Discussion
Far Cough said:
Yes I didn't mean anything to do with suspension. One thing that annoyed me about my CR was the inability to switch TC off fully. Light still blinked and brakes still applied. Just wondered if the new one was different and could be totally disabled ala GT3 ???
Its off enough to not cut in unless you are driving it wrong I find ;-) in fact never had it cut back in in the Cayman bar spinning it in the wet at about 80mph trying to do a 50 meter drift at brunters, if I did not spin you can drift it no issue with PSM off round that full back bend.ALso tracked it at Donny at it does not cut back in and I have friends who track the R and it does not cut back in.
but you can program it out anyway on the software, so an easy fix if you want it fully off for ever.
mrdemon said:
Far Cough said:
Yes I didn't mean anything to do with suspension. One thing that annoyed me about my CR was the inability to switch TC off fully. Light still blinked and brakes still applied. Just wondered if the new one was different and could be totally disabled ala GT3 ???
Its off enough to not cut in unless you are driving it wrong I find ;-) in fact never had it cut back in in the Cayman bar spinning it in the wet at about 80mph trying to do a 50 meter drift at brunters, if I did not spin you can drift it no issue with PSM off round that full back bend.ALso tracked it at Donny at it does not cut back in and I have friends who track the R and it does not cut back in.
but you can program it out anyway on the software, so an easy fix if you want it fully off for ever.
ORD said:
In those circumstances, who would actually want it off for ever? I dont think many people actually want to spin/die. The real point is ensuring that it does not cut back in when you are actually in control of the car and want it to behave as it would without tc.
PSM off will not make you die, I have owned many cars with no PSM,/ dsc, tc etc etc.I drive PSM off 100% of the time.If it cuts in when it's off, it's too late any way, you will as you put it "spin and die" You cannot stop the laws of physics if you are going 30mph over the limit Into a corner.
You have to decide if you can drive or just want to own a GTR type of car.
To many noobies are buying gt3 and posting "why am I spinning"
Run a 400bhp noble for a while and you learn a bit about cars with no electrics
No one seems able to drive any more, people don't even want to change gears these day.
The new GT3 is a sad car imo. Way to much electrics going on to make people will no skill drive faster. all we will see is more crashed ones.
mrdemon said:
so he is going to curb is 20" wheels and he will gain more grip by Porsche PTV !!!
I also like how no ones says the GTS pack is 2k on top of the GTS price.
Sorry to ask a dopey, but genuine, question, but what would the advantages of PTV be on 'normal' driving? Would it help on slippery roads, in snow perhaps?I also like how no ones says the GTS pack is 2k on top of the GTS price.
Still need to finalise the spec for my GTS, tying to decide if the PTV is going to be useful
Completed a Porsche Experience day at Silverstone yesterday (fantastic morning) and the instructor stated not worth having PTV. PTV brakes the inside wheel when cornering helping the car to be pulled around the corner. Probably means that the pads and rear disks will require changing more regularly.
What I did find amazing that the Boxster I was driving had ceramic brakes, when I drove one without I thought the brakes had failed.
This was not something that I was going to option on a Boxster GTS but has got me thinking....
What I did find amazing that the Boxster I was driving had ceramic brakes, when I drove one without I thought the brakes had failed.
This was not something that I was going to option on a Boxster GTS but has got me thinking....
Edited by SHIFTY on Wednesday 14th May 12:03
Do yourself a favour and ask someone like Steve McHale at JZM or one of the tech guys at Parr. I'm not convinced that's how the diff works. I could be wrong, I thought a locking diff cut power to the spinning inside wheel. I've never heard of it impacting brake wear either.
If you're a keen driver then I'd always say a LSD/PTV is worth it. There is only one reason not to have it and that's cost. Also I wouldn't buy a used one without it, I cant see someone not wanting a used car because it has one whereas if the situation were reversed I can. Hope that makes sense.
As you've mentioned specific driving situations where you'd wand a locking diff, I would say you should go for it.
If you're a keen driver then I'd always say a LSD/PTV is worth it. There is only one reason not to have it and that's cost. Also I wouldn't buy a used one without it, I cant see someone not wanting a used car because it has one whereas if the situation were reversed I can. Hope that makes sense.
As you've mentioned specific driving situations where you'd wand a locking diff, I would say you should go for it.
here's what i think :
the PTV setup consists of 2 parts:
the braking of the inside wheel and the transfer of power to the outside loaded wheel. In this way, it helps put down power and makes the car turn in better. Thus the car becomes more agile versus a car without the 2 parts mentioned.
Part 1 is electronic braking
part 2 is LSD
that's why PTV consists of both parts. It is the combo that is the most effective.
w.r.t rear brake wear, this is also true. If you are an untidy driver, hoon alot and enjoy big skids, this will prolly not be the gear for you. If tidy and precise, the brake wear will be ok. On way to check is whether you currently wear your rear pads more than your fronts and does your cars PSM light up continuously on track.
I myself would always spec it if available.
If anyone has a better insight, pls share.
the PTV setup consists of 2 parts:
the braking of the inside wheel and the transfer of power to the outside loaded wheel. In this way, it helps put down power and makes the car turn in better. Thus the car becomes more agile versus a car without the 2 parts mentioned.
Part 1 is electronic braking
part 2 is LSD
that's why PTV consists of both parts. It is the combo that is the most effective.
w.r.t rear brake wear, this is also true. If you are an untidy driver, hoon alot and enjoy big skids, this will prolly not be the gear for you. If tidy and precise, the brake wear will be ok. On way to check is whether you currently wear your rear pads more than your fronts and does your cars PSM light up continuously on track.
I myself would always spec it if available.
If anyone has a better insight, pls share.
From Porsche website:-
When the car is driven assertively into a corner, moderate brake pressure is applied to the inside rear wheel. Consequently, an additional rotational pulse (yaw movement) is induced around the vehicle’s vertical axis in the direction of the turn. This results in a direct and sporty steering action as the car enters the corner.
At low and medium vehicle speeds, PTV significantly increases agility and steering precision. At high speeds and when accelerating out of corners, the rear differential lock ensures greater driving stability and traction on road surfaces with varying grip, including the wet and snow.
The results are remarkable stability, optimum traction and excellent cornering dynamics at all speeds, coupled with precise steering and stable load transfer characteristics through every twist and turn of your journey.
So at light to medium speeds braking is applied at high speed the diff kicks in, I would just want the diff or the ability to turn off the PTV braking.
When the car is driven assertively into a corner, moderate brake pressure is applied to the inside rear wheel. Consequently, an additional rotational pulse (yaw movement) is induced around the vehicle’s vertical axis in the direction of the turn. This results in a direct and sporty steering action as the car enters the corner.
At low and medium vehicle speeds, PTV significantly increases agility and steering precision. At high speeds and when accelerating out of corners, the rear differential lock ensures greater driving stability and traction on road surfaces with varying grip, including the wet and snow.
The results are remarkable stability, optimum traction and excellent cornering dynamics at all speeds, coupled with precise steering and stable load transfer characteristics through every twist and turn of your journey.
So at light to medium speeds braking is applied at high speed the diff kicks in, I would just want the diff or the ability to turn off the PTV braking.
I never missed a diff on my gen 1 Cayman, the grip is hugh already to not spin a wheel.
rear braking is not nice, over heating brakes etc etc my OPC even stated the rears on all the service cars are now wearing before the fronts.
I like the LSD in both my cars but lucky I don't have to put up with PTV.
rear braking is not nice, over heating brakes etc etc my OPC even stated the rears on all the service cars are now wearing before the fronts.
I like the LSD in both my cars but lucky I don't have to put up with PTV.
mrdemon said:
ORD said:
In those circumstances, who would actually want it off for ever? I dont think many people actually want to spin/die. The real point is ensuring that it does not cut back in when you are actually in control of the car and want it to behave as it would without tc.
PSM off will not make you die, I have owned many cars with no PSM,/ dsc, tc etc etc.I drive PSM off 100% of the time.If it cuts in when it's off, it's too late any way, you will as you put it "spin and die" You cannot stop the laws of physics if you are going 30mph over the limit Into a corner.
You have to decide if you can drive or just want to own a GTR type of car.
To many noobies are buying gt3 and posting "why am I spinning"
Run a 400bhp noble for a while and you learn a bit about cars with no electrics
No one seems able to drive any more, people don't even want to change gears these day.
The new GT3 is a sad car imo. Way to much electrics going on to make people will no skill drive faster. all we will see is more crashed ones.
juansolo said:
mrdemon said:
ORD said:
In those circumstances, who would actually want it off for ever? I dont think many people actually want to spin/die. The real point is ensuring that it does not cut back in when you are actually in control of the car and want it to behave as it would without tc.
PSM off will not make you die, I have owned many cars with no PSM,/ dsc, tc etc etc.I drive PSM off 100% of the time.If it cuts in when it's off, it's too late any way, you will as you put it "spin and die" You cannot stop the laws of physics if you are going 30mph over the limit Into a corner.
You have to decide if you can drive or just want to own a GTR type of car.
To many noobies are buying gt3 and posting "why am I spinning"
Run a 400bhp noble for a while and you learn a bit about cars with no electrics
No one seems able to drive any more, people don't even want to change gears these day.
The new GT3 is a sad car imo. Way to much electrics going on to make people will no skill drive faster. all we will see is more crashed ones.
paralla said:
BGHughes said:
Thanks for the info folks; on balance the PTV seems unnecessary for daily driving
now, what to spend the £800 saved on ..
Put it towards Burmester. You will love it.now, what to spend the £800 saved on ..
gotta love the logic...
BMCG said:
ahh yes...substitute a sound system for one that enhances stability/traction/handling...
gotta love the logic...
I enjoy my stereo every single time I drive my car, not just the 2% of the time that an LSD might be enjoyed. Granted PTV might be detectable through the steering and turn-in more than that but the standard chassis is already pretty sublime.gotta love the logic...
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