UHD Tubes on the Road.

Discussion in 'Parallel Universe' started by zack753, Jun 19, 2017.

  1. zack753

    zack753 Adventurer

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    Changed tires the other day, and found that the front inner tube, an ultra heavy duty, was stuck good to the inside of the tire. After ripping it out, I found an odd blistering along the outer part of the tube. Barely 1k on the tubes, minimal highway, mostly gentle back roads and dirt.

    Anyone seen this? I've heard of HD tubes generating heat at speed on the road, but if that's what this is, it sure doesn't take much to melt them. [​IMG][​IMG]

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  2. BygDaddee

    BygDaddee Where do I get a pie

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    Thats why i wont use UHD tubes on Adventure bikes, HD is the way the go
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  3. ErikMotoMan

    ErikMotoMan Mourning # 69 - the last American Champion

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    Could you please identify the brand ? Made in China ?
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  4. The Colonel

    The Colonel more riding than reading

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  5. zack753

    zack753 Adventurer

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    There's a few threads on here discussing this being a thing. I'm not sure if my pictures are evidence of that, or caused by something else. If this is an example, however, it's interesting to me that it happened so quickly at sub highway speeds.

    I'll check the mfg when I get home, I didn't mount the old tires.

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  6. zack753

    zack753 Adventurer

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    Just checked. It's a a Michelin, the same one The Colonel linked. 90/90-21 UHD, made in Serbia.

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  7. The Colonel

    The Colonel more riding than reading

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    Do the tires matter? Was literally going to put the UHD tubes in tomorrow with new TKC 80s for a Montana trip.

    Sounds like I should stick with HD tubes and get a good patch kit :)


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  8. sorebutt

    sorebutt Long timer

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    Did you put talc on the tube before you installed it?
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  9. zack753

    zack753 Adventurer

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    Not sure, I didn't mount that tire. It feels like it's got a bit of a coating to it, though that could just be what's left of the dusting that comes on new tubes. I would expect they did though, as those thick tubes are a super pain to fit dry.

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  10. BygDaddee

    BygDaddee Where do I get a pie

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    what pressures did you run the tyres at
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  11. zack753

    zack753 Adventurer

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    32/35 per BMW spec. Never bothered to air down for the occasional dirt road.

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  12. shinyribs

    shinyribs doesn't care

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    The thickness of the tube has nothing to do with the outer surface getting chaffed. Those aren't blisters, they are little balls of rubber that's just stuck to the outside of the tube. They're a result of friction, so a dry tube or low air pressure. They'll scrape off with your fingernail.

    I used get them all the time on the rear of my XR. I only run about 8-10 psi on that tire. Until I switched away from talc.

    "Lubing" the tire with talc helps, but I prefer to actually use something greasy. Hand cleaner haid been working well for me. I've been chaffe free for a long while now.
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  13. sieg

    sieg Wearing out tires......2 at a time, day after day.

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    Yeap, little balls of rubber, I've seen them lots of times, on UHD tubes. I just go around the tube with a rough wood rasp to remove them. I too think the talc makes it worse, but never really thought about it much. I don't see it as a problem, unless you want your tubes to look pretty. Never heard of a tube fail from it. :dunno
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  14. The Colonel

    The Colonel more riding than reading

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    I want my tubes to be the prettiest!

    Thanks for the input guys.


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  15. zack753

    zack753 Adventurer

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    These don't seem to be any kind of buildup of rubber. More like small slices. They don't pick off either, you can grab them and peel a piece of the tube away. If they're built up rubber, then they're all perfectly welded to the tube.

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  16. sorebutt

    sorebutt Long timer

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    I wouldn't worry too much about it. They are really thick. I've had tires that weren't that thick when I changed them.
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  17. Rider 101

    Rider 101 Highly paid idiot

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    Use plenty of baby ( talcum ) powder, and I mean lots! Never had the slightest problem with several WR400 - 450s and the F8. Talc is a dry lubricant and helps with the movement between the tube and tyre.
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  18. sorebutt

    sorebutt Long timer

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    Make sure you use talc. There is also a "talc" product made from organic material, like corn.
    #18
  19. ecarnell

    ecarnell Been here awhile

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    I've been using half a "tube" of this on tubes (full tube on a mousse) with great success :

    [​IMG]

    Seems to work much better than powder.


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  20. ecarnell

    ecarnell Been here awhile

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    Always a neat video :




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