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  1. #1

    Default Front diff problems....

    New to this site. I have a problem with my front differential.....began when i changed my tires from stock to larger rims and tires with a different offset. Is it possible that this is the cause for my front differential going? I drive a 99 Suburban.

  2. #2


    So what is the problem your having?

  3. #3


    Problem is grinding constantly, i've changed the fluid already and there was metal in the fluid....I'm really wondering if the new tires/rims caused this.... thanks for any input.

  4. #4

    Join Date
    Aug 2008
    East of Branson, Missouri
    Blog Entries


    Any possibility the 4WD is engaged and/or has not disengaged from a previous 4wd trip/excursion?

    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy

  5. #5


    How much bigger are the tires (overall diameter)? Can I assume a half-ton Suburban? The 8.25 IFS in the half ton suburbans is a pretty weak differential, and really big tires could cause problems. Of course, I've heard of several people who have trouble with that diff with stock tires, too.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

  6. #6


    Probably not the cause, usually larger tires will cause diff gears and pinions to chunk into pieces. This sounds like the bearings are going or the gears arent riding right and flaking off. About like normal wear for high mileage.

  7. #7


    Thanks, i'm getting everything changed tommorrow, trucks in great shape otherwise....just wasn't sure if I should consider changing the rims/tires again.....

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