Air pressure for cup2 tires

[Tones GT]

What air pressure is everyone running on the cup2's for the street on the HP cars?

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[Cobrajet70]

stock 33 psi. you would air them down for track use. The Mach 1 insert in your owner manual has those recommended settings.

 

[ChemEng44]

What air pressure is everyone running on the cup2's for the street on the HP cars?

I’ve settled in at 30psi cold front, 28psi cold rear on street, I really only drive the car on the street on warm sunny days so the road has some temp in it.

 

[Tones GT]

Trying the stock 33 psi for now in all tires. Dealer had my tires set at 38 psi. I am getting some serious tramlining from the fronts and the damn lane keeping assist vibration from the steering wheel keeps going off. I tried to shut it off in the settings but it keeps doing it! It's driving me nuts. Dealer was no help.

 

[DopamineQuest]

Trying the stock 33 psi for now in all tires. Dealer had my tires set at 38 psi. I am getting some serious tramlining from the fronts and the damn lane keeping assist vibration from the steering wheel keeps going off. I tried to shut it off in the settings but it keeps doing it! It's driving me nuts. Dealer was no help.

Is there not just a button on the end of the left turn signal that just turns the lane assist completely off? I did that shit instantly when I bought my 2020 GT.

 

[azshelby350]

I only have experience with a 350, but assuming it’s the same FP spec tire 32lbs all around works well for the street. On the track try starting at 28-29 and letting them warm to 32-33 optimal. These tires start going away when temps expand pressure to 34-35.

 

[shogun32]

These tires start going away when temps expand pressure to 34-35.

right, but has anyone run them 32 cold at the track?

 

[Bitten in '69]

If the car is new to you, and you have not done so, have your alignment checked by a good shop. My 350 tramlined heavily until I had it done. A front and rear tire were beyond the factory settings. And, IMO the toe settings from the factory are too much for street use.

 

[Atlas1]

Trying the stock 33 psi for now in all tires. Dealer had my tires set at 38 psi. I am getting some serious tramlining from the fronts and the damn lane keeping assist vibration from the steering wheel keeps going off. I tried to shut it off in the settings but it keeps doing it! It's driving me nuts. Dealer was no help.

38 psi?! Damn

 

[Tones GT]

Is there not just a button on the end of the left turn signal that just turns the lane assist completely off? I did that shit instantly when I bought my 2020 GT.

Thanks! I will check. I didn't know there is a button. Dealer obliviously didn't know about it either! Tried to get an alignment but they could not get it on their lift, with the front splitter so low to the ground!

 

[azshelby350]

right, but has anyone run them 32 cold at the track?

When I first started tracking my 350 and soon discovered that starting at 32 cold means you get about 2.5 laps (track dependent) before driving on oil slicks. Even starting at 28 (ambient temp dependent) only gets you through about 15min of a 20min session. That being said, running lots of camber helps (-2.5 min).

 

[Schwerin]

38 psi?! Damn

My dealer does the same to my Bullitt every time I take it for oil/inspection. No sure why, maybe encourage hypermiling lol

 

[Schwerin]

Thanks! I will check. I didn't know there is a button. Dealer obliviously didn't know about it either! Tried to get an alignment but they could not get it on their lift, with the front splitter so low to the ground!

A 2 or 4pt k-member brace from BMR or Steeda also helps with tramming a bit.

 

[murick]

Thanks! I will check. I didn't know there is a button. Dealer obliviously didn't know about it either!

I would not expect it there either, but my dealer showed me the button and how to turn it off before I left them and I never felt a need to turn it on back again. Now, I have to figure out how to turn off the distance warning because so far I had only false alarms

 

[NavsENG]

On those tires I would be going out around 24-27 cold on track. Depending on ambient and how they react to heat. 32-34 hot is usually a good number.

32 cold is way too much

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