[urq] Tire pressure for ice racing ?

[dgraber460 at aol.com]

I would vote for Nokian Hakkapeliitta snows.
We recently put a set of Nokian WR G2 all seasons on our 05 A6 and in a recent wintry blast with very slick streets the car behaved as if on tarmac both starting and stopping. I was truly amazed! The Hakkapeliitta dedicated snows (run on my URQ in winter) are incredible on snow _and_ ice without studs. In 3" of fresh powder I would pit that car against anything. I love to surprise the knobby tired Jeeps and SUVs.
Just my $.02. (and probably worth less)

Dennis
Denver


-----Original Message-----
From: Louis-Alain Richard <laraa at sympatico.ca>
To: vittorio at mybares.com
Cc: urq at audifans.com; quattro at audifans.com
Sent: Fri, Feb 12, 2010 7:35 am
Subject: Re: [urq] Tire pressure for ice racing ?


Thanks Vittorio,
 
So lower pressures are better on ice ? Interesting, since higher pressures are 
he way to go on tarmac… I’ll try that next week for sure.
 
Would you try to cure the inherent understeer by dropping the fronts more than 
he rears ? 
Or would you unlock the rear diff ?
 
About the different tires, the real snow tires are the Pirelli (very open tread) 
nd since they are not ice tires, they propose to stud them. Nice, the only 
rawbacks are bad dry-cold tarmac traction, and noise.
But the question is : can a studless expensive tire like the Michelin be any 
ood on ice ? Or at least, as good as the Pirelli ? I’m sure this Michelin won’t 
e any good in deep snow, the tread is not enough aggressive, but on ice, with 
ts multiple sipes and its very soft rubber, I guess it could work. What do you 
hink ?
 
Louis-Alain  
 
 
 
De : vittorio at mybares.com [mailto:vittorio at mybares.com] 
nvoyé : 12 février 2010 01:02
 : Louis-Alain Richard
c : urq at audifans.com; quattro at audifans.com
bjet : RE: Tire pressure for ice racing ?
 
On lake ice, I'll start at 26psi, and will typically endup in the low 
0's...depends on conditions.
 
But, yeah, regardless if you're on studs or super snow, drop the pressure and 
ou'll get better traction - but there's lots of variables:
-- how deep is the snow
-- how wide are the tires
-- what type of tread block are you running
-- temperature
-- etc...
 
-------- Original Message --------
ubject: Tire pressure for ice racing ?
rom: "Louis-Alain Richard" <laraa at sympatico.ca>
ate: Thu, February 11, 2010 6:25 pm
o: <urq at audifans.com>, <quattro at audifans.com>
Since I have at least 2 other outings this winter for some hot (cold ?) laps
n an ice track, I was wondering if I can improve traction by playing with
ire pressure and tire type.