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Thread: ATC 90 front rim/tire help

  1. #1
    bmw1 is offline New to the board Arm chair racerNew to the board
    Join Date
    May 2018

    ATC 90 front rim/tire help

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ID:	254539The 90 I have has knobby tires on it all the way around.

    The front rim does not appear to be a split rim. The rim only has 3 bolts for the hub and that is all.

    I cut the tire off because it wad dry rotted so bad. It had a tube in it as well. There are also what looks like o rings next to the bead. They are the thickness of a small belt. The rear tires did not have this "ring" next to the bead when I replaced those and the rear rims did split.

    It doesn't "look" like the front rim can be split. Is this normal? Is there a procedure for changing these tires? Does the front require a "special" tire?

    The frame indicates a US90 so I think it may have originally had the balloon tires. Someone put the knobby tires and split rims on and I have no idea what kind of machine they came from.

    Last edited by bmw1; 09-14-2018 at 06:15 PM. Reason: Adding pictures

  2. #2
    Join Date
    Jun 2010
    Cold Lake, Alberta, Canada
    I believe those are just there to strengthen the original OHTSU tire beads. You should be able to mount an aftermarket tire back on there with no issues.
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Resto Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1984 Big Red 200es w/85 250 front end
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool

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