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HPDE tire question (colder temp)

 
Old 01-13-2019, 05:03 PM
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ChaosHokie
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Default HPDE tire question (colder temp)

I'm thinking about signing up for a HPDE event at Summit Point (FATT) in March... this'll be like my 2nd track day event ever...

Anyways, my 991.1 C2S currently has the Pirelli P0 tires on it, and since I'm still a noob in the novice group, I figure the stock street tires are good enough for typical HPDE. The question is since these tires aren't supposed to be used when it's in the 40's... and in March in VA/WV, the weather could easily be in the 40's, can I still use these tires? Will they get warm enough on the track over the course of the session, or do I scrap the idea of a March HPDE?

Thanks!

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Old 01-13-2019, 05:16 PM
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4pipes
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I wouldn’t especially if they’re approaching 6years old.
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Old 01-13-2019, 05:39 PM
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JSETarga
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I plan to use the P Zeros for a track day March 2nd at AMP in Atlanta. I suspect temps will be in 40s, but can never know for sure this far in advance.
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Old 01-13-2019, 05:52 PM
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adcampo
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I would expect it should be fine once they get up to temp during hard driving.

BTW - I live in Brambleton. Maybe lll check it out too.
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Old 01-13-2019, 06:43 PM
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PCA1983
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My recollection is the minimum recommended temperature is 40░F, not 40's. Is my memory wrong?
And they should heat up in a few laps. Agree with the 6 year old tire comment, especially if it was often parked in hot sun at sotto, in hot weather. If they were mostly part led in a cool garage, they are probably OK. A thorough tire inspection is always recommended, b4 a HPDE event, as is a brake fluid flush, of course.

Last edited by PCA1983; 01-13-2019 at 07:03 PM.
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Old 01-13-2019, 06:51 PM
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arter
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You can use them, just take it easy for several laps until the tires warm up.
Brake earlier than you normally do, etc.
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Old 01-13-2019, 07:49 PM
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murphyslaw1978
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Pirellis are known for being slippery in the cold. And they are old tires. If you plan on replacing them sooner or later, you might as well do it sooner and enjoy new tires for your HPDE.
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Old 01-13-2019, 08:07 PM
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Pep!RRRR
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PCA Potomac also has an event at the end of March you may want to consider. Register soon at Motorsports.reg if interested.
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Old 01-13-2019, 08:34 PM
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ChaosHokie
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The car is still pretty new-to-me, I've only had it for 2 months or so. The previous owner replaced the rears just before I purchased it, but the fronts may be OEM. The car was (and still is) mostly garage kept.

Originally Posted by Pep!RRRR View Post
PCA Potomac also has an event at the end of March you may want to consider. Register soon at Motorsports.reg if interested.
I probably should join PCA .. I'll take a look! Thanks!
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Old 01-13-2019, 08:54 PM
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911-TOUR
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P-Zeros on our cars are technically limited to 45F+

There are numerous cases of Compound cracking and delamination when used in low temps - call Tire Rack and ask :-) . I'd use something else below 50 degrees, but that's just me.

cheers!
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Old 01-13-2019, 09:07 PM
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jkfuel
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It's always easier to spend someone else's money, especially online :] Most summer tires are limited to 45F+ as stated above but just brake earlier/ give them time to heat up and you should be fine assuming you're not in the mid triple digits for too long.
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Old 01-13-2019, 09:11 PM
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ChaosHokie
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Originally Posted by jkfuel View Post
It's always easier to spend someone else's money, especially online :] Most summer tires are limited to 45F+ as stated above but just brake earlier/ give them time to heat up and you should be fine assuming you're not in the mid triple digits for too long.
Hah! The options are really to sign up for March or defer to the summer

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Old 01-13-2019, 09:12 PM
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Dry, in 40s, you should be able to get them up to temp as the track gets hotter throughout the day. Wet, probably not. I'd start with higher pressures than you usually do.

I'll probably gamble on a Chin event at NJMP in March myself - last week or so if the weather looks really bad I might just take the Sottozeros, otherwise I'll run the R888Rs.

Last edited by erko1905; 01-14-2019 at 12:18 AM.
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Old 01-13-2019, 09:16 PM
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jkfuel
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Originally Posted by ChaosHokie View Post
Hah! The options are really to sign up for March or defer to the summer
I'd sign up and make it work!
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Old 01-13-2019, 09:34 PM
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It’s a common misconception that one needs 1) to drive a Porsche and 2) be a member of PCA to sign up for PCA Potomac track events. The only requirement is that you have at least some previous track experience, which can include several Autocross events, or sign up initially for our High Performance Driving Clinic (also in March), which serves as a basic introduction. Prior to each HPDE cars must be tech inspected. We have a free “tech session” at a local shop one or two weeks before the event. These are enjoyable even if you don’t attend the track event.
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