Whats wrong with 16.5 inch rims?

Discussion in '70-Series Tech' started by Bambino840, Mar 13, 2010.

  1. Bambino840

    Bambino840 Jive Turkey SILVER Star

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    I am looking for tires for my 85 bj-70. In the past I have always run swampers. I have found it is much easier to find 33x15 r 16.5 than the 15" rim I am used to. Is there something wrong with this rim. Is it rare? Does it air down well? Please help?

    Dean:beer:
     
  2. D'Animal

    D'Animal Rescuer of Beagle and Landcruisers Moderator

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    Finding larger sized tires in the 16.5" rim is kinda hard in the USA.
     
  3. arm and hammer

    arm and hammer

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    H 1 Hummer runs on 16,5 inch rims and tires . How common is that truck? In military surplus centers you will find these tires for next to nothing.
     
  4. roscoFJ73

    roscoFJ73

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    Isnt 16.5 an odd size ,unless all 16 are really 16.5 ?

    In oz,16 is the new 15
     
  5. Bambino840

    Bambino840 Jive Turkey SILVER Star

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    16.5 is a size made by super swamper. I can get a brand new set for really good deal but I am hesitant due to the lack of other people not having them. What do you think?
     
  6. hoser

    hoser SILVER Star

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    I've heard the 16.5" wheels don't air down as well because a difference in the bead (angle). :meh:
     
  7. Bambino840

    Bambino840 Jive Turkey SILVER Star

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    I vaguely remember this to. So tempting but I will have to keep looking.:beer:
     
  8. Radd Cruisers

    Radd Cruisers

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    The do not have a bead seat lip in the rim and use air pressure only to hold the bead on.

    They are NOT appropriate for off-roading as a result. Don't waste your time with 16.5s...


    ~John
     
  9. Clint79

    Clint79

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    arnt 16.5 bobcat tyres size
     
  10. toomanymachines

    toomanymachines

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    16.5 is almost obsolete... stay away from them they have a tapered bead that will cause you greif.. If you ever wreck one you will not be able to find one quick anywhere.
    they were used back around 1970 on 3/4 ton trucks. after that split rims in 16 inch came out and then around 1975 or so we all got he regualar drop centre 16" wheel..
     
  11. Clint79

    Clint79

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    a mate of mine had two 33x12.5 16.5 tyres on his nissan patrol 16" rims one tyre shop put them on no probs the next tyre shop said it was dangerous as
    i have a pic of the tyre on the rim on other computer
     
  12. jake2far

    jake2far

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    Here is a reference from a company who makes bead locks.

    High Impact Beadlock Wheels or 16.5in Beadlocks?

    16.5” wheels simply cannot be properly locked in the manner that works well on 15” and 17 Inch wheels. This is due to the design of the bead area. On 15” and 17” wheels, the bead pushes out onto a shaped surface. The tire has a soft lip that presses down on the inside diameter of the wheel. This inside diameter extends in about 1” on one side, and about 2.5” on the other side (The “large bell” of the wheel). This area, along with a raised area formed into it is called the “safety bead”. It helps keep the tire on the wheel even at lower tire pressures. That means that if we put a lock on the outside, the inside bead can still move in 2.5” (with the Large bell on the inside) before the bead will fully blow. Since most of the forces which unseat a bead are on the outside, it is practical to beadlock 15 and 17” wheels. On a 16.5, however, the design is such that if the bead is moved off the inside bead area at all, you will blow the bead. There is no “safety bead” area. It relies entirely on air pressure to keep the bead seated. I have seen companies that will beadlock a 16.5, but they are fooling themselves (or somebody). Unless they lock both the inside and the outside, it will blow the inside bead way too easy. It is also not usually practical to put a lock on the inside, as it will not clear the brakes or steering in most cases.


    Jim
     
  13. arm and hammer

    arm and hammer

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  14. Clint79

    Clint79

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    this is a factory 16' nissan pootrol rim with as you can see 16.5' tyre
    01072008(001).jpg 01072008.jpg
     
  15. roscoFJ73

    roscoFJ73

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    What year/model is that off?
    I always thought they were the same as toyota
     
  16. Clint79

    Clint79

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    Not to sure of the year mate but there of gu utes not sure if the wagons got them or if wagons just got 16x8 alloys
     
  17. Malahki

    Malahki GOLD Star

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    DO NOT MOUNT 16.5" TIRES ON 16" RIMS
    I cant believe any tire shop would do this. Many people have been killed trying. Check out what happens when it goes wrong
    YouTube - Tire explodes
     
  18. arm and hammer

    arm and hammer

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  19. Clint79

    Clint79

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    yes the first tyre shop man did it proberly didnt even look at the size and the second tyre shop dude said it was dangerous as etc
     

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