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2004-2007 Cadillac CTS-V General Discussion Discussion, I found a set of used tires-will they fit? in Cadillac CTS-V Series Forum - 2004 - 2007; Yolo!...
  1. #16
    joshuajohn1981's Avatar
    joshuajohn1981 is offline Cadillac Owners Fanatic
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    Yolo!

  2. #17
    Motown Cad is offline Cadillac Owners Fanatic
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    Re: I found a set of used tires-will they fit?

    OMG D3l7a3ch0,

    I'm crying at your responses. You made my day and I'm thrilled to see that there is hope for our country with young minds like yours. I'm a Program Manager and manage Engineers. It's quite gratifying work. They blow me away with their knowledge/work and roll their eyes at me when I say "wtf did you just say? English please. Then the engineer humor attacks begin and I only get 60% of it. When their done laughing at me I say "Yeah, yeah... But I'm still in charge and it's hard leading five 50lb heads around and you guys do know that PM's refer to you as "gimps". As in "bring out the gimp" from Pulp Fiction. Good clean fun.

    ----------

    Go Aerospace!
    D3l7a3ch0 and D3l7a3ch0 like this.

  3. #18
    carlson_mn is offline Cadillac Owners Enthusiast
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    Re: I found a set of used tires-will they fit?

    Tires are too small for car like others have said. I'm going up in overall size from 26.6 to 27" to close the wheel well gap a small amount and 1st gear is spun far too easily as is, not that .4" will make much difference either way though. I am planning on 255/45 for my next tire size.

  4. #19
    D3l7a3ch0's Avatar
    D3l7a3ch0 is offline Cadillac Owners Enthusiast
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    Re: I found a set of used tires-will they fit?

    Quote Originally Posted by Motown Cad View Post
    OMG D3l7a3ch0,

    I'm crying at your responses. You made my day and I'm thrilled to see that there is hope for our country with young minds like yours. I'm a Program Manager and manage Engineers. It's quite gratifying work. They blow me away with their knowledge/work and roll their eyes at me when I say "wtf did you just say? English please. Then the engineer humor attacks begin and I only get 60% of it. When their done laughing at me I say "Yeah, yeah... But I'm still in charge and it's hard leading five 50lb heads around and you guys do know that PM's refer to you as "gimps". As in "bring out the gimp" from Pulp Fiction. Good clean fun.

    ----------

    Go Aerospace!
    you called me ...young! you sir have made my week

    thank you very much Mr Motown Cad.

  5. #20
    rand49er's Avatar
    rand49er is offline Cadillac Owners 10000+ Posts
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    Re: I found a set of used tires-will they fit?

    Quote Originally Posted by D3l7a3ch0 View Post
    you called me ...young! you sir have made my week ...
    I could make your month!

    But, check me if I'm wrong, but going to these tires wouldn't necessarily reduce top speed all the way from 163 to 153 since the torque as applied at the tire-pavement interface would be greater with the smaller diameter tires.




    D3, you are indeed a refreshing character on here.
    D3l7a3ch0 and D3l7a3ch0 like this.

  6. #21
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    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    character, sure...
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  7. #22
    D3l7a3ch0's Avatar
    D3l7a3ch0 is offline Cadillac Owners Enthusiast
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    Re: I found a set of used tires-will they fit?

    Quote Originally Posted by rand49er View Post
    I could make your month!

    But, check me if I'm wrong, but going to these tires wouldn't necessarily reduce top speed all the way from 163 to 153 since the torque as applied at the tire-pavement interface would be greater with the smaller diameter tires.

    D3, you are indeed a refreshing character on here.
    thank you, sir~

    I got the high score on the physics midterm; 90% before the curve. but I have mixed feelings about it. the ones I missed were some of the easiest questions on the exam, and I didn't pay them enough attention. but I'm ok with it because this class is consistent in reminding me I'm not as smart as I think I am.

    ...but I'm going to ace the final, I know it! lol

    re: the top speed.. it's a small difference in circumference, and at low speed all you feel is the better mechanical leverage so they're just plain torque-ier. the problem is the energy of a moving object increases exponentially with its speed (rather than linear). in the case of a rolling object, it has forward motion energy and rotational energy... and at 150mph the tires are screaming:

    45 series tires spin 32.8 times per second at 150mph
    35 series tires spin 34.6 times per second at 150mph

    those extra 1.8 revolutions when it's already spinning 32.8 times per second (and travelling at 150mph) costs 7.5 horsepower per wheel. it's the same idea as when you're doing 60 and the car won't speed up unless you give it more power--on top of the power you're already using to do 60. at 150mph the stock V doesn't have any more power to give to make the smaller wheels spin faster.

    you're letting me talk about this because you know I enjoy it, aren't you.

  8. #23
    Andringa is offline Cadillac Owners Enthusiast
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    Re: I found a set of used tires-will they fit?

    Quote Originally Posted by D3l7a3ch0 View Post
    thank you, sir~

    I got the high score on the physics midterm; 90% before the curve. but I have mixed feelings about it. the ones I missed were some of the easiest questions on the exam, and I didn't pay them enough attention. but I'm ok with it because this class is consistent in reminding me I'm not as smart as I think I am.

    ...but I'm going to ace the final, I know it! lol

    re: the top speed.. it's a small difference in circumference, and at low speed all you feel is the better mechanical leverage so they're just plain torque-ier. the problem is the energy of a moving object increases exponentially with its speed (rather than linear). in the case of a rolling object, it has forward motion energy and rotational energy... and at 150mph the tires are screaming:

    45 series tires spin 32.8 times per second at 150mph
    35 series tires spin 34.6 times per second at 150mph

    those extra 1.8 revolutions when it's already spinning 32.8 times per second (and travelling at 150mph) costs 7.5 horsepower per wheel. it's the same idea as when you're doing 60 and the car won't speed up unless you give it more power--on top of the power you're already using to do 60. at 150mph the stock V doesn't have any more power to give to make the smaller wheels spin faster.

    you're letting me talk about this because you know I enjoy it, aren't you.
    I'm sorry, we can't accept these answers if you don't show your work.
    D3l7a3ch0 and D3l7a3ch0 like this.

  9. #24
    D3l7a3ch0's Avatar
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    Re: I found a set of used tires-will they fit?

    sunovabiiiiiiiii!!!!!

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