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445/50R22.5 to duals

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Dorsey, Sep 3, 2013.

  1. Sep 3, 2013 #1
    Dorsey

    Dorsey Medium Load Member

    412
    209
    Jan 28, 2012
    Florida
    0
    Ive been truck shopping and one of the trucks Ive found has 445/50R22.5 super singles on it. I pull a 7 car high mount short neck trailer. I have to put the 5th wheel all the way back over the rear axle. Im scared of one of the tires blowing on the rear axle so I was thinking of leaving the SS on the front axle and replacing the rear with duals. Are the 295/75R22.5 tires the same height as the 445/50R22.5 tires?
     
    Dorsey, Sep 3, 2013
    Dorsey, Sep 3, 2013
    #1
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  3. Sep 3, 2013 #2
    Richter

    Richter Road Train Member

    4,090
    1,700
    Feb 13, 2012
    Philadelphia Pa
    0
    unless you have a 6x2 configuration, you want to have all drives the same. The front and rear axle should turn at the same speed or you will constantly be making your power divider work and heat up. Even unloacked, power goes to all wheels and constanly having it not devided even will cause problems
     
    Richter, Sep 3, 2013
    Richter, Sep 3, 2013
    #2
  4. Sep 4, 2013 #3
    JPenn

    JPenn Road Train Member

    1,829
    1,873
    Mar 5, 2008
    Northern Tier PA
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    If you want duals, you can probably find someone to swap with. A fair number of us like the singles.
     
    JPenn, Sep 4, 2013
    JPenn, Sep 4, 2013
    #3
  5. Sep 4, 2013 #4
    Dorsey

    Dorsey Medium Load Member

    412
    209
    Jan 28, 2012
    Florida
    0
    I would love to keep them and find some duals that are the same height just for the rear axle. Im thinking having the 5th wheel directly over the rear axle if one of the rear ones blew with all the weight over the rear of the frame there could be some seroius damage. Am I being over paranoid?
     
    Dorsey, Sep 4, 2013
    Dorsey, Sep 4, 2013
    #4
  7. Sep 4, 2013 #5
    fortycalglock

    fortycalglock Road Train Member

    6,150
    6,581
    Jun 25, 2011
    Tourist Town, FL
    0
    OP, 445 and 295 are the same height, you'll be fine. Heck when one axle has fresh tires and the other has 8/32, that's a 3/4" difference in tire size for a lot of tires. You won't be able to rotate, so I would go all the same for that reason alone.
     
    fortycalglock, Sep 4, 2013
    fortycalglock, Sep 4, 2013
    #5
  8. Sep 4, 2013 #6
    cetanediesel

    cetanediesel Medium Load Member

    470
    186
    Mar 26, 2013
    Albany, NY
    0
    Unless this is an independent spring suspension, both rear drive axles will have the same load on them. With an air ride the same amount of pressure goes in all 4 bags.
     
    cetanediesel, Sep 4, 2013
    cetanediesel, Sep 4, 2013
    #6
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