What psi should my tires be at?

Discussion in 'OT Driven' started by Nismo4090, Jul 25, 2007.

  1. Nismo4090

    Nismo4090 Back in Black

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    Not factory for vehicle.

    225/45/18s Continental ContiExtreme Contacts on G35 sedan.

    Not sure what the psi should be?
     
  2. 10psi.

    Seriously though. What are you doing with the car? Road race, autocross, rock crawling? Tire pressures depend on what you're doing.
     
  3. Nismo4090

    Nismo4090 Back in Black

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    I am just driving the car. I lost the info I had on proper tire pressure :(
     
  4. You'd probably be safe with anywhere from 30-35psi. If you're just cruising around it doesn't really matter. You can take readings of your tire temperatures with a pyrometer if you have one and set th pressure to whatever gives you even temperatures as measured on each side of the tread and the middle. A temperature spread of 10 or so degrees is fine.
     
  5. Nismo4090

    Nismo4090 Back in Black

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    35 I believe is where I had it. I wasnt sure
     
  6. huntz0r

    huntz0r New Member

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    Use the number quoted by the factory, or you can add 2-3 pounds if you think you drive really aggressive (just watch the tread wear pattern)

    You don't want to run some autocross-style 45 psi for the street, remember you still drive in straight lines a whole lot of the time.
     
  7. k624ash

    k624ash New Member

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    isnt it written on the tire?
     
  8. angryhero46

    angryhero46 New Member

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    i had my kumho 18s at like 40psi.It will say on the tire the max psi
     
  9. 5Gen_Prelude

    5Gen_Prelude There might not be an "I" in the word "Team", but

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    Only the max psi is written on the tire. The actual tire pressure is dependant on the car. 35 is probably bang on for that car and tire size.
     
  10. rkddb

    rkddb Masturbation is on my mind OT Supporter

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    the same psi your turbo runs at
     
  11. heyskippy

    heyskippy New Member

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    Look inside the drivers door, there will be a label with the recommended pressures for your car. I highly recommend you use those.
     

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