nhnguy12

Higher trimmed Porsches and all GT-products come standard with PTV. Crazy that they just toggle off functionality in their lower trims with a single line of code.

All the reports I've seen of increased rear brake wear come from heavy track usage. Haven't had an issue myself yet.

AdrGTS

I had my car coded last week and PTV was turned on. Still trying to rack up the miles on my favorite roads to get more information, but so far its positive. Its seamless but I have certainly noticed the car rotating easier than before and the nose tucking in more. Overall the car feels more agile and eager to turn.

Sajan

I might be wrong but doesn't the PTV option out of factory have LSD?

"Porsche Torque Vectoring (PTV) with rear differential lock"

ledbette

Really wish there were a way to dynamically during PTV on/off from the cockpit. PTV can become a nuisance on a short track with a lot of turns. Due to the pulsing rear brake application in turns, it dumps a lot of extra heat into the braking system which, after a long day in warm temps, can cause a spongy brake pedal.

VRShader

yeah, this only partially enable PTV. The differential braking part.

You can’t “download” a LSD lol

nhnguy12

Hold my beer. I'm sure I can find the "enable GT4 RS engine" setting in my PIWIS 2 if I look hard enough.

Sajan

under engineering mode it's
GT4 RS-Motor aktivieren

yebokmj

I activated it on my 981 CS that sees heavy track use and I hated it. Unfortunately for me my PWIS Vas broke after activating it and I was stuck with it on for a whole track day and Time Trials. I thought I might adjust to it but I didn't really, I felt the car almost turned in too much scrubbing of speed and didn't track out as naturally. It's now turned back off.

nhnguy12

@ledbette @yebokmj What brake pads are you using?

I upgraded to Girodisc rotors & DS2500 pads last week and I thought I noticed that the effects of PTV were more apparent than before. It wasn't a huge amount and it's something I've already adapted to. But it's got me thinking that people who run pads that have a very aggressive bite might experience PTV kick in more aggressively/abruptly. I can see how that would be a problem but luckily its very easy to toggle that setting on/off for a track day.

For me PTV is nice to have on a tight and twisty canyon road. Seems less useful for fast track use where it would probably benefit you more to dive into your sway bar and damper settings to get the turn-in characteristics you want without burning up your brakes.

BondJ

I’m not surprised. Without the LSD providing some percentage of drive to both wheels under hard cornering, the brakes will be working overtime to limit spin to the unloaded wheel. Which is not good

BondJ

Your last paragraph nails it. PTV was never meant to be a track setup, even with the LSD. Porsche advertising at the time read “The best differential for the road”.

nhnguy12

PTV seems like an effective and cheap way for Porsche to sharpen the turn-in response on cars they know are going to be primarily driven on the street. I'm sure they realize even their GT products will be driven mostly on public roads. It allows for a sharper front end response on cars with street tires/alignments without the drawbacks of tuning the chassis in such a way that is excessively twitchy or over-steery for the majority of driving done on public roads.

BondJ

Spot on. PTV is definitely worthwhile for road use. For those that primarily track, I would dump PTV and fit a more track-focused slippy.

yebokmj

nhnguy12 I'm running Hawk DTC 60s front and rear with Giro oversized rotors front and rear. I actually tried the DS2500 but found them to be junk for track use.

nhnguy12

From my understanding the DS2500 are Ferodo's version of an aggressive street pad so that would make sense. I'm going to try out their DS3.12 pads when I get out to the track and probably turn off PTV.