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2008-2013 Cadillac CTS General Discussion Discussion, Tires in Cadillac CTS Second Generation Forum - 2008-2013; Can I put tires on the back of my CTS SPORT WAGON AWD that are larger than the front tires ...
  1. #1
    jerryp740 is offline Cadillac Owners Member
    Automobile(s): CTS SPORTWAGON
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    Tires

    Can I put tires on the back of my CTS SPORT WAGON AWD that are larger than the front tires as long as the rim size is the same?

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  3. #2
    gohawks63's Avatar
    gohawks63 is offline Cadillac Owners Connoisseur
    Automobile(s): 2012 Black Diamond CTS-V Coupe, 2011 BMW X5 Premium
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    Quote Originally Posted by jerryp740
    Can I put tires on the back of my CTS SPORT WAGON AWD that are larger than the front tires as long as the rim size is the same?
    The coupe has 1/2wider tires in the back so I would assume the wagon can accommodate the same.

  4. #3
    billeee is offline Cadillac Owners Fanatic
    Automobile(s): 2011 DTS 2012 CTS
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    Re: Tires

    Check the outside diameter (all tires of the same rim size do not have the same outer diameter). If different than stock, it could cause a problem with speedometer calibration. If different than front it could cause a problem with the ABS.

  5. #4
    C "T" ess's Avatar
    C "T" ess is offline Cadillac Owners Connoisseur
    Automobile(s): 2012 CTS Coupe
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    Re: Tires

    You also have to be concerned about the effect on your AWD. If you are going to the same wheel tire combination, only wider in the rear, you should be good. As mentioned above, different diameters could have the ability to cause a host of problems.

  6. #5
    Tsirpas is offline Cadillac Owners Member
    Automobile(s): 2008 CTS 3.6L AWD
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    Toronto, Ontario
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    I have the cts-v rims on my AWD sedan, which the rear rims are wider than the front. The only tire sizing that was suggested to be safe for me was 245/50/19 and 275/45/19 for the same diameter in the front and back and to ensure an equal spin.

  7. #6
    tinman's Avatar
    tinman is offline Cadillac Owners Connoisseur
    Automobile(s): 2010 CTS Shooting Brake W/Performance package, 3.6 DI
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    Re: Tires

    Width should make no difference at all to the best of my knowledge. O.D. is another story. To check the OD of different tires, look here:

    http://1010tires.com/TireSizeCalculator.asp

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