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Tires on the trail

Discussion in 'Early CJ5 and CJ6 Tech' started by fat boy slim, Mar 22, 2007.

  1. Mar 22, 2007
    fat boy slim

    fat boy slim New Member

    Alabama
    Joined:
    Mar 20, 2007
    Messages:
    34
    I am thinking of putting a combination of two different tires on my CJ. On the rear I would like to run TSL/SX's and on the front I am considering Thornbirds. The front would be 35X14.50X15 and the rear would be 35X15.50X15. Do you guys think on the trail that this would be a good setup or not?
     
  2. Mar 22, 2007
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    9,221
    NO!

    Thornbirds suck. On or off-road.

    See last month's Jp, they were one of the lamest 4x4 products made and they pleaded with Interco to discontinue them.

    Having said that, I'm curious. Why mismatch the tires?

    I have see it done, I've see Boggers on the rear and TSLs on the front. Didn't seem to offer any big advantage that I saw, but I didn't drive it.
     
  3. Mar 22, 2007
    fat boy slim

    fat boy slim New Member

    Alabama
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    Mar 20, 2007
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    34
    Looking for the best turning grip in tight places! Better steering control.
     
  4. Mar 22, 2007
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    You don't want Thornbirds if you want grip...

    The TSLs are a much better choice.
     
  5. Mar 22, 2007
    fat boy slim

    fat boy slim New Member

    Alabama
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    Mar 20, 2007
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    I guess a thornbird is good for only a spare. HA!
     
  6. Mar 22, 2007
    DrDanteIII

    DrDanteIII Master Procrastinator

    Milford NJ 08848
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    Mar 21, 2007
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    1,516
    I run tsl/LTB's on all 4. They grip great, I've never been at a loss for traction, and the turning radius is still acceptable for 33x13.50-15's. Dont get the Thornturds. You could run boggers on the back and tsl's on the front for max mud grip, but the boggers dont hold side hills as well as the tsl's do.
     
  7. Mar 22, 2007
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    I wouldn't even put it there, I usually depend on my spare in case of emergency! R)
     
  8. Mar 22, 2007
    97XJ_95YJ

    97XJ_95YJ I hate torx bolts

    Woolrich, PA
    Joined:
    Feb 3, 2006
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    250
    I've never heard anything good about thornbirds...other than maybe that they "look" aggressive for people who use them on show trucks.
     
  9. Mar 22, 2007
    jayhawkclint

    jayhawkclint ΜΟΛΩΝ ΛΑΒΕ

    Oklahoma City, USA
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    May 18, 2006
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    2,622
    Only place I've ever seen them, too.
     
  10. Mar 22, 2007
    nrg0920

    nrg0920 New Member

    Raleigh, NC
    Joined:
    Feb 1, 2007
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    38
    x2 LTB's are great tires.
     
  11. Mar 22, 2007
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
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    Sep 20, 2002
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    3,437
    I've heard and witnessed all good things about the LTBs. DrewDog runs them on his ECJ5 with excellent results....

    [​IMG]
     
  12. Mar 22, 2007
    Txjake

    Txjake I wrenched with Sparky

    Oklahoma City OK
    Joined:
    Feb 3, 2006
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    544
    Thornbirds even suck on the street. My buddy in Wisconsin bought a truck with some and they were not even good street tires. Possibly the worst tire you can run offroad, IMO
     
  13. Mar 22, 2007
    wiley69cj5

    wiley69cj5 Got Mud!

    Parkersburg WV
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    Dec 8, 2006
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    26
    Thornbirds suck! Go with the swampers.
     
  14. Mar 22, 2007
    StraightToPlaid

    StraightToPlaid Ludicrous speed!!!!

    West Chester, OH
    Joined:
    Nov 21, 2006
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    338
    The next tires I get will be High Tec retreads. Not the best, but for less than 100 a tire you can't beat it.
     
    Last edited: Mar 23, 2007
  15. Mar 22, 2007
    Dummy

    Dummy I kick hippies

    Escondido, CA
    Joined:
    Dec 5, 2004
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    646
    Thanks for backing me on that, Sparky. The funny thing is the guy who owns the blue CJ on Thornbirds I used as the lead photo agrees - they're garbage. He's saving up for new rubber as we speak.

    As to you question, there's nothing wrong with running two different types of tires front to rear. I'd just suggest you make sure the diameters are very similar unless you're only running in loose sand or mud. Any hard pack rock, etc. will put you into t-case bind if you run two different brand tires that spec out at different diamters. For example, most Swampers I've run actually measure up anywhere from 1-to-2 inches shorter than what the sidewall says. Goodyear MT/R, Maxxis, and a few others are pretty close to the advertised sidewall. If you really feel you must run 2 dissimilar tire sizes, play with the air pressure to get 'em as close as you can when running in 4WD on hard pack.

    Post up what kind of terrain you're going to be wheeling and you'll get better recommendations.

    For the record, I agree the TSL Swamper is one of the best all around performing tires - as long as you don't have to drive it on the street.
     
  16. Mar 23, 2007
    cj6np435

    cj6np435 New Member

    OZ
    Joined:
    Jul 26, 2006
    Messages:
    28
    I think both your selections are toooo wide
    I have 33x15.50x15tslsx's on my cj6
    and I have tried them in all types of terrain from sand to slick clay hills, loose rocks and just plain rocks, sure they grip when you let them down on rocks you know aren't going to move, and they're ok on san because the vehicle is so light, but slick clay hills and loose rocky slopes they are useless
    go 35x10.5 or 35x11.5 IMHO
     
  17. Mar 23, 2007
    bigben

    bigben New Member

    carlisle PA
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    Feb 21, 2007
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    I dissagree you want something with as big a foot as possible. why do you explain big floatation tires on tractors that farm wet fields?
     
  18. Mar 23, 2007
    firegod33

    firegod33 Member

    Grand Junction, CO
    Joined:
    Jul 7, 2003
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    I've got LTB's on my '77 CJ5. I love them! My '67 CJ5 is going to get Bridgestone Dueler MT's. They're a little spendy, but I ran them on an XJ, years ago, and they were a fantastic tire, too.
    Thornbirds.... worse than useless.
     
  19. Mar 23, 2007
    cj6np435

    cj6np435 New Member

    OZ
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    well sure flotation is all the go when you have a softish surfce with slop underneath, and how heavy is a tractor compared to a CJ, it's all about ground pressure, but if you want to bite through to a solid surface......
     
  20. Mar 23, 2007
    bigben

    bigben New Member

    carlisle PA
    Joined:
    Feb 21, 2007
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    I guess it is a bad analogy.

    I had skinny snow tires on my jeep and tried a hill climb in the mountian. couldn't make it. the next year I got new wider mud tires for the jeep and they did there job. I think the key is to have a self cleaning tires.
     
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