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Tire/axles size servey!!!

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by Rasberry, Jun 27, 2001.

  1. Rasberry

    Rasberry 1/2 ton status

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    Whats size tires do you have on what size axles 1/2, 3/4, 1 Ton? If you have 1/2 ton whats the biggest you'll go.

    I have 35" BFG mud terrian with 3.73 gears. I no longer use my Blazer as a daily driver so I'm going to upgrade to some bigger super swampers.

    I was thinking 36X14.50 or 38's. Will the 38's give me much trouble. I know lower gears will help with the bigger tires but gears will have to wait for now. I don't want to be replaceing u-joint and axles everytime I take the truck out.

    What do you guys think on this matter?

    Rasberry 71' K/5 Blazer
    <A target="_blank" HREF=http://www.geocities.com/71blazer>http://www.geocities.com/71blazer</A>
     
  2. blazin72

    blazin72 1/2 ton status

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    I run 35-12.50-15 on my stock 373 gears and stock axles.
    I wouldnt go over 36's on stock axels looking for problems.
    But then again it depends on how much and how hard you wheel.
    Just my opinion.
    Blazin72


    Blazin 72
     
  3. 1_FN_HI_K5

    1_FN_HI_K5 Registered Member

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    I am running 44x18.5x15 super swampers on my 72 blazer with a dana 44 reverse rotation 1/2 ton axle with 5-13 gears up front
    and a dana 60 rear.
    It all depends on what you like and how much MONEY you are willing to spend for all the up grades to run such a tire.

    1 FN HI K5
     
  4. arq

    arq 1/2 ton status

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    I run 31x10.5 on stock axels and that's the biggest I'll go, no wait i think i got 33x12. I think i need a gear upgrade now, some 3.73s. na, mabe i need axel upgrades and 35. that's the biggest I'll go. this just never ends, does it.

    ARQ.

    1-72 4x4 CST Blazer
    2-71 4x4 CST Blazer
     
  5. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color=blue>I have 36x12.5x15 Swamper Radials and 3/4 ton axles with 4.10 gears. I wheel it hard and broke my 1/2 ton stuff a lot when I ran 33s. I havent had a chance to abuse it that much with the new setup but it should hold up a lot better.</font color=blue>
     
  6. not4show

    not4show 1/2 ton status

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    I run 35s on a Dana 60 front and a 14 bolt rear. You could get away with 35s on half ton running gear, maybe even 38s if your careful. That's just my thought on it.
     
  7. Burt4x4

    Burt4x4 3/4 ton status

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    Ask your self what kind of off road driver are you?
    Do you love to hammer down when trying to climb something or do you first try to crawl up that hill? It is my .02c that if you are running stock D44 front and stock 12bolt rear with 3.73s then 35" is your max. Now if you have 'beefed up' your stock axel housings with aftermarket axel shafts and stuffed in a nice posi or locker and do a gear swap to 4.11 or 4.56 then thoes 1/2ton axels could handel mabie 36" or 38" Swamper. 38" would be pushing it a bit but with good driving tecniques you could servive the trail just fine.
    I am running 33" on D44front w/Warn axels & DanaPower-Lock w/4.09 R&P. The rear is a Dana60 w/MarkWilliams axels & DanaPower-Lock w/4.11 R&P. Someday I may step up to a 35"SSR Swamper but I realy like the torque I have to the 33s at the ground right now. Lots of grunting and lurching......[​IMG]


    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.geocities.com/baja/5099>http://www.geocities.com/baja/5099</A>
     
  8. californiak5

    californiak5 1/2 ton status

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    Wait just a minute buuuudy.

    What the he(double)l is this someday stuff. I thought you had the green light from the boss and were already to get the SSR's. I wanted to see your rig sitting on those by x-mas and now your telling me that I might not be able too. I think I need a beer....[​IMG]...............Oh.....that's right..........it's only 7:15. I guess I will stick with my coffee for now. [​IMG]

    See YA Bro,
    Keith

    [​IMG] <font color=green>Born to Drive My K5</font color=green> [​IMG]
     
  9. FRIZZLEFRY

    FRIZZLEFRY 1/2 ton status

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    Ive got a Dana 44/12 bolt .Couldnt swing the molly shafts for the 44 but I did install an Auburn and 4.10s when it was rebuilt.In the rear I got Moser shafts a Detroit and 4.10s.I mostly play on the rocks and Im not a gas & bash type guy.I think the biggest I would go would be 36 or 37x12.5.

    <A target="_blank" HREF=http://community.webshots.com/user/beaterwhang>http://community.webshots.com/user/beaterwhang</A>
     
  10. Rasberry

    Rasberry 1/2 ton status

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    My Blazer is mostly used for slinging mud, theres not much for hills or rock climbing in the middle of Florida. I don't bash around to much. I just need to know if these axles can handle turning 38" all day.
    But I must say these 35" BFG M/T have been quite impressive in the mud.


    Rasberry 71' K/5 Blazer
    <A target="_blank" HREF=http://www.geocities.com/71blazer>http://www.geocities.com/71blazer</A>
     
  11. Burt4x4

    Burt4x4 3/4 ton status

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    LMFAO hehehehee, Yes I still have a green light! BUTT I didn't buy the first one yet and that 200 bucks just got sucked up from my damn steering box taking a crap on me[​IMG]!!!
    SO.....I still hope to have all 5 before X-mas...... Ya know I am thinking of sticking with 33"ers too...........Just gives a bit more power to the ground and less stress on the axels......

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.geocities.com/baja/5099>http://www.geocities.com/baja/5099</A>
     
  12. Steve_Chin

    Steve_Chin 1/2 ton status

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    Burt4x4 - you should get a 5-speed into that Blazer of yours too... Those 4.10:1 gears must be heck on the freeway...
     
  13. Burt4x4

    Burt4x4 3/4 ton status

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    Ya I would like that 5speed you have! Someday mabie, for now the sm465 will have to do I am turnin 2800 at around 60-65 so thats as fast as I can go but my speedo is messed up too so don't really know how fast I am going....

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.geocities.com/baja/5099>http://www.geocities.com/baja/5099</A>
     
  14. Rasberry

    Rasberry 1/2 ton status

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  15. RingMaster4x4

    RingMaster4x4 1/2 ton status Premium Member

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    I am running 40" tires with a D60 front and a 14B rear with 4.56 gears.

    If you build it, the mud will fly!
    72 K5 blazer 1 ton with a 427 tall deck and TH350/NP205 and 12"of lift with 40"tires.
     
  16. Burt4x4

    Burt4x4 3/4 ton status

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    Hey cool 66.9 MPH at 2800rpm.
    Thats a nice calculator! It even has the charts to figure in the trannie and xfer case..Coool!! [​IMG]

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.geocities.com/baja/5099>http://www.geocities.com/baja/5099</A>
     
  17. Steve_Chin

    Steve_Chin 1/2 ton status

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    Oops... Forgot to post my whimpy running gear:

    All half ton running gear (D44 front, GM Truck 12-bolt rear). 32x11.50-R15 Bridgestone mudders on 15" x 10" Eagle wheels. No lift (yet). I will probably be going to 33" or 35" tires when I get lift. I wish some tire company would make 34" tires because the 33" tires are really close to being just right for my needs and the 35" tires are a little on the big side. Oh, well...
     
  18. Triaged

    Triaged 1/2 ton status

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    I've got 1/2 ton running gear (D44 & 12Bolt) and 36x12.5 Supper Swampers (which I just got this week). I have a 4" lift and the tires rub. Even when driving on the street! The fenders will be cut before I take it out to have fun in it. I also have 3.73 gears and it is now a dog off the line (I could peel out 33's). Time for a axle swap w/ 4.10 or 4.56.

    '71 Blazer CST with alot of rust
     
  19. Rasberry

    Rasberry 1/2 ton status

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    Triaged, do you have pic of your new tires I could see. I'm riding on a 6 inch lift so I don't think they will rub. I think I'm going to go with the 36" swampers.

    Rasberry 71' K/5 Blazer
    <A target="_blank" HREF=http://www.geocities.com/71blazer>http://www.geocities.com/71blazer</A>
     
  20. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Hey Steve, did you actually measure the tire's loaded radius for your calculation? My 35's measure a true 33" and a bit...

    My 36" Swampers on the other hand measure over 35 1/4" and they only have 30% or so left on em...

    BTW I haven't had a speedo for 4 years now, I have figured my speed with the tach for so long i'm usually within a couple of MPH of where i should be when it counts.[​IMG]

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     

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