Posted: Fri Apr 21, 2017 4:31 pm Post subject: Comfort Tyre Pressures or Normal
Been using comfort tyre pressures since I got the vehicle. On a road trip next week to Dinslaken and beyond. Even on the autobahn I guess any speeds of over 160 mph will be brief and intermittent. Wondering if I should increase pressures to NORMAL range or just leave at comfort setting as virtually all motoring will be under 160 mph which Porsche handbook says is ok for comfort setting. Thoughts ..... _________________ Current : 991.2 C2 SC PDK
Previous: 2015 Cayman 2.7.
DRZ911 Barcelona
Joined: 13 Mar 2013 Posts: 1305 Location: Belfast
Posted: Fri Apr 21, 2017 6:02 pm Post subject:
For sustained 100mph+ driving all day long on the autobahn, would certainly recommend increasing the pressures to the NORMAL setting. In my opinion, it adds to the feeling of precision at speed. _________________ 991 Gen 1 C4S PDK Carrara White
Yamaha R1 and BMW R100RS
alex yates Donnington
Joined: 06 Mar 2014 Posts: 12772 Location: The Ribble Valley, Lancashire
never knew there were any different choices!? _________________ Present:
991.2 Carrera, SC, PDK, Toys
Yamaha MT01
VW T2 Bay Window 1976
Past:
640d GC, 635d Coupe, RS6 C5, Audi TT 225 Coupe, Astra with wind up windows, Citroen ZX, Rover 213, yes behold, a Rover 213... Renault 5
weejimmy Spa-Francorchamps
Joined: 26 Mar 2014 Posts: 283 Location: Bucks
Posted: Sat Apr 22, 2017 4:38 pm Post subject:
TPS screen on the TFT offers you the choice and then tells you the correct pressures for either. I run comfort and put the suspension into Sport via PASM when I want it a little more pointy. Works well!
911TEL Suzuka
Joined: 29 Oct 2007 Posts: 1158 Location: Inverness and Highlands
I am confused ...what is ' comfort' tyre pressure ?
Where does it detail that setting and description in the manual?
I just see the 2 settings
'2 passengers'
'2 passengers plus baggage '
Nothing about 'Comfort ' ..... Surely the pressures are not defined as this ..?
T _________________ Cayman GT4 Carmine red .. at last it gets the goodies it should have....
997 Gen 2 Turbo S Basalt Black -BBS CHR, Kline inconel exhaust, Polished Bliss air freshener...
Cayenne S diesel 850 N/ m torque!!!! Jet black
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911TEL Suzuka
Joined: 29 Oct 2007 Posts: 1158 Location: Inverness and Highlands
I am confused ...what is ' comfort' tyre pressure ?
Where does it detail that setting and description in the manual?
I just see the 2 settings
'2 passengers'
'2 passengers plus baggage '
Nothing about 'Comfort ' ..... Surely the pressures are not defined as this ..?
T _________________ Cayman GT4 Carmine red .. at last it gets the goodies it should have....
997 Gen 2 Turbo S Basalt Black -BBS CHR, Kline inconel exhaust, Polished Bliss air freshener...
Cayenne S diesel 850 N/ m torque!!!! Jet black
SL 55 AMG Obsidian Black
Brompton S2L Black edition
Gorsh Trainee
Joined: 24 Oct 2015 Posts: 76 Location: Isle of Man
I am confused ...what is ' comfort' tyre pressure ?
Where does it detail that setting and description in the manual?
I just see the 2 settings
'2 passengers'
'2 passengers plus baggage '
Nothing about 'Comfort ' ..... Surely the pressures are not defined as this ..?
T
It must be the 991 models that have this?
6appeal Nürburgring
Joined: 02 Jan 2016 Posts: 381
Posted: Sat Apr 22, 2017 5:20 pm Post subject:
weejimmy wrote:
TPS screen on the TFT offers you the choice and then tells you the correct pressures for either. I run comfort and put the suspension into Sport via PASM when I want it a little more pointy. Works well!
You've got me intrigued... never noticed that. I'll give it a press tomorrow. _________________ Present:
991.2 Carrera, SC, PDK, Toys
Yamaha MT01
VW T2 Bay Window 1976
Past:
640d GC, 635d Coupe, RS6 C5, Audi TT 225 Coupe, Astra with wind up windows, Citroen ZX, Rover 213, yes behold, a Rover 213... Renault 5
DRZ911 Barcelona
Joined: 13 Mar 2013 Posts: 1305 Location: Belfast
Posted: Sat Apr 22, 2017 6:21 pm Post subject:
Think this feature was introduced on the 991.1.
On my car, there is a COMFORT box to tick. This normally equates to 2.1 bar in the fronts and 2.3 bar in the rears (when warm).
If this COMFORT box is unticked, the pressures shown are at STANDARD, which roughly requires an extra 0.2 bar in the rears only (i.e. 2.5 bar total).
If the FULL LOAD box is then ticked, all 4 tyres need a further 0.5 bar added over STANDARD (2.6 bar in the fronts and 3.0 bar in the rears).
STANDARD offers a firmer response from the rear end over COMFORT. Worth trying to see it it suits your driving style. _________________ 991 Gen 1 C4S PDK Carrara White
Yamaha R1 and BMW R100RS
911TEL Suzuka
Joined: 29 Oct 2007 Posts: 1158 Location: Inverness and Highlands
I'm going to go through the menus on mine then ... I hope I don't see ' Comfort ' on it...on a Turbo S ??
'Standard' I could live with but ' comfort' .... no ,... _________________ Cayman GT4 Carmine red .. at last it gets the goodies it should have....
997 Gen 2 Turbo S Basalt Black -BBS CHR, Kline inconel exhaust, Polished Bliss air freshener...
Cayenne S diesel 850 N/ m torque!!!! Jet black
SL 55 AMG Obsidian Black
Brompton S2L Black edition
Six speed Trainee
Joined: 20 Feb 2015 Posts: 82 Location: Essex/Hertfordshire border
Posted: Sun Apr 23, 2017 8:04 am Post subject:
911TEL wrote:
I'm going to go through the menus on mine then ... I hope I don't see ' Comfort ' on it...on a Turbo S ??
'Standard' I could live with but ' comfort' .... no ,...
This feature wasn't on my 997 but it is on my 991 _________________ 991 Turbo S
Martian Sepang
Joined: 18 Mar 2009 Posts: 2799 Location: Bury St. Edmunds
My daily driver (non Porsche) has the option of economy or comfort pressures!
6appeal Nürburgring
Joined: 02 Jan 2016 Posts: 381
Posted: Tue May 02, 2017 9:18 pm Post subject:
Its all pretty irrelevant system to me... depends what your load and max speed in the car is (and you're talking over 160mph so autobahn or track)... if you run higher pressure it will wear the centre of the tyres quicker, if you run lower pressure it will wear the outer edges of the tyre quicker... if you run the correct pressure to your load, you will wear evenly and have a consistent contact patch and grip. _________________ Present:
991.2 Carrera, SC, PDK, Toys
Yamaha MT01
VW T2 Bay Window 1976
Past:
640d GC, 635d Coupe, RS6 C5, Audi TT 225 Coupe, Astra with wind up windows, Citroen ZX, Rover 213, yes behold, a Rover 213... Renault 5
Disco Estoril
Joined: 13 May 2008 Posts: 3788 Location: Hertfordshire
If you are filling the back with weighty luggage then put a bit more pressure in. Otherwise don't bother IMHO. When I first started taking my previous car to the 'ring I was going down the main straight at over 170mph on PS2s at 38-39psi hot and they were fine. 39 cold (which IIRC is the comfort pressure) will be several lbs more when moving at speed - I see no cause for concern there. _________________ Colin
Black 997 GT3 3.8 CS - Acquired for the 2012 season and beyond
Black 996 GT3 Mk2 - Gone, but will never be forgotten
911TEL Suzuka
Joined: 29 Oct 2007 Posts: 1158 Location: Inverness and Highlands
Its all pretty irrelevant system to me... depends what your load and max speed in the car is (and you're talking over 160mph so autobahn or track)... if you run higher pressure it will wear the centre of the tyres quicker, if you run lower pressure it will wear the outer edges of the tyre quicker... if you run the correct pressure to your load, you will wear evenly and have a consistent contact patch and grip.
+1 for this logic , that is my understanding and it's all basic stuff to me ....
I see the logic in two load settings but not the comfort description although it's probably the same thing in reality .....maybe a filler for the PCM menus was required ....! _________________ Cayman GT4 Carmine red .. at last it gets the goodies it should have....
997 Gen 2 Turbo S Basalt Black -BBS CHR, Kline inconel exhaust, Polished Bliss air freshener...
Cayenne S diesel 850 N/ m torque!!!! Jet black
SL 55 AMG Obsidian Black
Brompton S2L Black edition
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