPig

I, for one, will be very appreciative of this topic becoming a sticky. Thanks for being willing to organize everything into a nice thread.

dodger63

Hey hey.. You weight 180 soaking wet with boots on! I no I'm fat now but next year I'll be skinny

dodger63

It should but not this one it could be cleaned up allot

GHAZAN

use laxatives everyone's doing it

Badblackfolife

i did all the weight savings and then gained 50lbs myself

SonnyakaPig

For sure. Agreed.

propain

I did... Im down to about 200 now. Dropping a much need 10lb's of holiday weight.

Jon says hes 140. If you met Jon than you know hes more like 120. Either way, I haven't met you yet, I thought I heard you were a light driver.

chief63

Just a quick correction that the F14 18s were also tested at 1500 lbs, I see you mention 1200 twice and then 1500, maybe just an error. thanks!

superlubricity

Actually, I have sets of both and there is a difference. The original F14s were stamped 1200 lbs. They are about .7-lbs lighter per wheel than the newer 1520 lbs stamped ones. The design is slightly different too but only noticeable in the thickness of the spokes near the center of the wheel.

dodger63

So as I thought a lite weight set of wheels save u about 24 total pounds.
Do you have the rear evo rotors, how much do they save

C63newdude

I used a few (4 I believe) Oddisey PC680 batteries. These batteries are the number one choice and weight only 11-13lbs.

Although the weight savings are proven the number one complaint is the rapid discharge. Go to other car forums and see. These batteries wouldn't start your car if you leave it park for 3 weeks or more. Another comun brand is the braille batteries.

SonnyakaPig

I have some questions. I was telling my buddy who drives a BMW 135 about this battery weight savings idea.

He found some discussion online that said the weight savings from the lighter battery is very good but it should be factored against the amount of additional parasitic loss that the engine may see from the alternator having to charge the lighter battery more often?

My initial response was that even if you lose 6-10 bhp from the alternator contributing to greater parasitic loss, when you have a car that comes stock with 450 bhp, and then you get it tuned and maybe even add LT's, any affect on hp from additional parasitic loss is more than made up for with the weight savings from the lighter battery and more importantly, how that weight savings adds together with additional weight savings mods. (sorry for such a long sentence).

Plus, I don't imagine the lightweight battery constantly needs to be charged when the car is driving. Is that true? When the car is driving, does the alternator need to constantly charge the battery?

What do you guys think?

Also, another weight reduction mod that my buddy told me about: draining the windshield washer fluid. I haven't checked under my hood, but does anyone know how much fluid is in that canister?

jrcart

Guys, I've been running carbon fiber Braille batterys for years, they are great batteries. I put one in my Black Series about two years ago, saved me close to 50 pounds but I had issues when I sprayed nitrous, battery is too small for the draw of the nirtous system.

WARNING DO NOT ATTEMPT TO RUN ONE OF THESE BATTERIES IF YOU ARE RUNNING NITROUS!