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  1. #1
    Join Date
    Jan 2018
    Location
    Grand Rapids, MI
    Posts
    86

    Default Stiff Suspension Question

    04 XC70 170K miles.

    About 20k miles ago, I replaced the front struts with IPD quick struts that use Sachs struts. They've always kinda ride a bit stiffer than the OEM. But I also noticed recently that the ride seem rough or stiffer. It feels very little bump. It's smooth when on smooth roads. I always have to check tire pressure. The sweet spot seems to be 28psi which is lower than Volvo decal. I'm just wondering if there are other components I should check. All other suspension parts are still original. I have replaced 3 engine mounts except the ball looking mounts in the lower front and back of engine.
    Last edited by Voldog; 01-06-2025 at 12:30 PM.
    IF IT AIN'T BROKE - DON'T FIX IT!
    04 Volvo XC70 5LT 143k "Floatey" Ruby Red, Valvoline 0W40
    07 Honda Accord V6 120k Silver, Napa 5W20 Blend
    07 Honda Accord L4 130k Bronze, Napa 5W20 Blend

  2. #2
    Join Date
    Feb 2010
    Location
    Virginia Beach
    Posts
    4,132

    Default

    Rough? Or stiffer? I suspect it?s more rough, and that is typically a blown bushing, that allows the suspension to feel ?harsh?. The front lower control arm bushings don?t last long, and I would start my search there.
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (130K, Michelin AS4, HPL 0W40)
    2005 MB SL600 (58K Michelin AS4, Mobil 1 0W40)
    2004 V70R (147K, six speed M66, HPL 5W40)
    2004 XC90 (247K, HPL 0W30 Euro)
    2002 V70-XC (300K, HPL 0W30 Euro)
    2002 V70-T5 (230K, IPD bars, Bilsteins)
    2001 V70-T5 (125K, IPD downpipe, cat back and other mods)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

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