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Old 02-20-2012, 06:36 PM   #43
jshaf
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when I put air in I usually put it to 38 and let it gradually go down to 33-35 then fill them again, usualy takes a few months. I don't sweat it too much just as long as it is about 33-34 and there all about the same!
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Old 03-20-2012, 01:15 AM   #44
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I set my 20 inch pirellis at 45 pounds cold. I want to decrease rolling resistance a bit since I do alot of highway driving during the week( got car last may, have 79,800 miles on it now :-( ) and during the weekends i make it a point to never waste a good corner with halfhearted driving. I dont recall how long the rear tires lasted, they did go first due to nail damage...but the front pirellis lasted for 57K miles of even wear. I offer that merely as anecdotal evidence and my personal preference. I wont argue against anyone who maintains that the sticker is always right.
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Old 03-23-2012, 08:51 AM   #45
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Checked mine today (yesterday got two new fromt tires unde warranty @ 917 miles total on car!) and all tires were at or just below 30psi from dealer. I bumped it up to 38 all the way around.

I know on my C5 vette if I over inflate the DIC let's you know... Max for vette to not get warning was 42psi. So I did 38 so when they warm up there is no DIC warning. Max on those tires is 51.
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Old 03-23-2012, 11:32 AM   #46
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It appears a great many are as crazy about tire pressure as I am. Here is my solution. the dash is close to the truth, but this thing is exactly right all the time. I swapped tires to 275's and 305's. Routinely run 37 lbs to keep my wider tires from cupping and the dash always sees it as a bit higher. I only use the dash to monitor the change as the tires warm up.
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Old 03-23-2012, 01:06 PM   #47
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I always set mine at 38 cold, every month or so I have to bump them back to 38.
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Old 08-27-2013, 12:50 PM   #48
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Leaving thread to much math!
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Old 08-27-2013, 04:37 PM   #49
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Follow the door placard. Max is just that Max not what you should run.
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Old 09-01-2013, 04:22 PM   #50
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Tire Air Pressure

I air at 36 lbs cold and use an Aircomp 3" 270* sweep tire gauge. It is really accurate and easy to air at 1/2 lb setings. When I go from 5,000 feet MSL here in CO mountains to a state less than 1000 feet I'll inflate to 38 pounds ahead of time otherwise I'll be low when I get to the destination. I have almost 20K on my factory Pirellis and they look like I'll get another 5K before changing. Then I'm going with Continnental Extreme DWS all season tires warranteed for 50K miles. Those tires I can rotate side to side.
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Old 11-30-2014, 07:46 AM   #51
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While the door sticker says 36 pounds for each tire, it might not be the optimal for balance (perhaps unless the car is bone stock, and even then perhaps tire tread depth/compound might play a role). Here's some old school but still relevant information (even has an IROC ):

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Old 11-30-2014, 09:17 AM   #52
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Quote:
Originally Posted by blackswan View Post
While the door sticker says 36 pounds for each tire, it might not be the optimal for balance (perhaps unless the car is bone stock, and even then perhaps tire tread depth/compound might play a role). Here's some old school but still relevant information (even has an IROC ):

That is some pretty cool stuff. I know for optimum traction in a competition setting that each pound of air is critical, but on a practicality scale I give this a score of 2. One thing you could do fairly easy is checking the sidewall roll over. The easiest advice was the art of listening to your tires.
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Old 04-20-2016, 10:16 AM   #53
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well, I start the morning at 33psi on the driveway and within about 2 miles it's up to 38psi all round ... OK?

P.S. no ... my driveway is not 2 miles long :-)
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Old 04-20-2016, 05:39 PM   #54
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Originally Posted by mikeyroche View Post
Not really BS at all. We use it at work all the time on the Aircraft. Nitrogen is far more superior then air
Only because the nitrogen you use is free of water. Dried out air would work just as well, since the gas law applies to all the gasses.
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