[s-cars] Your TT posting
LL - NY
larrycleung at gmail.com
Mon Apr 23 18:58:29 EDT 2007
I do that with my Saabaru in autocross, my stagger is about 4 psi, beyond
which the tail gets a bit too loose on turn exit in autocross. This is on
DOT-R rubber, stock alignment. FWIW, with the Saabaru, I run 38 front (lower
if the course is slick), 42 rear. Also, FWIW, it did work the other way when
I ran my A2 GTi in ES (quite a bit more successfully), front was still 38,
rear was 30.
LL - NY
On 4/23/07, colin cohen <ccohen5 at compuserve.com> wrote:
>
> Many thanks. The pressure suggested seems high but 45 is the recommended
> hot pressure for Hoosiers so I can use that as a place to start. I have a
> test session next month and will try it then. Seems that understeer would
> be promoted by high pressure though as it reduces the whee/ground aspect
> whereas you want to increase this to reduce understeer. Now if one left the
> fronts at say 30 and put 50 in the rear that would make more sense to me in
> promoting rotation?
>
> Common question I know but the Quattro piece sometimes makes it work the
> other way.
>
> Colin
> ----- Original Message -----
> From: Bill Noland
> To: colin cohen
> Sent: Monday, April 23, 2007 7:41 AM
> Subject: Re: Your TT posting
>
>
> Colin -
>
> Instructor claimed they kept adding pressure -- up to 50 lbs. (at the
> front, one would assume), until the understeer went away. I would imagine
> that is about the limit for the P Zero tires they were running. Of course,
> this was for a few laps of autocross, with cool off time in between. Don't
> think I'd go near that high for club racing, but you may want to experiment
> with some higher pressures. Good luck.
>
> Bill
> ----- Original Message -----
> From: colin cohen
> To: wenoland at pacbell.net
> Sent: Sunday, April 22, 2007 12:56 PM
> Subject: Your TT posting
>
>
> Do you have any idea what the Audi Experience/Panoz guys did with the
> tire pressures that was son "radical".
>
> I am part of the Istook racing team and we are running 2 TTs in SCCA
> T3 class and battling this issue. There are very few mods allowed and
> anything we could do to rotate these cars would be great. Currently we run
> about 30F and 28 rear.
>
> Anyone you could put me in contact with would also be helpful.
>
> Colin Cohen
> A4 (formerly the factory race car in 1997 Grand Am)
> TT (SCCA T3 Run Offs competitor)
> A6 V8
> SQ S/N 198
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>
More information about the S-CAR-List
mailing list