'89 Deville tire pressures?
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, '89 Deville tire pressures? in Past Cadillac Vehicle Discussion; Hi all, I have recently purchased an '89 Deville in great condition. It pulls a bit to the right, so ...
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    caramihn is offline Cadillac Owners Member
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    '89 Deville tire pressures?

    Hi all,

    I have recently purchased an '89 Deville in great condition. It pulls a bit to the right, so I wanted to make sure all the tires are at their correct pressures. The sticker on the door is missing, can anyone kindly tell me what the recommended pressures are for all four wheels?

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    Discount Tire's Avatar
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    Re: '89 Deville tire pressures?

    The O.E. tire pressure for the O.E. tires for your 89 would be 30 PSI.

    What size tires are on the car? If you're running something other than O.E. sizing then the pressure may need to be adjusted depending on the load index and the construction of the tire.
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    91FleetwoodCoupe's Avatar
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    Re: '89 Deville tire pressures?

    They call for 30 but being a big heavy car I do 35.

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    caramihn is offline Cadillac Owners Member
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    Re: '89 Deville tire pressures?

    Quote Originally Posted by Discount Tire View Post
    What size tires are on the car?
    215/70R15, I believe these are OE. Thank you for your quick reply

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    Re: '89 Deville tire pressures?

    I show 205/70R-15 as O.E. sizing - which brand and tire model is installed on the vehicle?
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    basscatt's Avatar
    basscatt is online now Master of the Dark Art of Diagnostics
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    Re: '89 Deville tire pressures?

    Quote Originally Posted by 91FleetwoodCoupe View Post
    They call for 30 but being a big heavy car I do 35.
    ========================
    you gain nothing by over inflating the tires -
    you MIGHT actually shorten the life of the tires -
    not to mention giving a harsher ride -
    1969byrdman likes this.

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    1969byrdman's Avatar
    1969byrdman is online now US Coast Guard: Semper Paratus
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    Re: '89 Deville tire pressures?

    Quote Originally Posted by basscatt View Post
    ========================
    you gain nothing by over inflating the tires -
    you MIGHT actually shorten the life of the tires -
    not to mention giving a harsher ride -
    yup. you'll have premature wear in the middle of the tread.

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    caramihn is offline Cadillac Owners Member
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    Re: '89 Deville tire pressures?

    Quote Originally Posted by Discount Tire View Post
    I show 205/70R-15 as O.E. sizing - which brand and tire model is installed on the vehicle?
    You're right, I guess the previous owner put slightly wider tires. They're Yoko's in the front and Goodyear's in the back. I have them at 32 psi currently

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    Submariner409 is offline If it won't run, install a sound system
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    Re: '89 Deville tire pressures?

    Tire tread wear diagnosis..................

    The manufacturer's recommended cold inflation pressures - on the driver's door sticker and/or owner's manual - are developed for THAT car/tire OEM specification. Increasing pressure by more than 1 - 2 psi only contributes to accelerated wear - it has NO effect on a "heavy" car or weight carrying abilities, but contributes to a harsher ride and increases suspension over-reaction to road surface faults.
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