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Discussion Starter #1
Hi,



First post, so please don't bite. I have been searching the archives for answers, with no result so far.



I am possibly in the market for a 550 and I am interested to know where or if it is possible to reduce weight effectively with reversible and clean mods. For example, the full electric seats look very heavy.




The 550 is a remarkably heavy car by my standards and I am not sure I understand where all of this weight comes from.


Thanks,

Timo
 

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The weight comes from a steel space frame, steel suspension, big wheels and tires, and luxury items like the electric seats. 500+ lbs of big V12 and a tough transaxle add weight, too. The 550 is a GT, not a sports car.
 

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You can drive a mini-van like a sports car, too.
 
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Not much you can do to easily lighten up these cars beyond simple bolt-on stuff. Lighter wheels, lighter battery, lighter aftermarket exhaust combined might drop 100-120 lbs or so. Beyond that, yeah the stock seats are heavy, so you could spend big $$ and find a set of the optional carbon "racing" seats, or install aftermarket racing seats (Sparco/Cobra/Corbeau, etc), so maybe another 80 lbs or so there. Beyond that, you're looking at removing sound deadening material, maybe swapping the heavy stock aluminum hood for a carbon hood (more big $$, if you can find one) and then really tearing into to car to lighten it up more. Realistically, dropping around 200 lbs or so is probably about all you can do without going down a rabbit hole that would ruin the car's civilized GT character and require significant mods. Not to mention big $$$! Or, save your pennies and wait for a Prodrive 550 GT1 race car to come up for sale.
 

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Remarkably heavy? Depends on what you compare it to. It's about 100kgs heavier than a Porsche 992 or a Jaguar F-type. It was just ahead of its time!


Have you driven one, properly? They are fun to drive, great weight distribution, and very controllable. And because of that, remarkably good fun on passes (I mean the Alpine type, but overtaking as well).


I wouldn't worry about it so much and just keep it as it was, or find a different car that suits your tastes better.




Onno
 

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Remarkably heavy? Depends on what you compare it to. It's about 100kgs heavier than a Porsche 992 or a Jaguar F-type. It was just ahead of its time!


Have you driven one, properly? They are fun to drive, great weight distribution, and very controllable. And because of that, remarkably good fun on passes (I mean the Alpine type, but overtaking as well).


You are so right sir .....I would know just a few more miles to 90 k on my wonderful 550 :)
 

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Discussion Starter #12
Thanks for the replies.
I confess I have not driven one. I am used to cars with a power to weight ratio varying between 0.35 and 0.40 hp/kg, which at 0.27 hp/kg the 550 falls short of. Perhaps I need to drive one to get a feel of where its qualities are hiding.
 

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Bill- We are still kicking and the boxes are dwindling. 575M is still in NM.
 

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Bill- We are still kicking and the boxes are dwindling. 575M is still in NM.
Glad to hear you are all well !

It's going to be like getting a new car when it finally gets to you :) some beautiful roads to explore, you guys will have a lot of fun ....

Take care !
 

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You are so right sir .....I would know just a few more miles to 90 k on my wonderful 550 :)

Wonderful Bill! I did 75,000 kms in 10 years in mine. Hoping to add more next year as the finances for a second one should be in place by then.




Onno
 

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Thanks for the replies.
I confess I have not driven one. I am used to cars with a power to weight ratio varying between 0.35 and 0.40 hp/kg, which at 0.27 hp/kg the 550 falls short of. Perhaps I need to drive one to get a feel of where its qualities are hiding.

It is not a light car, that is for sure. And it is not a sportscar. But it is a continent crusher with excellent handling due to fabulous weight distribution and actually a lot of fun on the track even though that is not what it was built for. I don't know any production GT's with manual gearbox that have the kind of hp/kg ratio that you quote, certainly not from 1996.



With a sports exhaust it produces around 500bhp and about 600nm of torque. It is certainly quick enough for me, 0 - 200kmh (120mph) in 14.4 secs. So it depends on what you want. It is a GT, but a very capable (and stylish) one, that is huge fun to drive.


If you get to drive one, please be aware of the very long throttle travel. Some owners don't even get to experience what she can do because they don't use the whole throttle (and because of the torque you never need to, it is just a lot of fun when you do). And be wary of short shifting, she can overpower the rears easily. But if you know what you're doing (which presumably you do given your quoted figures), then she is a pussy cat. I don't know any decent driver in my circle that doesn't like them.





Onno
 

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It is not a light car, that is for sure. And it is not a sportscar. But it is a continent crusher with excellent handling due to fabulous weight distribution and actually a lot of fun on the track even though that is not what it was built for. I don't know any production GT's with manual gearbox that have the kind of hp/kg ratio that you quote, certainly not from 1996.



With a sports exhaust it produces around 500bhp and about 600nm of torque. It is certainly quick enough for me, 0 - 200kmh (120mph) in 14.4 secs. So it depends on what you want. It is a GT, but a very capable (and stylish) one, that is huge fun to drive.


If you get to drive one, please be aware of the very long throttle travel. Some owners don't even get to experience what she can do because they don't use the whole throttle (and because of the torque you never need to, it is just a lot of fun when you do). And be wary of short shifting, she can overpower the rears easily. But if you know what you're doing (which presumably you do given your quoted figures), then she is a pussy cat. I don't know any decent driver in my circle that doesn't like them.





Onno
Good way to put it! Perfect weight balance, plus that perfect balance of firm yet supple suspension tuning that only the Italians and Germans know how to do, plus light and ultra quick steering (2 turns lock to lock) combine to make for sublime handling. It is plenty fast the way it is stock, but add a good (*ahem* Fiammenghi Engineering) exhaust system on it and it transforms into a frickin' beast. You just can't go wrong.
 

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My 575 is going on a diet.

Currently building a full titanium exhaust, with valves, and stainless equal length downpipes. I expect this to drop at least 100lbs off the car.

I pulled the inner foam out of the steering console while de-stickying it, 3lbs dropped. I never thought weight could be lost there, lol.

Next up for me is coilovers, which should drop a few pounds over the OE units. Followed with light wheels; 2 piece brake rotors (4lbs per rotor) and some Ti hardware (2.5lbs for lug bolts)

Some other areas to think of for easy weight reduction:

Headers would drop the weight of the factory manifolds/cats (possibly SAI system) and downpipes.

Brand of tire. Different tire brands and models have different weights.

Brand of battery. Like tires, different brands and models of a battery have different weight. Generally Deka is significantly lighter than other brands. A smaller battery is also an option.
 

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I'd be very hesitant to change tyre brand for the saving of a few kilos. Adhesion is much more important and I personally would never change from the Michelins. They transformed my 550 when I swapped over.
 
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