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YOUR RESEARCHFactory tire pressures seem WAY to high...
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Run 32 and 35 all the time
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I run 32 and 35 all the time with no problems whatsoever and no bent wheels.
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Have I set a certain wear pattern in my tires already with 1000 miles on them at those ridiculous pressures?
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Suggestion
</font> <font size="2" face="Verdana,Tahoma,Helvetica">No, just go ahead and adjust your pressures.
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Porsche takes the effort to design and qualify special N-rated tires with subtle differences (or maybe not)which lead some here to swear they the only things we should use, but then they are off by 20+% in the recommended inflation pressures....?
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Suggestion · Original poster
My Boxster S was much more gentle riding at factory recommended pressure.
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Porsche takes the effort to design and qualify special N-rated tires with subtle differences (or maybe not)which lead some here to swear they the only things we should use, but then they are off by 20+% in the recommended inflation pressures....?
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I have 18" Michelin Pilot Sports and are precisely set at 36 front--44 Rear. The ride is SO harsh I am afraid of doing damage to car and jarring the interior loose. My Boxster S was much more gentle riding at factory recommended pressure. Any input?
Thanks
Hmmmm... Porsche takes the effort to design and qualify special N-rated tires with subtle differences (or maybe not)which lead some here to swear they the only things we should use, but then they are off by 20+% in the recommended inflation pressures....? I agree that the recommended pressures seem REALLY high, but they are the same as the ones Ruf recommends. I am perplexed, as always...
i run my c2 tires at the lower suggested pressure...have had no problems...and handling is minimally affected...if you are going to the track..go back to recc range...for in town and touring softer works and also helps keep down body squeaks from the harsh impacts
Keep in mind, though, that you're getting less protection for your 18" rims @ lower pressures. This is primarily why I keep mine near the factory recommended pressure...
stiles, good point. i hadn't thought about that reason. recommended pressure is so harsh for highway driving. anyone bend their rims on lower pressures?
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by paul wolken:
<strong>...if you are going to the track..go back to recc range...</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">The opposite. You should in fact reduce pressures at the track as tires get even hotter and hot pressures rise even more. I run 32 and 35 all the time with no problems whatsoever and no bent wheels.
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by SYMA:
<strong>I'll try those, but a question arises?? Have I set a certain wear pattern in my tires already with 1000 miles on them at those ridiculous pressures?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">No, just go ahead and adjust your pressures.
I'll echo what Viken says, I will run lower pressures at the track depending on track conditions, anywhere from 31/35 to 34/39 hot pressures. On the street I usually run the factory specs of 36/44, but often I will run 35/39 cold pressures. I don't think you'll have any trouble with these specs, FWIW the street GT3 spec ('99-00) is 35/39.
viken, kwc,
Are these lower tire pressures ok for 03 c4s, to make the ride a little gentler, which my wife always complain of.
Hope it doesn't affect the handling much, 'cause the break-in doesn't say anything about cornering, and most of my cornering brings out the flashing porsche stability management.
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by jeeva:
<strong>Are these lower tire pressures ok for 03 c4s, to make the ride a little gentler, which my wife always complain of.
Hope it doesn't affect the handling much, 'cause the break-in doesn't say anything about cornering, and most of my cornering brings out the flashing porsche stability management.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Yes. And, as I said above, the handling improves with lower pressures. This subject has been discussed more than extensively in the past on both the 996 and 993 forums. If you do a search for tire pressures, you'll find a lot of good info.
I've run our 2002 C2 (18" P Zero Rossos) at 36/44 since we took delivery in December 2001. We have 13,000 miles on her right now.
Wear pattrens for the rears suggest they're overinflated. Fronts look good.......
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Viken:
<strong>Yes, they are ridiculous. Try 32-34 front and 35-37 rear. You will be surprised at how much better the car will handle too.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">thanks for the info...do you usually take the measurement wen the tires are cold?
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by santicua:
<strong>...do you usually take the measurement wen the tires are cold?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Always. Unless you are at the track and are trying to reach a specific hot pressure for optimum grip.
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