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Old 08-29-12, 07:38 AM   #1
nevermore1701
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blew out 2 tubes

yesterday i blew out 2 tubes on my rear tire.on the third one i noticed i had a bubble in the tire. these tires are less than a month old. they are kenda black belts. do i try to make the bike shop replace or should i just suck it up and buy another tire? on a positive note.....my pump was worthless as i discovered on side of road so i did purchase a new topeak mountain morph pump and it is bad ass
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Old 08-29-12, 07:41 AM   #2
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You can asked the bike shop.
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Old 08-29-12, 07:55 AM   #3
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Hard to judge without pictures. What do you mean by "bubble" ? Is there a cut in the tire that the tube poked through and popped ?
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Old 08-29-12, 08:12 AM   #4
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looks like a 1/4 inch slice in side of tire right by the rim and this caused some of the tube to stick out. i didnt hit anything so i do not know what may have caused it
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Old 08-29-12, 08:18 AM   #5
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The fact that you are not aware of hitting anything does not mean you didn't encounter a road hazard. For example you could get a cut by running over a curved piece of broken bottle, which could flip up and cut the sidewall. That's just an example of something I can picture happening - the possibilities are endless. I can't count the number of flats I found caused by unused staples. Yet to be answered is how a staple could get into a vertical position, braced sufficiently to penetrate a tire - but it happens. A cut is not any kind of tire defect but conceivably could be caused by a bike shop person carelessly cutting open a bundle of tires.
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Old 08-29-12, 08:22 AM   #6
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Quote:
Originally Posted by nevermore1701 View Post
looks like a 1/4 inch slice in side of tire right by the rim and this caused some of the tube to stick out. i didnt hit anything so i do not know what may have caused it
Sounds like a glass cut.
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Old 08-29-12, 08:24 AM   #7
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Quote:
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looks like a 1/4 inch slice in side of tire right by the rim and this caused some of the tube to stick out. i didnt hit anything so i do not know what may have caused it
This is classic. Happens all the time.

Take a careful look at the brake shoes. Odds are one is a bit high and worn so it overhangs the rim and rubs the tire. The other possibility is that riding under-inflated flexed the tire wall against flexed against the edge of the rim where imbedded dirt abraded it enough to make a cut.

As far as a defect goes, my basic rule is cuts, gouges, grooves, etc. along the rim line aren't defects, they're caused by something. Ragged tears along the fabric ply lines (45° bias) are probably defects, unless there's an obvious outside cause.
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Old 08-29-12, 11:00 AM   #8
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i appreciate all your answers. and most of the things actually happened yesterday when i blew my first tube on my morning ride. i will just buy a new tire and be happy i can ride again. thank you all for the input \m/\m/
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Old 08-29-12, 11:17 AM   #9
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i appreciate all your answers. and most of the things actually happened yesterday when i blew my first tube on my morning ride. i will just buy a new tire and be happy i can ride again. thank you all for the input \m/\m/
Don't forget to track down and fix the cause. You'd hate to do this to a new tire.
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Old 08-29-12, 11:18 AM   #10
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Also, feel around the inside of the tire for bits of wire, or other sharp objects. Neglecting to remove those will result in multiple punctures in the same location. I use my bare fingers to do this, although others advise against it. Really small bits of wire may go unnoticed with a gloved hand. The downside is that you tend to cut yourself when you find the little bugger!
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Old 08-29-12, 11:29 AM   #11
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use a cotton ball to find the item(s) embed in the tire . that way you don't cut your fingers .
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Old 08-29-12, 11:29 AM   #12
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Also, feel around the inside of the tire for bits of wire, or other sharp objects. Neglecting to remove those will result in multiple punctures in the same location. I use my bare fingers to do this, although others advise against it. Really small bits of wire may go unnoticed with a gloved hand. The downside is that you tend to cut yourself when you find the little bugger!
I guess you didn't read the OP's last post. He's buying a new tire, so I doubt he'll find it contaminated with road debris (yet). In any case, the OP saw the immediate cause of his flats, a cut in the wall of the tire.
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