2006 sts tires
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Cadillac STS Forum - 2005 through 2012 Discussion, 2006 sts tires in Past Cadillac Vehicle Discussion; Now I get this is purely opinion, but based on what you own, what's the best tire size and why. ...
  1. #1
    idkwhothatis123 is offline Cadillac Owners Member
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    2006 sts tires for after market rims

    Now I get this is purely opinion, but based on what you own, what's the best tire size and why. I'm looking for 20's or 22's and I don't want to sacrifice a whole lot of smoothness on the drive. I appreciate the help folks.

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    EChas3's Avatar
    EChas3 is offline Cadillac Owners Master
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    Re: 2006 sts tires

    If you have MRC, 22's or even 20's will be very sensitive to the slightest imperfections in the road.

    It's your car. Enjoy!

  4. #3
    idkwhothatis123 is offline Cadillac Owners Member
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    Quote Originally Posted by EChas3 View Post
    If you have MRC, 22's or even 20's will be very sensitive to the slightest imperfections in the road.

    It's your car. Enjoy!
    Out of curiosity, how can I tell if I do have that? And I assume you mean magnetic ride control by mrc right?

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    Ludacrisvp's Avatar
    Ludacrisvp is online now Cadillac Owners Connoisseur
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    Yeah. Open the hood, and look at the top of the strut towers and you will see if there's wires attached to the top of them. Wires = MRC. You may have to remove the plastic beauty panels to see this. Or in the trunk under the spare tire cover look at the RPO list for F55 this is the option code for the MRC.

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    idkwhothatis123 is offline Cadillac Owners Member
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    Quote Originally Posted by Ludacrisvp View Post
    Yeah. Open the hood, and look at the top of the strut towers and you will see if there's wires attached to the top of them. Wires = MRC. You may have to remove the plastic beauty panels to see this. Or in the trunk under the spare tire cover look at the RPO list for F55 this is the option code for the MRC.
    I appreciate the help man. If I do have this feature, would I be able to lower my car? Sorry for the dumb questions, caddy n00b.

  7. #6
    idkwhothatis123 is offline Cadillac Owners Member
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    Quote Originally Posted by Ludacrisvp View Post
    Yeah. Open the hood, and look at the top of the strut towers and you will see if there's wires attached to the top of them. Wires = MRC. You may have to remove the plastic beauty panels to see this. Or in the trunk under the spare tire cover look at the RPO list for F55 this is the option code for the MRC.
    I appreciate the help man. If I do have this feature, would I be able to lower my car? Sorry for the dumb questions, caddy n00b. I just figure with 20's, lower it. 22s stay as is.

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    curtc's Avatar
    curtc is offline OCD - Obsessive Cadillac Disorder
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    Lowering an MRC equipped car may cause all sorts of suspension issues, i wouldn't attempt it...Too much $$$ at risk monkeying with MRC.
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    idkwhothatis123 is offline Cadillac Owners Member
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    Quote Originally Posted by curtc View Post
    Lowering an MRC equipped car may cause all sorts of suspension issues, i wouldn't attempt it...Too much $$$ at risk monkeying with MRC.
    I appreciate the help guys. I'll look at my car tonight after work and see what's up.

    Edit: Definitely have mrc. Saw wires and looked up the part number in the trunk. Thanks for the heads up. Stock size for sure now.

  10. #9
    EChas3's Avatar
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    Re: 2006 sts tires

    STS can have two styles of leveling systems. Check with D3 if lowering is your goal.

  11. #10
    idkwhothatis123 is offline Cadillac Owners Member
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    Quote Originally Posted by EChas3 View Post
    STS can have two styles of leveling systems. Check with D3 if lowering is your goal.
    I'm looking to lower and add 20's without sacrificing much smoothness on the ride. I think I'm wanting my cake and eat it too.

  12. #11
    EChas3's Avatar
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    Re: 2006 sts tires

    It's OK to want it all; just realize that the handling, allignment, ride and tire life will suffer.

  13. #12
    idkwhothatis123 is offline Cadillac Owners Member
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    Re: 2006 sts tires

    I guess my next question then is the previosu owner of my car kept the staggered setup on the tires. he even bought the same tires that the oem had. will going to all one size affect the smoothness of my ride at all? i'd like to be able to rotate my damn tires and not buy new ones so often. If so, has anyone found a good size for all four?

  14. #13
    C&C's Avatar
    C&C
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    Re: 2006 sts tires

    Even though you can put same-sized tires on staggered wheels, remember the reason they are staggered is because the wheel widths (between front and back) are different as well; so rotation is still not viable.

  15. #14
    dannyquest is offline Cadillac Owners Fanatic
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    Re: 2006 sts tires

    I called Tire Rack and they stated on staggered set up go with what on the rear and install on front. Danny

  16. #15
    idkwhothatis123 is offline Cadillac Owners Member
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    Good point. Cool. Thanks guys

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