Bigger wheels reduce mpg?
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2008-2013 Cadillac CTS Appearance Mods Discussion, Bigger wheels reduce mpg? in Cadillac CTS Second Generation Forum - 2008-2013; My CTS 3.0 has the factory 17s, and I wanted to go up to black 20s. I know it may ...
  1. #1
    sinistersix is offline Cadillac Owners Member
    Automobile(s): CTS 2011
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    Bigger wheels reduce mpg?

    My CTS 3.0 has the factory 17s, and I wanted to go up to black 20s. I know it may be a bit slower if the wheels are heavier, but have people noticed a drop in MPG by going to a 20" wheel? If so, I may stick with 18s depending on the drop...

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  3. #2
    TrimThis is offline Cadillac Owners Fanatic
    Automobile(s): 2011 TG CTS Coupe
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    Re: Bigger wheels reduce mpg?

    Everything changes...ride, braking, and mileage. Just do it

  4. #3
    sinistersix is offline Cadillac Owners Member
    Automobile(s): CTS 2011
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    Re: Bigger wheels reduce mpg?

    How much MPG we talking though? One of the main reasons I got the cts was better mpg over my ram, so dont want to be going too far in the opposite direction with mpg

  5. #4
    arw1510 is offline Cadillac Owners Enthusiast
    Automobile(s): 2004 CTS 3.6, 2004 SRX 4.6 AWD, 2012 CTS 3.6 DI AWD
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    Heavier wheels will probably reduce it, but what mpg are you getting now?

  6. #5
    sinistersix is offline Cadillac Owners Member
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    Re: Bigger wheels reduce mpg?

    about 23-25mpg

  7. #6
    dm16raiders's Avatar
    dm16raiders is offline Cadillac Owners Member
    Automobile(s): 2008 CTS DI
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    Re: Bigger wheels reduce mpg?

    I have 22" wheels on my CTS. They came on the car as well as the stock set and I have yet to put the stock wheels on so I can't really compare, but i did make a 4 hour drive on the high way and average 23 mpgs. You can definitely feel every bump but it is worth it in my opinion.

  8. #7
    arw1510 is offline Cadillac Owners Enthusiast
    Automobile(s): 2004 CTS 3.6, 2004 SRX 4.6 AWD, 2012 CTS 3.6 DI AWD
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    Quote Originally Posted by sinistersix
    about 23-25mpg
    I get 18-20 on my 12 sedan with the factory 19s and awd

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