Alternative to my factory tire size?
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Suspension, Brakes and Tires Discussion, Alternative to my factory tire size? in Item Specific Cadillac Discussion; I own a 96 Sedan Deville and wanted to know if anyone knew if it was safe to put a ...
  1. #1
    TopNotch2k is offline Cadillac Owners Member
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    Alternative to my factory tire size?

    I own a 96 Sedan Deville and wanted to know if anyone knew if it was safe to put a set of 215/55zr 16 on vs. the recommended factory 255/60 16 tire size. Thanks for anyone's times who chooses to shed some insight

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Alternative to my factory tire size?

    Get into www.tirerack.com and compare your stock tire size (driver's door sticker) with other desired sizes. You need to keep OD (outside diameter) within 0.3" of stock or speedo and engine/transmission calibration errors creep in. I think your stock tires have an OD of about 27.2".

    A 96 base Deville is speed limited to 112 mph. There is absolutely no sense in putting expensive Z-tires on the car.

    Look into swapping to 17" or 18" Deville rims - pictures in www.wheelcollision.com, click the little pictures. As long as you follow the OD recommendations you're OK. (Section and treadwidth come into play for rubbing problems due to tire sizing, NOT wheel sizing.) Technically, you could run 27" wheels - no tires. The ride would be a bit hard ..........

    A 215/55 section
    tire is so far from a 255/60 that it isn't even funny.

  4. #3
    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
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    Re: Alternative to my factory tire size?

    Quote Originally Posted by TopNotch2k View Post
    I own a 96 Sedan Deville and wanted to know if anyone knew if it was safe to put a set of 215/55zr 16 on vs. the recommended factory 255/60 16 tire size. Thanks for anyone's times who chooses to shed some insight
    ------------------------------------
    the short answer is NO - it's too small -

    the correct "factory" size is 225/60/16 - NOT 255/60/16 -

    a 215/55/16 is MUCH smaller -

    diameter -
    26.63 - compared to 25.31 -

    sidewall height - in inches -
    5.31 - compared to 4.66

    revolutions per mile -
    757.35 - compared to 796.81 -

    speedometer error -

    speedo reads 20 - actual speed 19 -

    speedo reads 60 - actual speed 57 -

    ----------------------

    that is a real oddball size -
    and they are worthless for your Deville -


  5. #4
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    I have to ask... Why?

  6. #5
    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
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    Re: Alternative to my factory tire size?

    Quote Originally Posted by MoistCabbage View Post
    I have to ask... Why?
    ----------------------------
    my guess - either FREE - or DIRT CHEAP -

  7. #6
    TopNotch2k is offline Cadillac Owners Member
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    Re: Alternative to my factory tire size?

    I appreciate everyone who took some time out to reply with their opinions. To make a long story short Yes Dirt Cheap! I have a classmate who started a tire co (logistically anyways) and alternate size suggested where the only size 16s that were in the order. The reason why I asked is because he has all season tires and I most def need to grab a new set before winter. He said I could have the 16s for a little more than $300 so I felt like it was worth some research. Again I appreciate all the posts and knowledge.

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