What's your tire pressure at?
10-06-2017, 11:43 AM
#17
For spirited driving, is it recommended to keep the tires pumped higher than comfort level? Or lower better?
Also, for longevity, does a higher load (say 36/39) yield any difference in overall tread wear from comfort load?
Also, for longevity, does a higher load (say 36/39) yield any difference in overall tread wear from comfort load?
10-06-2017, 11:58 AM
#18
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2) Yes. Better tread life (more miles and more even) and better MPGs.
You also don't really want to see a spread between front and rear much above 4-6 PSI.
10-06-2017, 11:59 AM
#19
Drifting
If you're driving your car hard the tires will get hot and the pressures will increase... at a track day for example I'll normally drop my tires cold by 3-5 PSI to prevent them from overheating.
That said if you're talking about street use running at comfort levels (31/34) will be fine as it is unlikely you'll get them to where they would be on a track.
That said if you're talking about street use running at comfort levels (31/34) will be fine as it is unlikely you'll get them to where they would be on a track.
10-06-2017, 12:24 PM
#20
Makes sense that more pressure (to a degree) will prolong tread life and of course improve MPG (this baby drinks pretty heavily on these congested urban roads regardless).
10-06-2017, 12:29 PM
#21
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10-06-2017, 12:40 PM
#22
Three Wheelin'
If you're driving your car hard the tires will get hot and the pressures will increase... at a track day for example I'll normally drop my tires cold by 3-5 PSI to prevent them from overheating.
That said if you're talking about street use running at comfort levels (31/34) will be fine as it is unlikely you'll get them to where they would be on a track.
That said if you're talking about street use running at comfort levels (31/34) will be fine as it is unlikely you'll get them to where they would be on a track.
10-06-2017, 01:15 PM
#23
Advanced
31/34. Suits me fine in the city, suits me fine at autocross and suits me fine on the track (after a few warm up laps).
Plus or minus a few psi, the only reason to have much more is if you are running on the autobahn.
Plus or minus a few psi, the only reason to have much more is if you are running on the autobahn.
10-06-2017, 01:59 PM
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Love all the information but just need to know if I should be right or left handed to follow your recommendations. I am totally confused by the recommendations. My tires on my GTS are about 0.3 at the rear and 0.5-0.6 at the front with 16K miles. What would you suggest I do? I do not claim to be a cognezenti. However I love the input to this very ignorant 73 year old man from these very knowledgable people.
10-06-2017, 02:15 PM
#26
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10-06-2017, 02:28 PM
#28
Drifting
Love all the information but just need to know if I should be right or left handed to follow your recommendations. I am totally confused by the recommendations. My tires on my GTS are about 0.3 at the rear and 0.5-0.6 at the front with 16K miles. What would you suggest I do? I do not claim to be a cognezenti. However I love the input to this very ignorant 73 year old man from these very knowledgable people.
Are you sure the readings weren't 2.3 and 2.5 bar? Either way suggest you change the measurement from bar to PSI and see what it says.
10-06-2017, 02:42 PM
#29
Three Wheelin'
https://www.edmunds.com/porsche/911/...-pressure.html
From the article....
From the article....
A quick two-hour call to Porsche cleared up all of these different options.
First things first: The additional window sticker is a perfectly legal move and their compliance department has confirmed that multiple factory tire pressure settings will not set them up for any liability. (See: Ford / Firestone.)
Next up, full load. Unlike most brands, Porsche's recommended tire pressure setting isn't there as some sort of compromise. Instead, the 36/44 setting is for running with full fuel, the full 660 pounds of cargo/passengers AT TOP SPEED. This is a max-duty setting that Porsche's putting out there just in case.
Further, the car wasn't engineered with that setting in mind. According to Porsche, the chassis engineers develop the cars according to the comfort, part-load tire pressure (on 19-inch wheels, but we'll get to that later) which for this car is 31 front, 34 rear. Oh, and Porsche says this tire pressure will make the car handle better, to boot.
First things first: The additional window sticker is a perfectly legal move and their compliance department has confirmed that multiple factory tire pressure settings will not set them up for any liability. (See: Ford / Firestone.)
Next up, full load. Unlike most brands, Porsche's recommended tire pressure setting isn't there as some sort of compromise. Instead, the 36/44 setting is for running with full fuel, the full 660 pounds of cargo/passengers AT TOP SPEED. This is a max-duty setting that Porsche's putting out there just in case.
Further, the car wasn't engineered with that setting in mind. According to Porsche, the chassis engineers develop the cars according to the comfort, part-load tire pressure (on 19-inch wheels, but we'll get to that later) which for this car is 31 front, 34 rear. Oh, and Porsche says this tire pressure will make the car handle better, to boot.
10-06-2017, 07:41 PM
#30
I'm actually very confused with this tire pressure discussion.
My dealer recommends the pressures that Porsche puts on the sticker in the driver's door jam.
On my 2017 C4S, the numbers are 35psi front/45psi rear.
Is this something I should ignore and bring the pressure down?
My tires are at exactly the listed pressures
My dealer recommends the pressures that Porsche puts on the sticker in the driver's door jam.
On my 2017 C4S, the numbers are 35psi front/45psi rear.
Is this something I should ignore and bring the pressure down?
My tires are at exactly the listed pressures