rs10

What does the LSD do for the handling? I mean, I know it enables stronger acceleration out of tight turns; suppose it enables longer, better controlled drifts; and have heard it makes heavy braking more stable (presumably with PASM off). But what about at less than 10/10ths? I'm hoping it might make the the rear more throttle steerable or perhaps even make the front end pointier. Does it? And/or any other handling impact at less than 10/10ths?

Seeeu911

LSD is most effective with cornering and traction control. When the inside wheel starts spinning because of the weight transfer leading to less grip, your Porsche loses the ability to put power down on the road with the outside wheel. This isn't good, especially if you're trying to put in a good time on the track or aggressive street driving.

IMHO LSD is not as much a factor in street driving compared to AWD which in the 996 is AWD on all the time even in low speed cornering and traction events.

996_North

OP should start an actual pole on this.

garrett376

But because the 40th has PSM, the engine will cut power to stop the wheel spin anyhow. And how many people track a 40th Anniv. 996 as any potential extra value the car has over a regular 996 would be shot, so I'd imagine it seldom happens! Again, I don't see the LSD as a performance enhancer to affect the OP's decision between the C4S and 40th Anniv. 996.

Seeeu911

You are right, on both counts.
I've never seen a pic of a 40th yet on track. I hope someone defies the norm there and does.

That why the AWD also with PSM is faster. ( I just love saying that )

TAZ40JAHRE

Here you go...

1. Nr. 0051
2. Nr. 0336
3. Nr. 0396
4. Nr. 0507
5. Nr. 0603

TAZ40JAHRE

1. Nr. 0646
2. Nr. 0714
3. Nr. 0878
4. Nr. 0964
5. Nr. 1010

TAZ40JAHRE

1. Nr. 1187
2. Nr. 1240
3. U294
4. U442
5. U766

(note - "U" cars do not have known limited edition numbers - the "U" number refers to where the car is listed in the 40AE registry)

Spinout

I track mine regularly. As far as value tracking it, it's a fantastic value.

alpine003

Lol, +996

If you're worried about diminished value, you shouldn't be looking at 996 in the first place. if you're looking for the best value as a buyer, welcome aboard.

D6lc

To be honest my 40th has been great value, super reliable, minimal mantenance required and I would say that in the past 3 yrs of ownership the value is flat to slightly increased.

The only downside is that once you get a 996, you spend a fortune modding it. You dont have to as the car is great as it comes, but one you start you just cant stop!!

ALE

Drive both and see what you like best.
BTW, my avatar picture is on track @ Barber's.

rs10

The PSM would not work with most LSDs, which I understand is why they did not offer the LSD in 2002. But eventually Porsche figured out how to make a LSD with a very low ratio - about 22% - which works with PSM. This is the LSD on the 40th (and other rwd normal 996s with the LSD option). So I would suppose that it would allow some power to the non-spinning wheel before cutting power, no?

And it won't cut power if you turn PSM off :-)

EDIT: I've done some more LSD reading, and I don't want to be spreading misinformation. While there are lots of sources saying the OEM LSD has a 22% ratio, lots of others say 40%, which I'm beginning to think is correct. And is it true as I originally wrote that lots of LSDs don't work with PSM? Well, maybe many are useless with PSM on, don't know, but it sounds like many do make a difference with PSM off.

rs10

But doesn't converting to 2wd remove all the handling benefits? While there are a lot of small differences that could slightly improve handling, I think there are only 3 big ones: (1) power to the front wheels, (2) better weight distribution, and (3) springs, dampers, and maybe anti-roll bar - most/all are stiffer than all but the hardest option for regular 996s. (Though does anyone know if the stiffness increase is beyond that needed to compensate for the extra weight?)

Of course, the third difference could address the slow turn in and inert rear that some complain about with regular, 2wd 996.2s. But if so, then surely everyone would modify their suspension, and no one on the forum would talk about the C4S's handling advantages ... ?

Or am I wrong - does a "C2S" keep most of the C4S's handling advantages? And can modifying a regular 996.2's suspension make it handle like a C4S? (Or a 996.1, for that matter?)

MiamiC70

My experience mirrors this comment all too closely.