Constant flats! 27.5x2.1 replace 27.5x2.25?- Mtbr.com
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  1. #1
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    Constant flats! 27.5x2.1 replace 27.5x2.25?

    I have a Yamaha YDX-TORC ebike that I use for scouting out and building new riding areas for my dirtbike. Think plowing through high grass, stickers, creeks, over logs, often while carrying a string trimmer. Fun stuff!
    Except for the flats, which I sometimes get every ride. Every. Single. Ride.
    The bike came with Maxxis Ardent 27.5 x 2.25. I read that Specialized Fast Trak Armadillo might be the ticket but it's 27.5 x 2.1.
    Am I on the right track here? Will the 2.1 fit?
    I read about tire liners, is that an option?

    Thanks everyone, I appreciate the help!

  2. #2
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    RU running tubeless? If not,that would be the first thing to do.
    Do the math.

  3. #3
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    Quote Originally Posted by Lone Rager View Post
    RU running tubeless? If not,that would be the first thing to do.
    I am not, to be honest I'm not entirely sure what tubeless is. In the dirtbike world we have foam inserts, I see with mountain bikes I can also get a sealant. Tires say tubeless ready, not sure about my rims (they have what looks like a fiberglass rim strip.)
    Is the sealant what you mean?

  4. #4
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    On Google, type in, "What does tubeless mean for mountain bikes"

    Sent from my XT1585 using Tapatalk

  5. #5
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    Mtb tubeless starts with compatible rims and tires. Spoke holes in the rim are covered with appropriate tape, rim-strip or plugs. Tape is by far the most common. A hole is made in the tape and a tubeless valve inserted which has a rubber base that seals against the tape. The tire is installed, ~2-3 oz of sealant added, and then inflated. The wheel is agitated or ridden so as to distribute the sealant all over the inside of the tire. Sealant is necessary to prevent/slow air leakage through the thin carcass of bike tires.

    Generally, the sealant takes care of any small punctures from thing like thorns and small shards. Larger punctures can be plugged like you'd plug a moto tire. You can't get a pinch flat from pinching the tube, but a hard enough rim strike can cut the tire's sidewall and cause a flat. Many carry a little plug kit, and/or spare tube with them in case they get a flat the sealant won't remedy. They carry either CO2 inflator or mini pump, or sometimes both.

    Foam inserts are available, but they don't fill the tire like moto mousse inserts and don't supplant sealant and air pressure. Full mousse inserts would be too heavy and too hard to pedal. MTB inserts don't fill the tire and are used as an adjunct to provide cushioning for the rim and tire to help prevent cutting tires or damaging rims from rim strikes. The large majority of riders don't use them and they are more common among hard charging enduro/DH type riders.

    Any decent mtb bike shop can set you up tubeless.
    Do the math.

  6. #6
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    You need to set your bike up as tubeless or you need to purchase tubes that are pre-filled with sealant.
    I've had good luck over the years using Specialized air-lok tubes. They seal thorn punctures very well.

    Tubeless mountain bike is not the same as tubeless dirt bike.

  7. #7
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    +1 on tubes with sealant. It's an ebike, so weight is no factor.

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