[TPR] C8 Z51 at NORC

Fri May 26 12:51:00 PDT 2023

Be nice if tire manufacturers would come up with a Z2R spec. Tire would
have to handle 220 on a shifting dyno for an hour.

On Fri, May 26, 2023, 12:48 PM DENNIS ANTENUCCI via TPR <
tpr at teampanteraracing.com> wrote:

> Great analysis Larry. Thanks for sharing with us!
>
> Notice my or Macs FYI….that no one including me is “recommending” any tire
> or air pressure recommendation.
>
> Yous Pays yo money and take yo chances although I will personally NEVER
> run anything less then a Y rated performance rated tire.
>
> Dennis
>
>
>
> Sent from my iPhone
>
> On May 26, 2023, at 11:28 AM, Larry Stock <larrys at panteraparts.com> wrote:
>
> 
>
> SSC is not a road handling or touring around town event, it is a straight
> line speed event. The theory is that higher pressures keep the tire rounder
> with less sidewall flex. Sidewall flex means more frictional heat buildup.
> Too much speed and heat leads to tire failure. With that in mind that over
> the past 20 years, the tires put on your cars today have about half the
> sidewall, thus probably less than half the sidewall flex. I found 37 to 40
> PSI in my /35 series tires gave me max adhesion verses my /50 series tires
> at 22 to 27 PSI for road course applications. So there is some truth in all
> that is being said, but try not to generalize the statements as one fits
> all vehicles or applications. Now let’s not talk truck tires
>
> Larry
>
>
>
> *From: *TPR <tpr-bounces at teampanteraracing.com> on behalf of DENNIS
> ANTENUCCI via TPR <tpr at teampanteraracing.com>
> *Reply-To: *DENNIS ANTENUCCI <teampantera at yahoo.com>
> *Date: *Friday, May 26, 2023 at 11:01 AM
> *To: *Bjoern Flesland <bflesland at gmail.com>
> *Cc: *team pantera racing <tpr at teampanteraracing.com>, Asa Jay Laughton <
> asajay at asajay.com>, David Carpenter <davecarp80138 at outlook.com>, Mark
> Darius Frank <markdariusfrank at gmail.com>, Paul Katchadourian <
> paul at katchenvironmental.com>, Russ Russell <russrussell854 at gmail.com>, <
> laurieferrari at aol.com>
> *Subject: *Re: [TPR] C8 Z51 at NORC
>
>
>
> Mac ran owners manual pressures which is exactly what the C8 Z51 sticker
> reecommends.
>
>
>
> My 25 year ORR history of running higher temps was based on a couple
> Goodyear and BFG tire engineers who recommended using higher inflation
> pressure based on tire failures they had data onin endurance events.
>
>
>
> While Eric (Tire guy) now a Pantera owner confirmed the official
> recommended tire pressures he also lost a tire last Sept. 😂😂
>
>
>
> Dawg
>
>
>
>
>
>
>
>
>
> Sent from my iPhone
>
>
>
> On May 26, 2023, at 10:49 AM, Bjoern Flesland <bflesland at gmail.com> wrote:
>
> 
>
> Hi Dennis,
>
> What does it say in your owners manual and on the car tire sticker
> regarding tire pressure?
>
> The cold pressure increases approx 4 psi when measured hot, immediately at
> finish line.
>
> I’ve seen a difference between 3 and 5 psi.
>
> It probably also depends on your speed, IMO.
>
> Cheers Bjoern 🏁
>
>
>
>
>
>
>
> fre. 26. mai 2023 kl. 19:35 skrev Mad Dog Antenucci <teampantera at yahoo.com
> >:
>
> Only concern I have is on tire pressures Mac ran...but those lower air
> pressures worked for him and may work for others. For 25+ years of ORR'ing
> I have always
>
> run  +/- 38-40 Fronts and 42-44 psi rears in the Pantera.  But the C8 is
> also a much heavier vehicle.
>
> Thoughts, questions  or comments?
>
>
>
> Dawg
>
>
>
>
>
> On Friday, May 26, 2023 at 10:16:25 AM PDT, Asa Jay Laughton <
> asajay at asajay.com> wrote:
>
>
>
>
>
> Nice!
>
>
>
> Asa  Jay
>
> Sent via radio waves
>
>
>
> On May 26, 2023, at 10:03, DENNIS ANTENUCCI <TEAMPANTERA at yahoo.com> wrote:
>
> 
>
> No Pantera content here…so only copying you few because you either have a
> vette or are considering one in the future.
>
>
>
> Malcolm “Mac” Johnson shared with me his C8’s vitals below at the NORC
> last Sunday.
>
>
>
> BTW, MAC BTW uses hand timer won 1st place. In fact Mac usually wins his
> class.
>
>
>
> Dennis
>
> Sent from my iPhone
>
>
> Begin forwarded message:
>
> *From:* Malcolm Johnson <mjohnson2003 at comcast.net>
> *Date:* May 25, 2023 at 11:17:00 PM PDT
> *To:* DENNIS ANTENUCCI <teampantera at yahoo.com>
> *Subject:* *C8 run*
>
> Well I must say I’m pleasantly surprised about my C8 cooling.   My C6Z
> always runs 195-210 while cruising to Vegas at 100 degrees and 80-90mph.
>    The new car runs 174-176 degrees at 100 outside temp.   At race speeds
> 140-162mph, all temps come up to the 180s.  I’m talking coolant, oil, and
> tranny.     The last 10 miles running higher rpm’s in a lower gear to
> lessen speed variation pushed temps to 190.    The only time I saw 200 was
> after slowing down to a crawl.   All in all, it runs cool across the board.
>     Regarding tires, I talked to Eric P and aired up the tires to about
> 33-34 cold.   At speed the tires were 39-40 pounds but the temp stayed
> green “Normal “.    No issues at all.
>
> Mac
>
> Sent from my iPhone
>
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