FE1 vs FE2
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2008-2013 Cadillac CTS General Discussion Discussion, FE1 vs FE2 in Cadillac CTS Second Generation Forum - 2008-2013; I have test driven 2 CTSs, one with 17s and the FE1 suspension, and one with 18s and the FE2 ...
  1. #1
    fps_dean is offline Cadillac Owners Fanatic
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    FE1 vs FE2

    I have test driven 2 CTSs, one with 17s and the FE1 suspension, and one with 18s and the FE2 suspension. I noticed that the one with the FE2 suspension actually felt like a softer suspension on bumps, where bumps on the FE1 suspension were very harsh -- however the general condition of the road I was on with the car with FE1 was worse, but I felt every single one of them, and pretty hard.

    I thought the FE1 was supposed to be softer. Has anyone else noticed this?

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    Joe
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    Re: FE1 vs FE2

    It could have been tire pressure that caused a harsh ride or even make of tire or for that matter wear.

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    gohawks63's Avatar
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    Quote Originally Posted by Joe
    It could have been tire pressure that caused a harsh ride or even make of tire or for that matter wear.
    Nope. A friend of mine who had a base CTS immediately commented when he test drove my car how much stiffer the suspension felt.

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    fps_dean is offline Cadillac Owners Fanatic
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    Re: FE1 vs FE2

    The 17s on the FE1 were filled to 35 according to the TPMS readout which was what it said on the door. The car with FE2 and 18s, I didn't read the dor but the tires were filled to 29-30 and one of them to 27.

    The FE1 car did have the stock Michelins where the FE2 car had some Toyos too, and the stock Michelins do not ride very well, I think we all know that... Good point

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    Re: FE1 vs FE2

    35 psi is the recommended pressure.
    fps_dean likes this.

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    Re: FE1 vs FE2

    Quote Originally Posted by Joe View Post
    It could have been tire pressure that caused a harsh ride or even make of tire or for that matter wear.
    Bingo!

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    fps_dean is offline Cadillac Owners Fanatic
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    Re: FE1 vs FE2

    And isn't 30psi recommended for the 18s too?

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    Re: FE1 vs FE2

    35 psi. I have FE2/18" Performance. I just went out to my car and I double checked. 35 psi.

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    The_Judge's Avatar
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    Re: FE1 vs FE2

    Quote Originally Posted by fps_dean View Post
    And isn't 30psi recommended for the 18s too?
    No. It's 35 PSI, or it was for the 18" tires on my 2008 CTS. Same for the 19" tires on my 2011 CTS.

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    Re: FE1 vs FE2

    I have heard that with the larger tires and the FE2 setup, that the ride is actually better irrespective of performance characteristics. When I tested the 2 setups back in 08, IMO - the FE2 rode better although neither felt plush and soft as I expected with this being a Cadillac. Didn't really know about different setups initially.

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    I have FE2 and was given an FE1 loaner. Much softer ride but not AWD.

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    fps_dean is offline Cadillac Owners Fanatic
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    Re: FE1 vs FE2

    Ah no wonder why the tire pressure warning on the FE2 car was going off when the lowest pressure was 27 if it's supposed to be 35.

    The thing is after driving the car with 17s, I got into my STS and I thought that was much better. After driving the car with the 18s, I got into my STS and I think I may have liked the CTS ride slightly better, but very close.

    I found another car with FE2 and 18s -- would I wear the tires out too fast if I ran them around 30psi?

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    Re: FE1 vs FE2

    Yes.

    There is no reason in the world to drive with 30 psi. None.

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    Quote Originally Posted by tinman
    Yes.

    There is no reason in the world to drive with 30 psi. None.
    I agree. For what reason? Softer ride? At that point just buy the base models with the FE1 suspension.

  16. #15
    Joe
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    Re: FE1 vs FE2

    I might add its important to have an accurate tire gauge and check and fill the tires when they are cold and have not been driven too far. Tires can fluctuate 3-4 pounds during the day so a couple of pounds is no big deal. I keep a very close eye on the wear of my tires. If they are wearing on the outer edges excessively then the pressure is too low. Checked them monthly with a gauge and at least weekly on your dash. Best of luck

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