Advertise on Bikeforums.net



User Tag List

Results 1 to 17 of 17
  1. #1
    Senior Member d8168055's Avatar
    Join Date
    Apr 2010
    Location
    The OC
    My Bikes
    2010 Mercier Kilo WT, 2011 Specialized Tarmac Pro SL3 Red
    Posts
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    My first flat tire, now not rolling straight after repair

    So, I just got my first flat tire today (yes, been riding only 3 or so months). A quarter-inch nail went straight thru to the tube of my rear tire.

    I go to Performance and get a Forte tube replacement, install it, and now the tire seems to roll unevenly. I feel a rhythmic bump as I pedal, and it gets faster as I pedal faster. When spinning the rear tire, I can see that there are some flatter areas, thus probably leading to the unsmooth ride.

    Does this mean it's time to get a new tire? Was it damaged as I was riding on it flat for a short distance? Or is the tube crap and uneven in certain areas? Is my rim bent?!!

    Note: The puncture on the tire was not patched. I have 700x32c Kenda Kwikrollers and the Forte tube.

    Thanks.
    Last edited by d8168055; 06-03-10 at 02:05 AM.
    2010 Pearl White Kilo WT
    2011 Specialized Tarmac Pro SL3 SRAM Red
    2012 State Bicycle The Contender

  2. #2
    GONE~
    Join Date
    Apr 2010
    Posts
    6,745
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Your tire is okay, however your rim might not be though.
    Take picture of your wheel for us.

  3. #3
    Senior Member d8168055's Avatar
    Join Date
    Apr 2010
    Location
    The OC
    My Bikes
    2010 Mercier Kilo WT, 2011 Specialized Tarmac Pro SL3 Red
    Posts
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The wheel seems to roll fine. I follow the contours of the outer rim and its round. The outside of the tire however, its like rolling hills, some parts of the diameter will get fatter than other parts..
    2010 Pearl White Kilo WT
    2011 Specialized Tarmac Pro SL3 SRAM Red
    2012 State Bicycle The Contender

  4. #4
    GONE~
    Join Date
    Apr 2010
    Posts
    6,745
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Oh, if your tire is bulging, then just simply remove your tire, reinstall your tube. Make sure it is not caught between the tire bead and the rim.
    Did Performance installed it for you? If so, take it back and they will fix it for you. If you did it yourself, then just reinstall the tube.

  5. #5
    Senior Member
    Join Date
    Feb 2010
    Posts
    59
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I am thinking that you twisted it at some point. I just don't know why it didn't pop already. What pressure are you going with? Just reinstall making sure that it is in correctly and check after you put it about 10 to 20 pounds. deflate and repeat.

  6. #6
    Senior Member d8168055's Avatar
    Join Date
    Apr 2010
    Location
    The OC
    My Bikes
    2010 Mercier Kilo WT, 2011 Specialized Tarmac Pro SL3 Red
    Posts
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i am running 70 PSI... even if the tube is under the bead, wouldnt it slide into place after some air is in it??
    2010 Pearl White Kilo WT
    2011 Specialized Tarmac Pro SL3 SRAM Red
    2012 State Bicycle The Contender

  7. #7
    coasterbrakelockup lz4005's Avatar
    Join Date
    Nov 2004
    Location
    parts unknown
    My Bikes
    surly steamroller w/coaster brake, electra single speed cruiser, specialized rockhopper commuter, no-name single speed folder, 700c ultimate wheel, 24" unicycle, specialized bmx lsd, single seat single speed huffy tandem, pink upsidedown parade bike
    Posts
    825
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by d8168055 View Post
    i am running 70 PSI... even if the tube is under the bead, wouldnt it slide into place after some air is in it??
    If it was under the bead it probably would have failed already. You probably have a twist or kink in the tube. Regardless, it isn't in there the right way. Take it out and reinstall and it should be fine.
    Ride lots, have fun, skid often!

  8. #8
    Senior Member Yellowbeard's Avatar
    Join Date
    Mar 2009
    Location
    Ontario
    Posts
    735
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Either your tire isn't seated correctly or the casing is damaged from the puncture. If it bulges at the hole and you can see a cut in the threads then the tire's toast; it'll explode eventually. If it's not seated correctly you just need to learn to seat it correctly.

    Tips: Make sure you push the valve outwards so that the reinforced part of the tube doesn't block the bead from seating in the rim.

    Before putting any air in it go around the wheel once, pushing the tire from side to side. If you can see your rim tape all the way around (and on BOTH sides) then you can be sure that the tube is not pinched between the bead and the rim. If it is, it'll explode eventually.

    If parts of the bead still end up too low, let most of the air out and use your thumbs to roll the tire away from the rim until the bead pops into place.
    I'll eat it first.

  9. #9
    .;/., cleanupinaisle3's Avatar
    Join Date
    Sep 2009
    Location
    Toronto
    Posts
    576
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Yellowbeard View Post
    Tips: Make sure you push the valve outwards so that the reinforced part of the tube doesn't block the bead from seating in the rim.

    This.
    Quote Originally Posted by plowmanjoe View Post
    jackass basket angle
    ---->http://i12.photobucket.com/albums/a2...1thumbnail.jpg

  10. #10
    yesterday you said tom.
    Join Date
    May 2009
    Location
    Brooklyn, NY
    My Bikes
    Bianchi Pista 07, Dodici Veloce
    Posts
    457
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i am running 70 PSI
    Geez 70 PSI? when you correct this issue, pump your tires up to at least 90 or 100 PSI.

  11. #11
    Senior Member Yellowbeard's Avatar
    Join Date
    Mar 2009
    Location
    Ontario
    Posts
    735
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by whitekimchee View Post
    Geez 70 PSI? when you correct this issue, pump your tires up to at least 90 or 100 PSI.
    Assuming, of course, that you weigh 220+ pounds. Dude says he's on 32 mm tires.
    I'll eat it first.

  12. #12
    Senior Member turtle jesus's Avatar
    Join Date
    Mar 2010
    Posts
    74
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    how and the hell did you get a flat walking your fixie to your java lounge?
    SS&FG is like a big pillow fight with designer colostomy bags

  13. #13
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
    Posts
    23,938
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Vixtor View Post
    Oh, if your tire is bulging, then just simply remove your tire, reinstall your tube. Make sure it is not caught between the tire bead and the rim.
    I agree that's almost surely the problem. Examine both sides of your tire bead around it's entire circumference. There's usually a small ridge moulded into the tire that should be equi-distance from the rim all the way around. I'm betting that your's isn't.

    Common causes, as other posters have already mentioned, are having a small section of the tube caught under the tire bead and having the thick area adjacent to the valve stem caught under the tire bead.

  14. #14
    Senior Member d8168055's Avatar
    Join Date
    Apr 2010
    Location
    The OC
    My Bikes
    2010 Mercier Kilo WT, 2011 Specialized Tarmac Pro SL3 Red
    Posts
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I reinstalled the tube and it seems to be ok now. thanks for helping out a newbie...

    Quote Originally Posted by whitekimchee View Post
    Geez 70 PSI? when you correct this issue, pump your tires up to at least 90 or 100 PSI.
    the PSI range on the tire is 75-100 max.. and when riding with 75, its rock hard, ie, ramping minor bumps... so, i keep it at 70... maybe because also i have 32C tires and it needs less pressure?
    2010 Pearl White Kilo WT
    2011 Specialized Tarmac Pro SL3 SRAM Red
    2012 State Bicycle The Contender

  15. #15
    Senior Member Yellowbeard's Avatar
    Join Date
    Mar 2009
    Location
    Ontario
    Posts
    735
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by d8168055 View Post

    the PSI range on the tire is 75-100 max.. and when riding with 75, its rock hard, ie, ramping minor bumps... so, i keep it at 70... maybe because also i have 32C tires and it needs less pressure?
    Yes.
    I'll eat it first.

  16. #16
    Delusional Laserbrain Germanicus's Avatar
    Join Date
    Jul 2009
    Location
    South Orange, NJ
    My Bikes
    2008 Specialized Tricross, 1993 Giant Iguana rebuild w/ singlespeed drive train
    Posts
    396
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    That happened to me once on the road. The problem was that I tightened the ring that secures the presta valve to the rim BEFORE I inflated the tire. That didn't allow the the tube to settle into place as I inflated it. The sucky part was that I got the flat 50 miles into a 140 mile bike trip and only had one extra tube. (newbie mistake) I was so afraid that I might pop the tube if messed with it again that I rode the last 90 miles with the back tire going thumpity-thumpity-thumpity.... Which really sucked all the joy out of the ride.
    Now I carry multiple tubes on longer rides.

  17. #17
    Veteran Racer TejanoTrackie's Avatar
    Join Date
    Jul 2009
    Location
    Ciudad de Vacas, Tejas
    My Bikes
    28 frames + 73 wheels
    Posts
    7,854
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Germanicus View Post
    That happened to me once on the road. The problem was that I tightened the ring that secures the presta valve to the rim BEFORE I inflated the tire.
    Those threaded "rings" are utterly useless and should be discarded. If you snug them down after tube inflation and then get a flat out on the road, they can get so tight that you can't get them off to change the tube. Also, when that happens, it can pull so hard on the joint between the tube and valve stem that it cracks the joint causing a leak, rendering the tube unrepairable. Many presta tubes do not even have threaded stems and valve extenders never do. Another thing I always discard are presta valve caps. They're just decoration.
    What, Me Worry? - Alfred E. Neuman

    Quote Originally Posted by Dcv View Post
    I'd like to think i have as much money as brains.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •