Attn: 981 Owners with Pilot Sport 4S Tire Pressures
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Thread: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

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    I know the door panel says 33 PSI on all fours (20 inch), but what is the consensus with everyone on comfort mode tire pressure?

    I had the old P Zeros at 29/30 because they were so harsh
    Last edited by Kaduku; 03-30-2019 at 05:11 PM.

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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    33-35 the Michelin’s ride much better.

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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    Of course lowering tire pressure will provide a more comfortable ride, but at a price. The recommended tire pressure will provide optimum street performance and tire longevity. Lowering the tire pressure will likely cause premature tire wear to the outside edges of the tires.

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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    Quote Originally Posted by fast1 View Post
    Of course lowering tire pressure will provide a more comfortable ride, but at a price. The recommended tire pressure will provide optimum street performance and tire longevity. Lowering the tire pressure will likely cause premature tire wear to the outside edges of the tires.
    Based on your actual experience or generalizations? My experience with the Pirellis was the opposite of this - I was getting extraordinary wear on them with pressure at 33, lowered to 29-30 on second set of rears and had better results and 16K instead of 12K. I've got the new PS4S at the same ~30# settings, but of course with only 1K or less no real feedback based on experience yet.
    Last edited by Georgeair; 04-01-2019 at 06:44 AM.
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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    Quote Originally Posted by Georgeair View Post
    Based on your actual experience or generalizations? My experience with the Pirellis was the opposite of this - I was getting extraordinary wear on them with pressure at 33, lowered to 29-30 on second set of rears and had better results and 16K instead of 12K. I've got the new PS4S at the same ~30# settings, but of course with only 1K or less no real feedback based on experience yet.
    Just generic, not empirical since I always run at recommended tire pressures on the street.

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    I'm trying 30 all around. But I need to drive it more on the crap SF roads nd see how it rides.
    Last edited by Kaduku; 04-01-2019 at 08:55 AM.

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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    19’s on my ‘14 981CS. Swapped out original F1s for 4S a few months ago.

    I set to +1 psi above the door jamb sticker F/R.


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    I guess it all depends where you live. The OEM Pirellis weren't bad when I had nice roads but there were few of those around.

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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    I always tried to go up 1 or 2 psi more than what Porsche recommended. Done it with all my cars and have always had great tire life in my other cars. Only when I track I drop the PSI after a hot session. I have had 4 track days and 11.5k miles so far. My rears are shot. The compound doesn't grip anymore unless really warmed up. It does have tread though. It's fun to slide the car out of corners in normal driving but yeah it's time I got rid of that rubber.

    If you are getting unusual wear with a few psi of difference I highly recommend getting an alignment/balance done. In normal driving the tires do warm up fast and I can see the PSIs go up by 3 at least.

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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    For street driving I run comfort mode, 30 psi, on my 20". The difference in total milage on a tire between 30 and 33 psi is negligible in my opinion. Total milage is far more dependent on your driving style. Do you drive like your mad at the car all the time then milage will of course be lower! lol

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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    Odd. I'm making the switch to PS4S this weekend. At 33k miles, I'm on my second set of front P Zero's and original Rears. The new fronts only have 10k miles on them and are in worse condition than the rears.

    I like to keep the tire pressure at an even 32 or 33, but find a constant adjustment is necessary. I don't know if I have a leak or what, but the cold pressure often dips down to 28 or so.

    This of you with the Michelins... do they last longer than the P Zeros?
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    Re: Attn: 981 Owners with Pilot Sport 4S Tire Pressures

    Quote Originally Posted by Laaaaaaaaapis981 View Post
    Odd. I'm making the switch to PS4S this weekend. At 33k miles, I'm on my second set of front P Zero's and original Rears. The new fronts only have 10k miles on them and are in worse condition than the rears.

    I like to keep the tire pressure at an even 32 or 33, but find a constant adjustment is necessary. I don't know if I have a leak or what, but the cold pressure often dips down to 28 or so.

    This of you with the Michelins... do they last longer than the P Zeros?




    Michelins will last longer.

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