[963mw]

Anyone know if any company makes full CF or lightweight body parts for the F32's? Looking down on shredding car weight without losing daily driver functionality and looks.

Example: Mercedes offers CF hoods instead of the standard ones to save weight...

[Polo08816]

I usually recommend starting with removing the brakes for weight reduction.

[963mw]

Originally Posted by Polo08816

I usually recommend starting with removing the brakes for weight reduction.

Can't tell if sarcastic or not haha

Edit: Upon pondering I believe this is sarcastic

[G30 B58]

Lighter wheels (unstrung weight) and the M-Performance rotors would certainly make the car more nimble. I've seen people remove the rear seats at the track.

I wouldn't be swapping for CF body panels unless you truly have $$$ to burn and if you have $$$ to burn well, you should have bought an ///M.

[RM7]

Where can you save significant weight?

Lighter wheels.
Aftermarket exhaust (usually far lighter than the OEM stuff with way too many bends and heavier wall thickness of cheaper grade material, and I'm not talking about the muffler, I'm talking about the entire exhaust)
Lighter seats (throw out your 9 way or whatever power seats for some light fixed recaros)
Get rid of the rear seats.
Get rid of anything in the trunk/compartments.
Run 1/2 tank of gas all the time.
Get rid of the runflats for proper "normal" tires.
Aftermarket intake might save a few lbs, usually lighter/allows more deletion of parts than OEM.

There are possibly others, but these would be a pretty good start...unless you really aren't interested in dropping weight. Body panels are usually pretty light, not to mention they are big complex shapes, to replace with CF would require big autoclaves to form the sections, and you might save some weight, but it won't be a good cost to weight reduction factor. It might be worth it for say the hood in addition to everything else, but there are places where you are going to save more weight or rotational mass and the investment there makes a lot more sense.

[HighlandPete]

I understand the OP desires the same day to day function, but there is really a contradiction in running the most bloated example of a 'heavy' engine and xDrive and saving weight.

I'd be looking at the car itself, a 328i with RWD would immediately save weight. An engine tune (without weight penalty) would easily get performance on par with the current car, but a much lighter and nimble vehicle.

HighlandPete

[rolltidef32]

Originally Posted by HighlandPete

I understand the OP desires the same day to day function, but there is really a contradiction in running the most bloated example of a 'heavy' engine and xDrive and saving weight.

I'd be looking at the car itself, a 328i with RWD would immediately save weight. An engine tune (without weight penalty) would easily get performance on par with the current car, but a much lighter and nimble vehicle.

HighlandPete

Very true Pete. To really save, a 2 series with the track package would be the best starting point.

Not much sporty about my F32; the car is huge and is more luxury than anything else, which is why the cost increase. Lots of heavy interior pieces.

Investing in CF anything on a non- ///M is just a bad idea, as pointed out. The hood alone would likely be over $10K. Not sure since I haven't priced one, but just going on materials, fabrication, labor, even design. May be beyond $10K even.

[Thumper333]

I think the OP is looking to lighten his existing car, keeping it's functionality. I am sure he has AWD for a reason and chose the car he wanted.

I mean if we were to assume the weight of the car was ALL that mattered why not have him get a SMART? LMAO

Originally Posted by rolltidef32

Investing in CF anything on a non- ///M is just a bad idea, as pointed out. The hood alone would likely be over $10K. Not sure since I haven't priced one, but just going on materials, fabrication, labor, even design. May be beyond $10K even.

Well, it will have a premium on it since it's for a BMW, but I know when I was looking at CF hoods for my GTI they were only in the $1000-2000 range.

$10k......better come with a hooker and a vat of cavier. LOL

Still, I do agree...lighter wheels, 2-piece rotors and a exhaust will yield far better overall performance gains than just lightening the body.

[greekcs]

Theres a lot of weight to be shed on these cars. The question is, how far are you willing to go before your rides comfort goes out the door. I went a little nuts with my E46; replacing the roof with OEM CSL, CF trunk, bumper, diffuser. It's a slippery slope.

[CalCarNut]

Jenny Craig for the drivers...lol. If it takes 100lbs to lower your track time .10 of a second..then certainly you'll notice a 10lb weight drop while driving your car

[963mw]

Originally Posted by SoCalDave

Jenny Craig for the drivers...lol. If it takes 100lbs to lower your track time .10 of a second..then certainly you'll notice a 10lb weight drop while driving your car

Already did that and lost 25 kg's hahah

[rolltidef32]

Originally Posted by greekcs

Theres a lot of weight to be shed on these cars. The question is, how far are you willing to go before your rides comfort goes out the door. I went a little nuts with my E46; replacing the roof with OEM CSL, CF trunk, bumper, diffuser. It's a slippery slope.

How much for that CF trunk?

If it's as cheap as Thumper says, I think it may be doable.

Although, I wonder if just going with an aluminum trunk, hood, and roof would save enough weight to make a big difference. Moving from steel has worked well for Range Rover.

[CalCarNut]

Originally Posted by rolltidef32

How much for that CF trunk?

If it's as cheap as Thumper says, I think it may be doable.

Although, I wonder if just going with an aluminum trunk, hood, and roof would save enough weight to make a big difference. Moving from steel has worked well for Range Rover.

Ford trucks, too. Although you might get better mileage, the auto study says that body shop repair bills will be through the roof due to materials and more labor skills have to be learned to repair it/them...

[Polo08816]

Have you tried letting the air out of your tires? There's like ~35 lbs of air in there so if you let half of the air out for each tire, you'd save about ~65 lbs.

[ronanz]

Originally Posted by Polo08816

Have you tried letting the air out of your tires? There's like ~35 lbs of air in there so if you let half of the air out for each tire, you'd save about ~65 lbs.

WHOA!!

.

[lens]

Originally Posted by Polo08816

Have you tried letting the air out of your tires? There's like ~35 lbs of air in there so if you let half of the air out for each tire, you'd save about ~65 lbs.

Don't forget to take off the hood to expose your engine too. That right there gives you better airflow + weight reduction.

#nooverheating

[963mw]

Originally Posted by chaungo

Don't forget to take off the hood to expose your engine too. That right there gives you better airflow + weight reduction.

#nooverheating

[963mw]

I guess I'm gonna ditch the run flats for some normal tires and just get the emergency sealant kit. That's a sure way to go with this.

[E30toF30]

I'm curious why you are looking to shed all this weight. Are you planning to seriously track the car? Or are you daily driving the car in the city?

With that said, ditching the runflats probably the best mod for a much better ride, as well as some weight reduction.

Next I would do wheels. Grab some apex wheels. Great price point, beautiful styling, very light (flow forged) and strong. Significantly lighter and stronger than most stock wheels definitely some other forged/flow forged wheels you can consider too.

Full exhaust system will shed a bunch of weight too, as well as give you an improvement in exhaust note (prob not a ton in terms of performance gain though)

And lastly, screw running half half of gas. Just fill up daily and always drive with the need fuel indication on. .

[TANG2864]

Well since no one has put average prices on these parts yet, if you still have the f3x and want cf parts, hoods range from 700-1300 for our cars (I've looked for my 435) and cf/fiberglass trunks are like 500-1000. Everything obviously depends on brand, but brand just gets u fitment guarantees, while the cheaper range are just as light, but without fitment assurance.
U can save a good amount of weight from trunk and hood, only thing is may throw off balance of the car weight, but just a little bit. Like the m4 saves a lot of weight compared to 435s, for example their trunk. The m4 trunk, although similar shape to a 435 weights a good amount less and it's not even full carbon fiber /plastic so imagine what a full cf trunk weight savings would be compared to a stock f3x with a full metal trunk lid. Also, I know u want daily functions, but our seats front and rear are super heavy, don't know the exact weight but I think for the e9x cars front seats were 50+ lbs each aND rear seat was another 50-75lbs.

[Vazinbon]

This is a very old topic, but I'm still interested to know why reduce the weight of the car? How would this change anything much? The speed or waste of gasoline still depends on the engine no? It is more interesting for me to read other people's advice than to search for information through Google. I hope I'm not violating any site rules.

[Selinwine]

Originally Posted by Vazinbon

This is a very old topic, but I'm still interested to know why reduce the weight of the car? How would this change anything much? The speed or waste of gasoline still depends on the engine no? It is more interesting for me to read other people's advice than to search for information through Google. I hope I'm not violating any site rules.

In my opinion, there are a huge number of factors related to the weight of the car. If you really want to find out what the weight of the car affects, it's much easier to Google it through google. Do not waste someone else's time if you can waste your own time. When I want to learn something new for myself, I just Google all the questions that interest me. Although if I know exactly what I'm looking for, I'd rather use Wikipedia and not Google search, but it happens that there is no answer on Wikipedia or it's too small, and Google can find another good source. Or it happens that I'm trying to find a product for myself for example as a scale for a person and it's much easier for me to Google and just click on the first link for example https://www.amazon.com/Vont-Beautifu.../dp/B08SW6F5SZ than asking everybody for help. So from now on, I hope you will first try to find the answer you need yourself.