Prospective 981 GT4 Owners Discussion Forum.
Discussion
People seem very hung up on weight to make a problem. Yet most discussions seem based around the comfort options and looks department during these first 265 pages of this thread. I assume that people who are not getting the cs package for weight reasons also picked all the other weight saving options and none of the weight adding ones? Unless you are making your living out off driving a GT4 on track I don't see the point.
Historically the comfort spec GT models have been less desirable, but a lot of that was due to the seats. For me personally I think it suits the ethos of the car and the anything that migh add safety on track is a no brainer if you like me plan to mostly use it where it belongs. For me the harness is more valuable than the cage. But each to their own.
Historically the comfort spec GT models have been less desirable, but a lot of that was due to the seats. For me personally I think it suits the ethos of the car and the anything that migh add safety on track is a no brainer if you like me plan to mostly use it where it belongs. For me the harness is more valuable than the cage. But each to their own.
PorscheGT4RS said:
ChrisW. said:
Very interesting, and you can imagine that the roll cage and body reinforcement will add stiffness to the suspension platform --- enabling the system to work better ..
A bolt-in cage does virtually nothing for torsional stiffness. You're paying the weight cost mostly for looks.
Just to throw the 'cat amongst the pigeons', I am sure we are all aware following numerous discussions of the pros and cons of ceramics v steels for road and track use etc. Recently however there were reports of added downforce generated when we were speccing the 991 GT3s relating to the smaller steel front rotors compared to the larger ceramics with resultant improvements to turn in. Not that many could tell the difference in practice of course, but nevertheless evidently it existed.
Could the GT4 be the same....just a thought.
Could the GT4 be the same....just a thought.
be interesting to see what a 410mm disk weighs over a 380mm one, as PORSCHE only ever quote like for like size.
I think the issue with the GT4 is the MASSIVE increase in wheel/tyre combo weight. tyres alone weight 6lbs more a corner on the back, I would say 20" wheels weigh another 3 lbs
so cira 10lbs added to the rear per corner in rotating mass !!! and say 6 lbs at the front !
all of that you have to stop rotating and you also have to start accelerating ! add that to loner gears and it's no faster than my cars I own, and imo stops SLOWER !!!
shame Porsche went to 20" wheels on the 981 again adds to the higher speed in each gear !
that 3.8 is all but cancled out adding in both issues !
I think the issue with the GT4 is the MASSIVE increase in wheel/tyre combo weight. tyres alone weight 6lbs more a corner on the back, I would say 20" wheels weigh another 3 lbs
so cira 10lbs added to the rear per corner in rotating mass !!! and say 6 lbs at the front !
all of that you have to stop rotating and you also have to start accelerating ! add that to loner gears and it's no faster than my cars I own, and imo stops SLOWER !!!
shame Porsche went to 20" wheels on the 981 again adds to the higher speed in each gear !
that 3.8 is all but cancled out adding in both issues !
PorscheGT4 said:
be interesting to see what a 410mm disk weighs over a 380mm one, as PORSCHE only ever quote like for like size.
http://rennlist.com/forums/991-gt3/853691-991-pccb...
10lbs or so per corner it seems from rennlist and I think the calipers are the same size for both. Which is quite a lot but unsprung mass in theory has a much bigger effect further from the wheel centre so ideally one would prefer savings are gained from lower tyre/rim weight rather than hub/discs potentially I suppose.
Either way in all honesty the GT4 is really massively overbraked.
Edited by isaldiri on Monday 10th August 12:32
indeed. you get 40lbs savings on PCCB or 30lbs on Lithium.
because the GT4 is already over-braked, I deemed it unnecessary to take on the additional PCCB risks but the gen 3 discs are reportedly much improved so they could potential resist oxidation even better on track. Furthermore, I don't think the GT4 can generate enough heat the same way a 918 generates heat so it may be a worthwhile bet to get these with kudos of having 918 brakes.
For feel, steel still the best.
I was on the fence with these for the longest time....... thing is if you decide to get steel replacements for whatever reason, you have to get 410mm disc not the 390mm ones. But as I said before the weight loss is significant and so is the cost.
I would rather invest in a set of 19" forged track wheels. That would give me the multiplier I crave. Wonder who in the U.S will come up with the first set?
because the GT4 is already over-braked, I deemed it unnecessary to take on the additional PCCB risks but the gen 3 discs are reportedly much improved so they could potential resist oxidation even better on track. Furthermore, I don't think the GT4 can generate enough heat the same way a 918 generates heat so it may be a worthwhile bet to get these with kudos of having 918 brakes.
For feel, steel still the best.
I was on the fence with these for the longest time....... thing is if you decide to get steel replacements for whatever reason, you have to get 410mm disc not the 390mm ones. But as I said before the weight loss is significant and so is the cost.
I would rather invest in a set of 19" forged track wheels. That would give me the multiplier I crave. Wonder who in the U.S will come up with the first set?
[quote=PorscheGT4]not so sure it's over braked going by the PEC car :-( either some thing is wrong with that braking system on that car or some thing else is a miss.[/quote
Haven't driven the PEC car. but by all accounts, the steels are more than adequate even on the Gt3/ RS let alone a lighter, less HP car.
Haven't driven the PEC car. but by all accounts, the steels are more than adequate even on the Gt3/ RS let alone a lighter, less HP car.
PPPPPP said:
PorscheGT4 said:
not so sure it's over braked going by the PEC car :-( either some thing is wrong with that braking system on that car or some thing else is a miss.
Preuninger says it is overbraked - you had a a bad experience.HokumPokum said:
For feel, steel still the best.
I would rather invest in a set of 19" forged track wheels. That would give me the multiplier I crave. Wonder who in the U.S will come up with the first set?
Agreed, proper slotted iron rotors/track pads and lighter 19" wheels would definitely be my pick as well for a track biased car.I would rather invest in a set of 19" forged track wheels. That would give me the multiplier I crave. Wonder who in the U.S will come up with the first set?
PorscheGT4 said:
PPPPPP said:
Preuninger says it is overbraked - you had a a bad experience.
sales talk :-) it worked they sold 4x the UK amount with NO advertising !the PEC car might be a 1 off, I'll get mine soon and report back then, on paper figures should mean it's amazing !!
Your experience is a one off, leave it at that.
no others have said the PEC car is to quote "has rubbish brakes"
I don't buy new cars, nor do a lot of new GT4 owners !! , It was a no risk buy.
If interest rates were higher like on the other thread talk, Porsche would NOT have pre sold them all ! it's that simple imo has nothing to do with the "great & affordable package"
I know many people in GT4 ownership who said "you would be mental NOT to buy one" I would say we will see loads for sale in 12 months esp if they fetch £20k
I don't buy new cars, nor do a lot of new GT4 owners !! , It was a no risk buy.
If interest rates were higher like on the other thread talk, Porsche would NOT have pre sold them all ! it's that simple imo has nothing to do with the "great & affordable package"
I know many people in GT4 ownership who said "you would be mental NOT to buy one" I would say we will see loads for sale in 12 months esp if they fetch £20k
PorscheGT4 said:
If interest rates were higher like on the other thread talk, Porsche would NOT have pre sold them all ! it's that simple imo has nothing to do with the "great & affordable package"
I know many people in GT4 ownership who said "you would be mental NOT to buy one" I would say we will see loads for sale in 12 months esp if they fetch £20k
I strongly disagree with both of the above the sold out gt4 has nothing to do with interest rates,the gt4 at £65k it is a cheap package and people will still be buying new cars of £100k or less even with higher rates!I know many people in GT4 ownership who said "you would be mental NOT to buy one" I would say we will see loads for sale in 12 months esp if they fetch £20k
I am not so sure you will see loads for sale this time next year because at that price point what do you replace it with and if interest rates rise and the premium car market cools there will be no premium buyers of the gt4 or any other car so remaining at £65k not worth selling!
itsybitsy said:
I strongly disagree with both of the above the sold out gt4 has nothing to do with interest rates,the gt4 at £65k it is a cheap package and people will still be buying new cars of £100k or less even with higher rates!
I am not so sure you will see loads for sale this time next year because at that price point what do you replace it with and if interest rates rise and the premium car market cools there will be no premium buyers of the gt4 or any other car so remaining at £65k not worth selling!
but they are £75k in real money and interest rates played a massive part in people playing with money they cannot get much interest from.I am not so sure you will see loads for sale this time next year because at that price point what do you replace it with and if interest rates rise and the premium car market cools there will be no premium buyers of the gt4 or any other car so remaining at £65k not worth selling!
Look at R and and Spyder sales when people has less money, 2 of the best Cars Porsche have made and very very low world wide sales in fact they had to discount the R and only 220 got sold in the UK.
PorscheGT4 said:
no others have said the PEC car is to quote "has rubbish brakes"
I don't buy new cars, nor do a lot of new GT4 owners !! , It was a no risk buy.
If interest rates were higher like on the other thread talk, Porsche would NOT have pre sold them all ! it's that simple imo has nothing to do with the "great & affordable package"
I know many people in GT4 ownership who said "you would be mental NOT to buy one" I would say we will see loads for sale in 12 months esp if they fetch £20k
Shame interest rates aren't higher then maybe you wouldn't have ordered one and then I could log on to this forum and read some interesting posts instead of the usual nonsense. I don't buy new cars, nor do a lot of new GT4 owners !! , It was a no risk buy.
If interest rates were higher like on the other thread talk, Porsche would NOT have pre sold them all ! it's that simple imo has nothing to do with the "great & affordable package"
I know many people in GT4 ownership who said "you would be mental NOT to buy one" I would say we will see loads for sale in 12 months esp if they fetch £20k
PorscheGT4 said:
but they are £75k in real money and interest rates played a massive part in people playing with money they cannot get much interest from.
Look at R and and Spyder sales when people has less money, 2 of the best Cars Porsche have made and very very low world wide sales in fact they had to discount the R and only 220 got sold in the UK.
With respect, the GT4 is a different league to the R. Look at R and and Spyder sales when people has less money, 2 of the best Cars Porsche have made and very very low world wide sales in fact they had to discount the R and only 220 got sold in the UK.
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