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Tire time....

Discussion in 'Early CJ5 and CJ6 Tech' started by Old Bill, Mar 20, 2005.

  1. Mar 20, 2005
    Old Bill

    Old Bill Aggressively passive....

    Really Southern...
    Joined:
    Nov 12, 2004
    Messages:
    822
    Hey All,

    Check my math here please...Keep in mind that I have some tire rub when crossed up now. Currently running 29x7 inch tires on 15" stock wheels

    I'm definately going with BFG MT 30x9.5. Can't justify going bigger for my trail needs. If I stick with the stock rims, I'll lose about 1.25" of clearance when articulated due to the extra width of the tire. I can gain this 1.25" back with a set of these in the 15x8's and a 2.5" backspacing. (Stock backspacing is 3.75") This of couse puts more tire outward, but only about 1.25" more than without, so I don't *think* I'll be stressing the axles a whole lot more.

    So here's the questions...

    Is this valid thinking to keep rub to a minimum, or at least to where it is now?
    Any problems with a 9.5" tire on an 8" rim?
    Will that extra 2.5" of tire sticking outward cause any troubles/too much stress?

    Getting ready to pull the trigger on this, just got to know what I'm aiming for first!

    TIA
     
    Old Bill, Mar 20, 2005
    #1
  2. Mar 20, 2005
    Boyink

    Boyink Super Moderator Staff Member

    Tulsa, OK
    Joined:
    Sep 20, 2002
    Messages:
    6,197
    My $0.02 -- Turn the bumpstops out front and just live with the rub in the back...little bit of scuffed paint never hurt no one.

    For my tastes that's not enough tire for a 8" wheel - easier to lose a bead when aired down.

    I'd also be concerned with the outside edge of the tire hitting the fender/fender flare when crossed up - moreso than stressing the axle.
     
    Boyink, Mar 20, 2005
    #2
  3. Mar 20, 2005
    Uncle Jeep

    Uncle Jeep Snow in the desert??

    No longer in NM!!!
    Joined:
    Feb 20, 2004
    Messages:
    37
    I agree with Boyink on the tire/rim issue. IMHO, 15x8 rims with a 30x9.50R15 would not be a good combo. 15x7 rims would help reduce the possibility of poping the tire off the bead.
     
    Uncle Jeep, Mar 20, 2005
    #3
  4. Mar 20, 2005
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    I agree, for 9.50's, I'd stick with a 7" wheel...
     
    Patrick, Mar 20, 2005
    #4
  5. Mar 21, 2005
    66cj5

    66cj5 Jeep with no name

    NorthWest Indiana
    Joined:
    Sep 10, 2003
    Messages:
    2,084
    need beadlocks for 15x8.
     
    66cj5, Mar 21, 2005
    #5
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