Mounting HDAP Tires
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Thread: Mounting HDAP Tires

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    Mounting HDAP Tires

    I got a pair of HDAP tires for the rear of my X475. I grew up on a farm & changed lots of larger tires over the years, so I thought this would be a breeze.
    I got the old tires off & the new tires on the rims fine.

    The problem is that the beads of the HDAP tires are only 5" apart. The rims are 10 inches wide. How do I spread the tires enough to even get a chance at getting them to start holding air?

    Are the HDAP tires really meant to go on narrower rims?

    I have never run into anything like this before.
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    RRMCCABE's Avatar
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    I installed HDAPS on my 345 a couple years ago. I had the same issue. Used a small tie down fabric strap in the middle of the tire and cranked it down to spread the beads. Worked fine but took a good shot of air and about 3 attempts to get it to seal.

    Quote Originally Posted by ChrisR View Post
    I got a pair of HDAP tires for the rear of my X475. I grew up on a farm & changed lots of larger tires over the years, so I thought this would be a breeze.
    I got the old tires off & the new tires on the rims fine.

    The problem is that the beads of the HDAP tires are only 5" apart. The rims are 10 inches wide. How do I spread the tires enough to even get a chance at getting them to start holding air?

    Are the HDAP tires really meant to go on narrower rims?

    I have never run into anything like this before.
    1967 John Deere 110 (round fender) tiller & Model 80 Cart
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    has15's Avatar
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    I see one of three ways to do this. 1 try the rachet strap around the tire and slowly releise it when and if the tire starts to fill air, 2 try at your own risk, squirt some either in to the tire and spark it, it works but scary the first and every time you do it. Or 3 the safest way you have done the hard part, take the wheels and tires to the tire shop and have them set the beads for you.
    Good luck with what ever way you choose.
    Jeff


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    Thanks for the help. I tried a small & large ratchet straps. They did not work because the beads have to spread to far.

    I am not going to try the starting fluid method. I watched some videos on youtube of people doing that. Some people make it look very simple & some make it look like a nightmare.

    I will go to the tire shop in the morning.
    Kioti CK3510SE HST, Kioti KL4030 Loader, John Deere 655 Tiller, Frontier LR2072 Landscape Rake, Virnig V50 Pallet Forks, Woods GB60 Box Blade
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    56FordGuy's Avatar
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    Quote Originally Posted by ChrisR View Post
    Thanks for the help. I tried a small & large ratchet straps. They did not work because the beads have to spread to far.

    I am not going to try the starting fluid method. I watched some videos on youtube of people doing that. Some people make it look very simple & some make it look like a nightmare.

    I will go to the tire shop in the morning.
    Wise decision. I've done many tires of varying sizes over the years with starting fluid, never had a problem. Given the option now, if it comes down to the spray or the tire shop, it goes to the shop. Not worth the risk or hassle.
    -Blake

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    T-Mo's Avatar
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    You didn't say what size tires you are putting on. Some tires are too narrow to go on wider rims, and if they do fit, then they may not perform as well as expected. If the new tires have the same size, i.e. 23 x 10.50 x 12 (the 10.50 is the width) then they should fit, but remember they're not broken in and probably will be stiffer. Also, number of plies will make a difference.

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    Quote Originally Posted by T-Mo View Post
    You didn't say what size tires you are putting on. Some tires are too narrow to go on wider rims, and if they do fit, then they may not perform as well as expected. If the new tires have the same size, i.e. 23 x 10.50 x 12 (the 10.50 is the width) then they should fit, but remember they're not broken in and probably will be stiffer. Also, number of plies will make a difference.
    The new tires are the same size as the old tires. 26 x 12 x 12. They are the same tires that come on the new X700 series 4x4 garden tractors.
    The problem is that the sidewalls curve in a lot. As I said above, there is only 5" between the beads on the tires & the rims are 10" wide. There is plenty of flex in the sidewalls.
    If I could get one bead set, then I could push the rim through to get the other side to seal enough to get the tire to hold air.
    Kioti CK3510SE HST, Kioti KL4030 Loader, John Deere 655 Tiller, Frontier LR2072 Landscape Rake, Virnig V50 Pallet Forks, Woods GB60 Box Blade
    John Deere X739 AWS 4X4, 60HC Auto Connect Deck, Front grader blade.
    John Deere 825i Gator

    John Deere Tractors I have owned in the past.
    425 AWS, 455, 4400, 2210, 4710, 2320, 2720, X475, 1026R, 4120, 2025R

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