Ferrari Mailing List: Re: Aldo and Nitrogen

[clyderomero (clyderomero]

They dissconnected the senors
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-----Original Message-----
From: "Steve Jenkins" <steve [at] stevejenkins.com>

Date: Wed, 7 Jan 2009 08:35:05 
To: clyde<clyderomero [at] worldnet.att.net>
Cc: The FerrariList<ferrari [at] ferrarilist.com>
Subject: Re: [Ferrari] Aldo and Nitrogen


I use nitrogen in my Maserati tires for only one reason: if I don't, the
tire pressure monitoring system ALWAYS gives me warnings any time it gets
cold outside. With nitrogen, the pressures seem to be less affected by temp,
and I don't have to hit the "ignore" button. :)

I was having the same problems with my Hummer at my Utah house (where it
gets really cold during the winters). I kept getting tire pressure warnings.
I'd check manually, and everything seemed fine. I took it in twice to the
dealer and they replaced the TPMS stems under warranty. On a whim, and
scrambling for any solution, I finally went to Firestone and had them put
nitrogen in. No warnings since. :)

SJ

-----Original Message-----
From: George P. [mailto:ygpz4re [at] hotmail.com] 
Sent: Wednesday, January 07, 2009 4:58 AM
To: Steve Jenkins
Cc: The FerrariList
Subject: [Ferrari] Aldo and Nitrogen


Don't know if Aldo will remember me, but back when Tic-Tac was one of
Ferrari's F1 team sponsors, Aldo sent us a big box full of "Ferrari
Tic-Tac"s.  My wife, as FoW's hospitality hostess back in 2000, gave them
out with our snacks at the USGP.  Some of you may have actually gotten a box
or two (I still have several of mine!).  The european tic-tacs were much
better than the US ones, IMHO, especially the orange flavored ones.  Ah, the
memories.....
 
Nitrogen in tires....  Yes, dry air also works, but what the Pirelli and
Dunlop guys told me (back when I was managing FoW's race tires) was that
nitrogen was more stable and predictable in its pressure changes as tire
temps changed.  That, and its "dryness" is why racers use it.  Our race
engineer in the GT program (who is now an engineer with the Pratt & Miller
Corvette team - hard to argue with that kind of success!) told me that same
thing, and also that, with every 10* of ambient temperature change, you get
a corresponding 1 pound change in tire pressure.  [I think that was the
factor - 10* = 1 pound - but I'd have to dig through old notes to be
sure....  I do know that there was a constant factor of change.]
 
I remember reading some discussion somewhere about using N in street tires.
Frankly, I seriously doubt anyone here in the States would ever drive their
street tires hard enough to make it worthwhile.  Ok, there's a few of you
out there, but for 99.99999999999999999999999999999999999999999999999999% of
us, traffic laws and conditions simply don't allow it.
 
My 2 euro for today.
 
gp
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