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Tire / Rim Question - 12.5's On 8.5 Inch Rims

Discussion in 'Intermediate CJ-5/6/7/8' started by 74CJ5 Renegade, Sep 17, 2021.

  1. Sep 17, 2021
    74CJ5 Renegade

    74CJ5 Renegade Member

    Houston, TX
    Joined:
    Dec 1, 2002
    Messages:
    269
    Any issue with running 12.5 inch wide tires on 8.5 inch rims?

    I really like the look of the Raceline 946G 7X Rims but they only come in 8.5 inch wide.... I'm looking at the Fuel M/T's... 33 / 12.5 / 17

    I need the 17 inch rims for the Wilwood Disc upgrade!!! And I need the stopping power due to the Holley Sniper EFI upgrade!! (I'll post some info about all of the upgrades soon...)

    Thnx
     
    74CJ5 Renegade, Sep 17, 2021
    #1
  2. Sep 17, 2021
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
    Joined:
    Jul 18, 2013
    Messages:
    5,629
    Sounds good to me....I ran 33x12.5 on 15x8 rims on my cj7 for many years. I liked having a rim on the narrow side to help protect the rim from rock rash and I think it protects the bead a bit more. I currently run 33x10.5 on 15x8.5 rims on the cj5, and I wish the rims were a bit more narrow for the 10.5" wide tire.
     
    FinoCJ, Sep 17, 2021
    #2
  3. Sep 17, 2021
    Jw60

    Jw60 Cool school 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
    Joined:
    Apr 8, 2008
    Messages:
    4,793
    Your good per:

    Fuel Gripper M/T 33X12.50R17

    "The 33X12.50R17 Fuel Gripper M/T has a diameter of 33", a width of 12.8", mounts on a 17" rim and has 630 revolutions per mile. It weighs 70.4 lbs, has a max load of 3085 lbs, a maximum air pressure of 65 psi, a tread depth of 21/32" and should be used on a rim width of 8.5-11"."
     
    Jw60, Sep 17, 2021
    #3
  4. Sep 17, 2021
    74CJ5 Renegade

    74CJ5 Renegade Member

    Houston, TX
    Joined:
    Dec 1, 2002
    Messages:
    269
    Thnx JW 60.... the new wheels and tires are on the way!!!
     
    74CJ5 Renegade, Sep 17, 2021
    #4
    Jw60 likes this.
  5. Sep 24, 2021
    Mike C

    Mike C Member

    Austin, TX
    Joined:
    Feb 19, 2007
    Messages:
    743
    We have 35 12.5 BFG AT’s on my kid’s Jimmy. They are mounted on 17x9 American Racing rims which is the most common width for 12.5” tires in the 17” diameter for whatever reason. 15x10 and 16x10 even 18x10 are common but its’ 17x9 for whatever reason. Long way around to say the 8.5” will be fine…
     
    Mike C, Sep 24, 2021
    #5
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