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  1. #1

    Default will running one tire smaller(spare) blow front diff?

    My spare is only a 31 at most, my other four are 33's. someone informed me its much cheaper to tow then blow a diff. makes sense to me in the rear because its driving and supposed to be posi. will running a one tire smaller on my front axle blow that diff as well if the 4wheel is not engaged?

    98 Silverado
    5.7 vortec
    14 bolt posi rear, with 373s
    33" wild countrys
    tube steps, chrome kit, fenderflares,
    chrome diff plate, window flares,
    2-10"Alpine TypeE, Alpine 450watt V-Power.

  2. #2


    Your front diff is an open diff, however b/c the tires are different sizes, your spider gears will getting a work out. I believe you should be ok, just do not drive fast.
    '00 1500 4x4 4.8l
    single glasspack
    daily driver/workhorse

  3. #3


    If you need to, run it on the front. And only as long as you have to...

    '96 K1500, 5.7
    6" RCD
    35" Toyo M/T On 16" Black Raceline Raptors
    4.56 Yukon Gears w/ TruTrac Rear
    S&B CAI
    Dual Flowmaster 40's
    Camo Wet Okoles
    Line-X Bedliner

    NW BlackDiamond Edition

  4. #4
    Sr. Engineer ahm1127's Avatar
    Join Date
    Jan 2009
    Pennsylvania, United States


    Use for a short period to get home but remove ASAP as the others have said. I always have 5 tires the same size, even if 1 is a different brand (spare only).
    Everyday I wake up is a great day! ;-)
    05' Chevy Suburban, 11' Ford Fiesta

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