track tire pressure for Michelin Super Sports
03-21-2018, 10:12 AM
#1
Rennlist Member
Thread Starter
track tire pressure for Michelin Super Sports
The unthinkable has happened: Living in Northern CA I only book trackdays where it's not going to rain. And that is mid-March to mid-October
I am driving Thunderhill this weekend and thanks to climate change it looks like it will be wet. I don't trailer, meaning for the first time in many years I'll be tracking my Michelin Super Sports.
Does anyone have an idea what pressure they should be run on the track?
I am driving Thunderhill this weekend and thanks to climate change it looks like it will be wet. I don't trailer, meaning for the first time in many years I'll be tracking my Michelin Super Sports.
Does anyone have an idea what pressure they should be run on the track?
03-21-2018, 10:57 AM
#2
Rennlist Member
~36-38 hot. In rain, you will not gain as much PSI from cold to hot. And I hope the "thanks to climate change" based on the weather one weekend near where you live was in jest.
03-21-2018, 11:27 AM
#3
Rennlist Member
Thread Starter
so maybe factor in 2-4 PSI increase, meaning starting at 34?
Actually seriously (I am not a scientist, I just know what I see): until maybe 5 years ago the 2nd half of March was absolutely dry. Booking a track day in the 2nd half of March: Zero risk for a rained out track day.
Since the last couple of years the rainy season has extended into end of March / beginning of April.
Not really complaining, as we need all the rain we can get here and the winter was super-dry, so with the late season of rain storms, we might not have a drought this summer.
And funnily enough I'm almost looking forward to a wet track day, as this will be a good chance to get better at driving at the limits of traction.
03-21-2018, 11:27 AM
#4
Rennlist Member
If you have to start low in order to get to your target (I agree with the 36-38 hot) bring them up to temp / pressure slowly and be real careful in the turns (generate your heat in the brake zones). These tires have a soft sidewall and will roll in a turn while at low pressure which will destroy the outside shoulder. Don't ask how I learned this 
I run these tires in the rain and they are great, hanging with folks running Hoosier Rain tires
I run these tires in the rain and they are great, hanging with folks running Hoosier Rain tires
03-21-2018, 11:32 AM
#5
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I start at 27/28 cold and they get to 35 hot and that's exactly where they perform best for me. (On a dry track).
They are up to temp in a couple laps, depending on the track.
I have them on a 2014 981S.
They are up to temp in a couple laps, depending on the track.
I have them on a 2014 981S.
03-21-2018, 12:16 PM
#6
Rennlist Member
Thanks.
so maybe factor in 2-4 PSI increase, meaning starting at 34?
Actually seriously (I am not a scientist, I just know what I see): until maybe 5 years ago the 2nd half of March was absolutely dry. Booking a track day in the 2nd half of March: Zero risk for a rained out track day.
Since the last couple of years the rainy season has extended into end of March / beginning of April.
Not really complaining, as we need all the rain we can get here and the winter was super-dry, so with the late season of rain storms, we might not have a drought this summer.
And funnily enough I'm almost looking forward to a wet track day, as this will be a good chance to get better at driving at the limits of traction.
so maybe factor in 2-4 PSI increase, meaning starting at 34?
Actually seriously (I am not a scientist, I just know what I see): until maybe 5 years ago the 2nd half of March was absolutely dry. Booking a track day in the 2nd half of March: Zero risk for a rained out track day.
Since the last couple of years the rainy season has extended into end of March / beginning of April.
Not really complaining, as we need all the rain we can get here and the winter was super-dry, so with the late season of rain storms, we might not have a drought this summer.
And funnily enough I'm almost looking forward to a wet track day, as this will be a good chance to get better at driving at the limits of traction.
03-21-2018, 12:24 PM
#7
for Cup 2's ROAD RACING (psi)Front: 25 cold; 32 hot rear: 28 cold; 36 hot note:if your road-racing hot pressures are too high, start with slightly lower cold pressures.AUTOCROSS (slalom)32–36 psi hot (front/rear)note: Though autocross hot target pressures are the same as those for road racing, you may need to start at a higher cold inflation pressure to compensate for the lower pressure gains in autocross racing.ROAD oe pressures (consult your vehicle owner’s manual.)RAIN For both autocross and road racing, you may need to increase tire pressure 6 – 10 psi over cold, dry pressures.Vehicle and driving style are important factors, so some adjust from there
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03-21-2018, 01:58 PM
#9
Rennlist Member
Start 26-28 cold and go from there.
Also, I suggest you familiarize yourself with El Niño/La Nina cycles, which have preceded mankind by only about a billion years
And normal variations of solar activity, which have been around even longer
Also, I suggest you familiarize yourself with El Niño/La Nina cycles, which have preceded mankind by only about a billion years
And normal variations of solar activity, which have been around even longer
03-21-2018, 05:57 PM
#11
Rennlist Member
The unthinkable has happened: Living in Northern CA I only book trackdays where it's not going to rain. And that is mid-March to mid-October
I am driving Thunderhill this weekend and thanks to climate change it looks like it will be wet. I don't trailer, meaning for the first time in many years I'll be tracking my Michelin Super Sports.
Does anyone have an idea what pressure they should be run on the track?
I am driving Thunderhill this weekend and thanks to climate change it looks like it will be wet. I don't trailer, meaning for the first time in many years I'll be tracking my Michelin Super Sports.
Does anyone have an idea what pressure they should be run on the track?
26 -28 cold is always a good , safe place to start.
