1. #1

    what size rims to get

    I am bumping up my tire size to 33" but my current factory rims wont cut it anymore. I'm looking at 33 x 10.5 x 15 or 33 x 12.5 x 15. I just don't know rim ratios to tire width. I've been told 15 x 8 rims will hold the 10.5 but what about 12.5?
    If I Wanted A Hummer I Would Have Asked Your Sister!

    1998 Jeep Grand Cherokee Laredo 5.2L (Up-Country)
    4" Rough Country X-Flex Short Arm Kit (KOR Installed)
    Hydro 9000 Shocks
    Kevins Off-Road Adjustable Front Track Bar
    Custom Built Heavy Duty Front Driveline
    Limited Slip Dana 30 Front/Limited Slip Dana 44 Rear
    Ballistic Fabrication 1.5" Wheel Spacers
    31" BFGs
    250000+ Miles And Sill Running Strong

  2. #2

    Re: what size rims to get

    You can get the 12.5 on to the 8 inch rim.The tire changer may be mad at you for a few days but it will work.Really helps if you air down.Kind of acts like a bead lock.

  3. #3

    Re: what size rims to get

    I have 33X12.5X15 and I run a 15X8 rim. I run them at about 26 pounds of air.

  4. #4

    Re: what size rims to get

    Quote Originally Posted by 82CJ7JEEP View Post
    I have 33X12.5X15 and I run a 15X8 rim. I run them at about 26 pounds of air.
    Same, but I run mine at 30. I've had no problems at all.

    Quote Originally Posted by xt master View Post
    You can get the 12.5 on to the 8 inch rim.The tire changer may be mad at you for a few days but it will work.Really helps if you air down.Kind of acts like a bead lock.
    Why would they be mad? I mounted my tires with no troubles at all.

  5. #5
    Thanks for all the info. Next question is backspacing. I currently use factory Jeep rims with 1.5" spacers. I want to eliminate the spacers and add a little more spacing if possible. Any ideas? What is the factory backspacing?
    If I Wanted A Hummer I Would Have Asked Your Sister!

    1998 Jeep Grand Cherokee Laredo 5.2L (Up-Country)
    4" Rough Country X-Flex Short Arm Kit (KOR Installed)
    Hydro 9000 Shocks
    Kevins Off-Road Adjustable Front Track Bar
    Custom Built Heavy Duty Front Driveline
    Limited Slip Dana 30 Front/Limited Slip Dana 44 Rear
    Ballistic Fabrication 1.5" Wheel Spacers
    31" BFGs
    250000+ Miles And Sill Running Strong

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