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YOUR RESEARCH944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Leading reported evidence
Check owner's book
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Performed · outcome unconfirmed · Original poster
I double checked the owner's book with information on line and they tally up!
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
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Leading evidence: 'Check owner's book' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'exageration)' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check owner's book' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
With 285/30/18s the recommended 44 wears out the centre, but I've just checked my PZeros after running 5 months on 40 rear and the centre is less worn than the edges (nothing to do with Bruntingthorpe!).
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Use but the car feels marginally heavier
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
as suspected all the comments told me that blowouts are much more likely and that the car must feel like porridge, thing is i dont know whether its my driving or the roads i use but the car feels marginally heavier on its feet but nothing really detrimental, the gain is in straight line tracking (weird), compliance and that feeling of initial/fingertip grip that was lacking before where it felt like i was bouncing from 1 tarmac dimple to the other (probably an exageration)
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
exageration)
Suggestion or failed attempt
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Identified cause
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
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Suspected cause
as suspected all the comments told me that blowouts are much more likely and that the car must feel like porridge, thing is i dont know whether its my driving or the roads i use but the car feels marginally heavier on its feet but nothing really detrimental, the gain is in straight line tracking (weird), compliance and that feeling of initial/fingertip grip that was lacking before where it felt like i was bouncing from 1 tarmac dimple to the other (probably an exageration)
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Recommend 44 wears out the centre
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
With 285/30/18s the recommended 44 wears out the centre, but I've just checked my PZeros after running 5 months on 40 rear and the centre is less worn than the edges (nothing to do with Bruntingthorpe!).
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Check pzeros
No successful repair reported for this finding.
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Reported fixes
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Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
With 285/30/18s the recommended 44 wears out the centre, but I've just checked my PZeros after running 5 months on 40 rear and the centre is less worn than the edges (nothing to do with Bruntingthorpe!).
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Recommend 44 wears out the centre
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
With 285/30/18s the recommended 44 wears out the centre, but I've just checked my PZeros after running 5 months on 40 rear and the centre is less worn than the edges (nothing to do with Bruntingthorpe!).
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Recommend tyre pressures
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Agree its very difficult to see the logic in Porsche recommended tyre pressures - on the 993 there are different rear pressures for each optional size.
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Run 5 months
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
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Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
With 285/30/18s the recommended 44 wears out the centre, but I've just checked my PZeros after running 5 months on 40 rear and the centre is less worn than the edges (nothing to do with Bruntingthorpe!).
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Use but the car feels marginally heavier
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
as suspected all the comments told me that blowouts are much more likely and that the car must feel like porridge, thing is i dont know whether its my driving or the roads i use but the car feels marginally heavier on its feet but nothing really detrimental, the gain is in straight line tracking (weird), compliance and that feeling of initial/fingertip grip that was lacking before where it felt like i was bouncing from 1 tarmac dimple to the other (probably an exageration)
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Reported and suspected causes (1)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
exageration)
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
as suspected all the comments told me that blowouts are much more likely and that the car must feel like porridge, thing is i dont know whether its my driving or the roads i use but the car feels marginally heavier on its feet but nothing really detrimental, the gain is in straight line tracking (weird), compliance and that feeling of initial/fingertip grip that was lacking before where it felt like i was bouncing from 1 tarmac dimple to the other (probably an exageration)
944 REAR TYRE PRESSURES - Page 1 - Porsche General - PistonHeads UK
Coverage and how to read this overview
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T022239Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have a 1990 S2 and its manual also states 44 psi for the rear. Discussion with other 944 owners shows that the 1989 cars and earlier states 36 rear yet 1990 and after it is 44 psi.
There has been much discussion on the 944 Titanic forum and the consensus is that 44 is too high and wears the centre of the tyre drastically. It was possibly raised to 44 psi by Porsche to cover themselves against high speed blowouts on the autobahn.
I have run at 36 all round for 50,000 miles with even wear.
>> Edited by diver944 on Wednesday 21st May 17:45
Much confusion on Porsche tyre pressures.
The 968 manual which quotes tyre sizes of 16" & 17" suggests 36 lb.
to show how silly it all is on 911 Carrera (not turbo) the tyre pressures are quoted at 36lb front 44lb rear.
this has been the same for 1990-2003,,,including 16,17&18" wheels 2& 4wd versions and obviously different weights of all the models..it doesn't strike me as an exact science.
I have a 1991 944S2 and my manual states 36psi, which I have always used and had no problems with, even at really high speed :-
www.pistonheads.com/gassing/topic.asp?t=38947&f=48&h=0&hw=speed
Andy
Thanks for the advice so far - 36psi sounds more like it. However, any high speed cruising on German Autobahns would probably justify raising this, as mentioned.
The main problem was that the supply at my local Esso garage (free air
) struggles to get the tyres up to 44psi!! New compressor required methinks.
Checked my bike tyres at Cheievely services at the weekend- 25psi and my little pressure gauge (which I measured against a recently calibrated air line at work) said 33psi!
So buy ya self a decent gauge & don't trust the garage forecourt ones.
Agree its very difficult to see the logic in Porsche recommended tyre pressures - on the 993 there are different rear pressures for each optional size. With 285/30/18s the recommended 44 wears out the centre, but I've just checked my PZeros after running 5 months on 40 rear and the centre is less worn than the edges (nothing to do with Bruntingthorpe!). So I don't think they are far off, although for track days you need to do hot pressures of about the same value rather than cold.
Cheers, Maurice
Do Not get a digital guage - problem with them is that the only take one reading (if you dont put the guage on absolutely right first time then the reading will +/-) as they dont continuously sample, a GOOD and i repeat GOOD analogue guage is much more accurate, and easier to work with.
Probably cost you around 50 to 70 notes from demon tweeks
ive posted a thread on the evo forum about tyre pressures, basically ive been experimenting on the 968 and set it down to 26 psi all round
as suspected all the comments told me that blowouts are much more likely and that the car must feel like porridge, thing is i dont know whether its my driving or the roads i use but the car feels marginally heavier on its feet but nothing really detrimental, the gain is in straight line tracking (weird), compliance and that feeling of initial/fingertip grip that was lacking before where it felt like i was bouncing from 1 tarmac dimple to the other (probably an exageration)
i suspect the rears should be a bit higher becuase a 255/40 has quite a high profile and that sidewall flexing is more prominent, will try a 28FR/30R setting and see if its a better compromise
>> Edited by CoupeMan on Thursday 22 May 16:52
Recently got a 944S2 and was amazed at the recommended rear tyre pressure - 44 psi
Thats more like motorcycle tyre pressures!! I double checked the owner's book with information on line and they tally up!
Anybody tried them with less to provide a slightly softer ride, maybe more grip?? The rears are 225/50 x 16". Even the recommend front pressures seem high to me, 36 psi. That's more than my other car, a Puegeot diesel.
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