Nizer

Thought I'd put this in perspective.

RS Curb Weight 3020lb

PCCB -44lb -1.46%
Lightweight Battery -22lb -0.73%
Audio Delete -6.6lb -0.22%
Lightweight Headlight -13.2lb -0.44%
A/C Delete -37.5lb -1.24%

Total -123.3lb -4.1%

And if you happen to be lucky enough to live in ROW and order CGT seats w/o Club Sport pkg:

CGT Seats -22lb -0.73%

Total -145.3lb -4.81%

Made it a little easier for me to decide what I was willing to sacrifice.

NJ-GT

The curb weight published by Porsche doesn't apply to U.S cars.

Expect a base US 2010 RS with no fuel to be over 3,120 lbs, or 3,230 lbs with a full tank of fuel.

Nizer

So reduce my % weight saving gains by 6-7% if true.

Sloth

What are the items in US spec cars that are going to make it heavier? I'll assume the rear window in glass rather than plastic is the biggest difference. Does the published weight include the rollbar that the ROW gets?

Nizer

Should not include rollbar as it's a ROW option.

timothyli

The % weight savings should decrease as the vehicle weight increases and weight saving remains constant, so weight saving around 4.5-4.6 % according to 3120-3230lbs.

Nizer

PCCB -44lb/3230lb = 1.36%, thus a 7% "reduction in savings gain" vs 1.46% gain for 3020lb curb weight.

Higher math

NJ-GT

The ROW are also heavier than the published Porsche weight values in the user's manual. It has been like this for ages. Some say that the weight figures are for the standard and optional equipment that ensures the lowest weight, but if this were true, even the U.S. version car would be lighter (no fuel) than 3,020 lbs.

The ROW cars have lighter bumper beams (behind the bumper cover), lighter rear bumper (no bumperettes) and in some cars (mostly older cars) lighter emission equipment (air pump and catalytic converters).

Nizer

Oh to be free of bumperettes.

timothyli

(1.46 - 1.36) / 1.46 = 6.85% ~ 7%.
This is how much of the PCCB weight saving is LOST due to increased original vehicle weight. In this case, weight increased from 3020lb to 3230lb. Of course this same number applies to the total of the weight saving 145.3lb as well.

I don't what kind of higher math you're talking about. Total weight saving = 145.3 lbs as you mentioned. If vehicle weight is 3020 lbs, then you save (145.3 / 3020) 4.81%, which you worked out as well. If vehicle weight is indeed 3230lbs, with these same weight saving options you will save (145.3 / 3230) 4.50%. ~ 7% less in weight reduction as I just mentioned.

P.s. I just read your post again, I thought you meant weight saving will increase from 4.8% to 7%. And yes, your statement is correct.

YearOne

At the RS preview event it was confirmed that Porsche quote their cars WET weight which includes a tank of fuel and all fluids filled including the windscreen washer bottle. Ferrari for instance quote a dry weight with NO fluids at all not even brake fluid or engine oil which always seems a bit stupid and pointless.

Nizer

I'd heard the same, but NJ-GT claims different. Guess we'll have to wait until someone throws it on a scale to know the truth.

TeamDrugMoney

Hmmmm..... WTF! Help me with the disconnect here....

My 2010 GT3 listed with Porsche as a weight of 3075#. I have the reds, 997 GT2 SB Seats, lightweight headlights, floor mats. I had the car on the scales at a club race and with me in it it came to 3345#

3345#

Deduct me and inside equipment - 185# (me 175# then helmet and Traqmate, chasecam and the six pack of beer, LOL)

You then get 3160#

I had a half of a tank of gas, so according to Porsche I should be even lighter than their 3075#. I also have lightweight options on the car. I do not have heavy options, other than floor mats. Where is the difference?!?!?!?! What did I miss?

340Elise

Whatever they are quoting, it is off here in the US and I can't speak for the ROW. I have been weighing my 911's since 2003 and including my friends GT3 have weighed 7 models. All of them were around 100 lbs - 120 lbs heavier than published, and that was with the tank near empty. None of them ever had many options with bixenons being the only one worth mentioning.

With my basically zero option 2008 GT3 (it has the base carbon package, red belts and floor mats; none of which adds weight except for the mats at 2 or 3 lbs total) weighed in without any mods and 3 gallons of fuel at 3,200 lbs. With zero fuel it would have been about 3180 lbs which is 105 lbs more than the published 3075 lbs.

Since then I have weighed my GT3 about another 6 times to monitor my extreme diet and have achieved 2,850 lbs without a passenger seat or any safety equipment and maybe a couple gallons of fuel. With the extra seat, rollbar and harnesses it goes to 2,900 lbs with no fuel.

So if you take the new RS at 3020 and deduct 110 lbs for the weight reduction options mentioned by the OP, save the AC delete (I still have my AC), and it would be at 2910 lbs (we will assume also with no fuel to be nice). That means it is 10 lbs more than my GT3 with a Euro roll bar, harnesses, Euro cloth seats, PCCBs, my own 22 lb light weight battery (which, btw cost less than $200 and works like a charm year round), no audi equipment, and no xenons. I even have the RS LWFW, clutch, crank pulley, and no sunroof.

Hmmmmmmmm......interesting. Maybe Porsche is telling the truth on the new RS? NOT!!! The only thing I forgot to mention is that my GT3 has been striped to the point of a Cup car (almost). I have no carpet anywhere including the trunk, my roof is carbon fiber with no liner (about another 25 lbs lighter than non-sunroof GT3/RS's), my center console is gone as is my entire parking brake assembly from the handle to the cables and drums, I have no internal bumpers front or rear, nor do I have even one muffler. Then if you add the little things I removed I can scrape together easily another 20 if not 30 lbs. Oh, and my 18" CCW wheels should be lighter also. Add all that up and you get over 200 lbs, but I will round down to 200. So that puts the RS at about 3100 lbs since it does not have my these extreme weight reduction mods. However, I do have to give it 7 lbs for the rear lexan and how about another 40 lbs for the titanium exhaust which is being very generous. That takes it to 3,050 lbs when it should be closer to 2910 lbs.

Sounds just about right to me!!! Porsche is very consistent with their generous low-weight estimates.

I guess that means the new Boxster Spyder will really weigh closer to 2910-2930 lbs. It can't be the claimed 2810 lbs, they would be breaking tradition.

TeamDrugMoney

Ohhh, forgot to add this part. From what I have listed it seems more the case that the Porsche listed 3075 is a dry weight (without fluids) as if you add in the washer fluid, gas, engine oil and whatever else is inder the hood somewhere, then you get my weights to add up, or at least pretty close.