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Tire Question

Discussion in 'Trucks' started by JTKenworth, May 29, 2011.

  1. Birken Vogt

    Birken Vogt Charter Member

    Joined:
    Nov 30, 2003
    Messages:
    4,462
    Location:
    Grass Valley, Ca
    Of the Chinese brands, Double Coin seems to be pretty mainstream nowadays.

    We ran caps where I worked and had them capped in Oliver Waste Hauler Lug. Big knobby mud tires and they worked great in mud and in snow they were almost like having chains on a regular tire.

    I had capped as many Double Coin as I did Toyo and American brands and never had one pop. We would run steers out and cap 3 times over before junking.
     
  2. Truck Shop

    Truck Shop Senior Member

    Joined:
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    Occupation:
    star gazer
    Location:
    SE Washington St
    We run DC 400 drive tires-average 170,000 on a set. We bought all the Double Coins we could because there is a tariff that's been enacted and you won't be able
    to get them, by the info I was told.

    Truck Shop
     
  3. tireman

    tireman Senior Member

    Joined:
    Apr 19, 2011
    Messages:
    264
    Location:
    St.Louis,Mo.
    You need 10R22.5's (the actual equivalent to 9.00-20)on 22.5 X 7.50 wheels. Probably have a 22.5 X 8.25 wheel right now. Put the right thing on there and it'll fit without spacers or offset or any other unnecessary contraptions. You put a bigger tire and wheel on there than what you had is why you have a problem.
     
    Last edited: Oct 15, 2016
  4. Marrowthirst

    Marrowthirst New Member

    Joined:
    Jan 19, 2017
    Messages:
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    Location:
    Tucson
    Using a 8.25 rim instead of 7.5

    Tireman, I read your post and you seem very knowledgeable. I am a simple novice wanting to be pointed in the right direction. I have a 1976 Loadstar 4x4 with Dayton rims and 9.00x20 tires - it was an Army truck before I owned it. I have the same situation as the other person above with 9.00x20 rotted tires and I want to go tubeless. Based on what you have said I should change my rim to 22.5 x 7.5. That size rim is hard to find from all the places I looked at or called around. It seems 22.5 x 8.25 is the more common rim. I can buy new Accuride rims 22.5 x 7.5 but I will have to pay a lot more than new or used 8.25 rims. Am I right in reading I would have troubles (like the poster above did) by using 8.25 vs the 7.5 rim? If I did go with the 8.25 wouldn't I need to go with a different spacer also?

    Another forum on the subject by someone named ModMechwrote this: The 10R22.5 tire will mount well on either a 7.5" or 8.25" Drop Center Dayton rims. There are two VERY important reason to buy the 8.25" rims: 1) They are MUCH cheaper than the 7.5" rims, and 2) You can mount 11R22.5 tires on the 8.25" rims but NOT on the 7.5" ones (safely). The 11R22.5 tires cost about 10% more, but are actually worth MONEY used and tread life is about 100% improved (same tire brand and model).

    But, if I am reading things correctly I should stay away from 8.25 because my loadstar was designed for the 7.5 wide wheel and I cannot incorporate the 8.25 wheel without compromising something.

    I appreciate your advice on steering me to a wiser decision. While I would like to use an 8.25 wide rim for the reasons noted above I just am not sure that will work for me. Thanks in advance for you help.
     
  5. tireman

    tireman Senior Member

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    Apr 19, 2011
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    Location:
    St.Louis,Mo.
    First of all you can safely mount 11's on a 7.5 wheel(8.25 is recommended/7.5 is approved(exactly opposite for 10's - 7.5 recommended, 8.25 approved). The 8.25 is cheaper because it is the more common size. The tread life statement made by the novice is asinine. 11R22.5's are worth more in any condition because they are more common and carry more weight.
    As for your vehicle, all I can tell you is fit them up & check clearances. Optimally 10's on 7.5's is best but if 8.25's clear you may save some $ on wheels. You won't need to change spacers just because of wheel width. The spacer relates to the wedges and hub width, not wheel width.
     
  6. Willie B

    Willie B Senior Member

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    Occupation:
    Electrician
    Location:
    Mount Tabor VT
    If your truck is X military, I bet it has some insanely tall gear ratio. Taller tires would be a small step in the right direction. If your wheels are good, I bought 10.00 X 20 Double Coin traction tread for my 1976 Chevy. They are a great tire! My local dealer handles Double Coin, but told me they weren't available in my size. A dealer in Maine had them in two days.

    Willie
     
  7. Marrowthirst

    Marrowthirst New Member

    Joined:
    Jan 19, 2017
    Messages:
    2
    Location:
    Tucson
    Thanks for the quick reply.

    Good information for me and very helpful to know the spacer on the dually is not a factor due to the rim width. I plan to do the measurements to see what my truck can safely accommodate.

    Also, I checked on a Double Coin dealer and learned there is one in Tucson so I will check them out.

    The information here will help me make the most economical and safe choice...I appreciate all the knowledge you guys have and willingness to help out.
     
  8. tireman

    tireman Senior Member

    Joined:
    Apr 19, 2011
    Messages:
    264
    Location:
    St.Louis,Mo.
    Glad to help. Best of luck & keep us posted on your progress. I'm never on the Forum anymore unless I get an email notification to checkout so if you start a new thread shoot me a message.