24 PSI Pirellis?

Discussion in 'SRT Hellcat Wheels and Tires' started by VanishingPoint, Apr 15, 2015.

  1. VanishingPoint

    VanishingPoint Silver Member

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    In the article "Slicks on a Brick" they lower the psi on the Pirelli's to 24 lbs to increase traction.

    Has anyone tried this yet?
     
  2. Carnage

    Carnage SRT Hellcat Supercharged Moderator Staff Member Hellcat Car Club Gold Supporting Member HCC Charter Member

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    That's about 8 below recommended and I'm sure it would help but I haven't tried
     
  3. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    I run mine at 39 PSI on the street (summer tires). Traction is fine and I think it handles a bit better.

    At the limits with the go pedal down you will break traction no matter what. Personally I don't like soft tires (unless I'm at a drag strip).
     
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  4. DGatzby

    DGatzby Gold Member Hellcat Car Club HCC Charter Member Midwest Regional Pres.

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    Another thing if you drive around under inflated you could develop abnormal wear on the outside of the tires.
     
  5. VanishingPoint

    VanishingPoint Silver Member

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    The purpose was more traction at the strip, and I *think* it was an SRT tip passed along particular to this tire set.
    Was just curious if someone here had tried it...
     
  6. TxTorrnado

    TxTorrnado Rookie

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    Have you had any luck with the lower tire pressure yet? I took mine to the track with like 36psi and prob should have dropped them a bit.
    I think it would have helped.
     
  7. Dubya

    Dubya Silver Member

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    If I understand this correctly...it's a standard practice at the strip.
     
  8. VanishingPoint

    VanishingPoint Silver Member

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    No but it does maker sense.
     
  9. TxTorrnado

    TxTorrnado Rookie

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    If I remember correctly, I used to drop the pressure on my Micky Thompson ET Streets to like 12-14 psi at the track. It helped a lot. Of course, that was with a 15 inch wheel with a lot of sidewall. I could see the wrinkle marks in the tires after I ran. Not sure how the short sidewalls would act?
     
  10. VanishingPoint

    VanishingPoint Silver Member

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    A lot of modern performance tires are "rolled" so during hard cornering they still have grip as the tire rolls under the rim a bit. Reducing the air makes that roll part flatter, since you only desire max traction in a straight line.

    Modern street drag radials do this to, for some degree.
     
  11. Billet Hellcat

    Billet Hellcat Gold Member

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    I was at the drags last weekend and there was a guy in a skat pack spinning bad on the start line I gave him my pressure gauge dropped him down to 18-19lbs and he picked up a bunch on the start don't know what tires he was running but help on a prepped surface.
     

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