Tapeworm

I just went to a weigh scale and found my Spyder was roughly 3005lb. Thus is with a completely full tank of gas (which is -80lb), the roof, flat tire inflator, manuals etc.... I see other car magazines got weights around 2950lb (I assume with a full tank again). I don't have sport buckets (which save about 30lb). What is the weight of a Spyder with no options I wonder.... When Porsche says 2811 - is this 'dry weight'?

• 640 - Sport Chrono Package Plus
• 342 - Heated Seats (Front)
• 376 - Manual Sport Seat (right)
• 375 - Manual Sport Seat (left)
• P77 - Sport Seats in Leather
• 672 - PCM with Navigation Module
• 665 - PCM 3
• P23 - PCM with Navigation Module
• 268 - Rain Sensor
• 267 - Automatically Dimming Interior
• HNL - Fabric Door Opening Loop
• 501 - Full Body Cover
• XDA - Wheels Painted Black
• XLF - Sport Exhaust System
• 490 - Sound Package Plus
• 870 - Universal Audio Interface
• 810 - Floor Mats
• 619 - Bluetooth(R)
• 573 - Automatic Climate Control
• ROOF - Manual Two Panel Roof
• P12 - Self-Dim Mirrors & Rain Sensor

sfo

climate control adds about 30lbs

sound package plus and PCM about 10lbs

A432

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khooni

are you saying the PCCBs save 31 pounds? I am surprised by that because magazines have quoted 7 lbs in total... The 31 number looks wrong to me.

A432

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khooni

Where are you getting your numbers from...

The numbers I got are quoted by excellence magazine. They are a reputable source.

The steel brakes are much smaller than the PCCBs. The calipers are much bigger and therefore heavier.

For a Gt3, the steel brakes are the same size asa the PCCBs so the weight difference is alot larger. Can you please quote your reference or substantiate what you know.

A432

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khooni

Giro Disc? The aftermarket brake disc vendors?

hmmmmmm...........

I had hoped you got it from some source at porsche TBH....

Tapeworm

Thanks for the info. I'm tempted to put a 10lb Lithium battery in the front as this seems like an easy way to lose ~40lb, it's unlikely to affect the suspension much as it's really just the equivalent of half a tank of gas (Although the standard battery is situated weirdly high up in the car).

The only other serious weight savings (Other than bucket seats @ ~26lb) would be a Tubi exhaust to save ~20lb at the rear. Seeing as my car has the PSE though, I would lose the PSE functionality (I assume), I like the sound of the PSE, don't want any drone and I'm not sure if saving 60lb total would make the car *that* different - it's not like the car feels like a pig with a full tank of gas and a puppy when near empty, which means I can’t really feel 80lb difference already…

A432

khooni is correct, 7-8lb. diff for pccb v. steel

khooni

i think they may be quoting Disc savings. If you factor in the calipers, the weight savings should be negligible. Ceramic discs do not have much of a heat sink and the calipers are used to help dissipate heat. Which is why they are sized pleasingly large.

In the McClaren MP4 12 C, the standard steel brake setup is lighter than their ceramic disc setup for this reason.

On a Gt3, the caliper size differential is not that great.

The "weight savings" of a PCCB setup on a cayman has always been a myth to me simply because the sum of the total components do not represent much weight savings. Endurance, however, is another point.

Tapeworm

I checked my battery and it's a 70A one that weighed 42.4lb. Switching to a Odyssey regular or Lithium battery would save about 30lb.

Marine Blue

Excellent info on this thread!

A432

That's interesting, not sure why we got a 3lb. difference, don't know if they changed the spec.,
and personally not a fan of the Odyssey 625/680's, imho they're marginal for our app. unless you're ok with using a tender once in awhile.
Also, something to think about is you'll need a mount setup and to be careful with going too light at the sacrifice of capability.
Personally an absolute min. for our cars would be a 20ah battery if you don't want it always on a tender.
Even with the 20ah, which I use (B2015) if you leave it for more than about 5-7 days or if it gets very cold, you can tell you're getting close to the limit.
You may be able to get away with one of the 13-18ah batteries, but imho you'll have to put it on a tender in cooler climates or if you leave the car for more than a couple days.
If I'm going to be gone for more than 5 days, I put the 2015 on a tender to extend its life, as the AGM's get drained repeatedly, their life span decreases.
Another gotcha with these is the scenario where you go out and drive the car on a warm weekend day,
put it away in a warm garage and don't drive it until the following weekend. After you leave the car,
the right side engine compartment fan can come on for an extended time in a warm garage/environment, and if you don't drive the car for a week it can get a little low with a minimal battery.
Different for lithium, but for the price difference of ~ $1000 more for 5 less pounds than AGM, imho it's hard to justify.
With the 2015 (15lb) + aluminum mount (1lb) your savings is 26lb. for ~$250 with the mount.
If you're someone who runs the radio or fan with the car off (I have no A/C/radio),
or with the amount of electrical items on your specific car, I'd recommend more than the 20ah batteries.

mrd_spy

PCCB save rotational mass, which aids steering,braking and acceleration.
The caliper is fixed in place and is not part of the rotational mass.

Turn in at speed (gyro effect) is far better with PCCB :-)