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18" tire pressure

This is a discussion on 18" tire pressure within the Wheels and Tires forums, part of the General Help category; What is the proper tire pressure for 18 inch tires? I have Goodyear 285/35/ZR18 tires on my 02 and don't ...

  1. #1
    Junior Member zinkota's Avatar
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    18" tire pressure

    What is the proper tire pressure for 18 inch tires? I have Goodyear 285/35/ZR18 tires on my 02 and don't really know what to inflate them to.

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    pewter
    2001 z28 lingenfelter 383

    28 rear 32-35 front

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    Member Speed Psychosis's Avatar
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    im pretty sure that should stay the same as stock. pressure isn't a volume.

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    Member ldanny's Avatar
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    look on the tire itself it should tell u max pressure just subtract like 5psi from that

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    Member Fearls1's Avatar
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    2002 T/A M6

    The less presure the better traction, however the more wear will occur. Your choice

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    Crazy Canuck ! Eugenio_SS's Avatar
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    pressure should not change with wheel size.
    Eugenio_SS
    almost stock triple-black 2000 SS convertible with 17x11s on all 4 w/ 315s at the track or on the street with 18x10.5s on all 4 w/ 315s: (1), (2)

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    Firebird Encyclopedia 9T8W66's Avatar
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    Quote Originally Posted by ldanny View Post
    look on the tire itself it should tell u max pressure just subtract like 5psi from that
    The Max pressure is what is needed to properly seat the tire on the rim.


    Like Eugenio said tire pressure shouldn't change with diferences of size.
    Look inside on the drivers door sticker and it will give you proper inflation pressure for your car.
    BTW I have 18's and mine are set 32 front 30 rear
    Craig
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    Nitrous Tuner LS2Tuner's Avatar
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    28-32psi will be fine.

    If you have any type of ball joint breaker pot holes like Chi Town area I would lean toward 28-30.
    Don't be afraid of the bottle!!! Be afraid of your tune!!!

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    Junior Member zinkota's Avatar
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    Thanks for all the answers guys. Just curious, why a higher pressure on the front than the rear?

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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by zinkota View Post
    Thanks for all the answers guys. Just curious, why a higher pressure on the front than the rear?
    Usually do to the point of trying to aid traction. I have Never ran my pressures that way back where your at do to the fact of crater sized pot holes. Thank God we don't have those issues out west here.

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    Member WARP211's Avatar
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    RED 35TH ANIVERSARY PKG
    2002 CAMARO SS 35th LE

    I do 30 psi all the way around.. on 18x9.5

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    Quote Originally Posted by zinkota View Post
    Thanks for all the answers guys. Just curious, why a higher pressure on the front than the rear?
    theres also a LOT more weight in the front on those tires.....very lil on the rear...and as was said traction

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