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Thread: Tire help ?

  1. #1
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    Default Tire help ?

    So i just bought these tires and they are larger than what i was riding on befor, there 31 x 10.50 the others were 235/75/r15 os somethin like that. anyway after i got them i was doing a u turn and felt/heard knock noise found out it was my tire scraping a cross frame.

    Question is what is this bar and will a lift fix it?



    Thanks

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    That is your lower control arm. I do not believe a lift will fix the problem. What you need to look at is the backspacing on your wheels.

    Prior to buying my wheels and tires, I did some research. I read that on a 8" wide wheel you should have a 4" backspace, and on a 10" wide wheel it really didn't matter! lol So I bought 15"x10" wheels. They have 3 3/4" (3.75) backspace.

    Since I cut the fenders I can turn full left or right without any rubbing with my 32x11.50x15 tires, on my 10x15 wheels.

    The downside to this (I found out later) is that with the wheel being so wide it is harder to keep a under inflated tire on the wheel while off road.

    Wheel spacers would be another option, but I personally do not like those. It could be a short term solution until you can get the right wheels.

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    Thanks,I really dont like the look of spacers either,but these wheels are new with 1500 miles on em already so looks like spacers it is.

    How much does a set of spacers cost?

    So next time I buy tires I need to get 8" wide tires rather than 10?

    Does everybody with 10" tires run into this problem?Do you Mudderoy with 11"?

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    Quote Originally Posted by Evol View Post
    Thanks,I really dont like the look of spacers either,but these wheels are new with 1500 miles on em already so looks like spacers it is.

    How much does a set of spacers cost?

    So next time I buy tires I need to get 8" wide tires rather than 10?

    Does everybody with 10" tires run into this problem?Do you Mudderoy with 11"?
    Never bought wheel spacers, so I'm not sure.

    This is a backspace issue not a tire width issue. Of course a really wide tire would cause a problem, but I don't think you'd be going for the rubber cylinder look.

    I think you may be getting the tires and the wheels confused. What size wheels do you have and what are their backspace? That's the metal part that the tire is mounted to.

    I think most people run 11" wide on 32" tires, and 12" wide on 33" tires.

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    He was suggesting 8" wide rims not 8" wide tires. The backspacing is the important thing to avoid rubbing. This might be helpful.
    http://www.4wd.com/productdetails.aspx?partID=14872

  6. #6
    kryptonitexj Guest

    Default LCA Rubbing

    You could adjust your steering stop to not allow the wheel to turn so far. Its a little bolt with a nut on the inner "C". Its a temp fix but it works.

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    Looking at the picture of your rig in the "Albums" section I'd guess those are factory 15x7" wheels. That means they are made for thinner tires. This is the reason the wider tires are rubbing. At least that's my opinion.

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    back~spacing...........use the force Luke!

  9. #9
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    Quote Originally Posted by Evol View Post
    So i just bought these tires and they are larger than what i was riding on befor, there 31 x 10.50 the others were 235/75/r15 os somethin like that. anyway after i got them i was doing a u turn and felt/heard knock noise found out it was my tire scraping a cross frame.

    Question is what is this bar and will a lift fix it?



    Thanks
    You have some options to solve that issue.

    One would be what was mentioned above, Backspacing. Your factory jeep wheels come with (I think) 5.5" backspacing. This keeps your tires inside the fenders. You can get wheels that have 4" or 3.75" backspacing and they stick out 2" more and you won't be close to the arms anymore but this requires buying new wheels.


    http://store.summitracing.com/partde...5&autoview=sku

    Wheel spacers: You can buy 1.25" or larger wheel spacers that bolt on the hub and then your wheel bolts onto the spacer. This pushes your wheels out further the same way an aftermarket wheel does. Spacers usually go for about 120-200 for a set of four, which is normally what some black crager steel wheels costs (with 4" backspacing) so both do the same thing and cost about the same. The choice is up to you, whether you want to keep your stock wheels and use spacers or ditch the stock wheels and get some steel wheels for cheap that have the proper backspacing. Keep in mind, some states are picky about tires sticking outside the fenders. Look into that before doing any mods to your wheels.

    http://www.4wd.com/productdetails.aspx?partID=14872


    Another option would be WJ factory control arms. They have a bend in them for tire clearance and can be found for cheap too.


    http://www.madxj.com/MADXJ/technical...rms/WJ_LCA.htm

    I have the same rubbing issue as you but kinda got used to it by learning not to crank the wheel fully left or right. Someday i'll get to fixing it. It's not hurting my tires since my arms are aftermarket tubular arms so the tires just "pet" the arms.

    Hope this helps.
    Last edited by muddeprived; 05-02-2009 at 06:44 AM.

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    Was totally unaware of the WJ bent LCAs thanks mudd.

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    muddeprived is offline Level: Uber Jeep Cherokee Trailer Queen
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    Quote Originally Posted by BlueXJ View Post
    Was totally unaware of the WJ bent LCAs thanks mudd.
    You are Welcome. You gotta grind down the bolt sleeve to make it fit though. The sleeve is too wide for the xj brackets. Easily modded though.

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    Quote Originally Posted by muddeprived View Post
    You are Welcome. You gotta grind down the bolt sleeve to make it fit though. The sleeve is too wide for the xj brackets. Easily modded though.

    Do you need to alter the sleeve on both the forward and aft ends of the WJ LCA?

  13. #13
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    Not sure.....

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    Default Tire and wheel help

    I really like the look of my OEM wheels which I just looked up as 15x7s. However, I have a 3" RC II lift on my XJ now. It looks silly and needs more tire meat than the stockers but it seems like 31"rs will cause me problems (even though the Rough Country website says 31" is the recommended tire). What do you all think of using 30x9.5R15s or LT235/75R15s? Will I still get tire rub?

    Also, I want good bite in snow, is a skinnier, taller tire better than fatter "flotation" tires for snow?

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    Quote Originally Posted by JG-Man View Post
    I want good bite in snow, is a skinnier, taller tire better than fatter "flotation" tires for snow?
    In my opinion a skinny tire is best in the snow.

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