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Hit a stone this morning, two flat tyres!

Discussion in 'Commuting' started by iacula, 9 May 2008.

  1. iacula

    iacula Senior Member

    Location:
    Southampton
    Hit a stone this morning, at 25 mph two flat tyres! I suppose the pressure surge did it. Will Schalbe's stop this?
     
  2. BentMikey

    BentMikey Rider of Seolferwulf

    Location:
    South London
    Sounds like pinch flats, I'm betting that at least one of your tubes has two holes like a snakebite. If the stone is big enough, and you're going fast enough, nothing will stop this apart from avoiding the impact in the first place.

    What was your tyre pressure, and what tyres are currently on the bike?
     
  3. iacula

    iacula Senior Member

    Location:
    Southampton
    100psi, I suppose cheap Bontragers, I bought the bike new with them on.
     
  4. Mister Paul

    Mister Paul Honky

    Location:
    North Somerset
    No, I doubt whether more resilient tyres would have made a difference. I'm surprised your rim isn't damaged as well.
     
  5. iacula

    iacula Senior Member

    Location:
    Southampton
    Might be! haven't checked properly yet.
     
  6. MERV

    MERV New Member

    Location:
    The Mile End Road
    How did you get to 25?:evil:
     
  7. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    Pedal quickly of course ! :evil:
     
  8. iacula

    iacula Senior Member

    Location:
    Southampton
    Steep downhill out of Winterslow, Wilts, very pretty, no time to watch the scenery though.
     
  9. twowheelsgood

    twowheelsgood Senior Member

    Location:
    Zurich Switzerland
    "cheap Bontragers"

    Not the 25c "Selects" that come with various Treks etc?

    These things puncture if you just look at them funny in my experience, utter cra@p.
     
  10. snapper_37

    snapper_37 Barbara Woodhouse's Love Child

    Location:
    Wolves
    I had 28 selects with my Trek and didn't have a puncture for all the 12 months I owned it. They *do* look crap though :thumbsup:
     
  11. iacula

    iacula Senior Member

    Location:
    Southampton
    Yes 25c's on an "entry level" Trek 1.2, can't blame the tyres this time though it seems, Shwalbe Marathons on order nevertheless!
     
  12. twowheelsgood

    twowheelsgood Senior Member

    Location:
    Zurich Switzerland
    I swapped mine for GP4000s which for a genuine racing tyre is pretty tough, more so than a pro race (which isn't as bad as you might think).

    The selects went back on my commuter recently as they were all I had left, which reminds me, I must get some new Panaracer Paselas this weekend. I really don't like those heavy "puncture proof" some ride here 500-600g is just too heavy.
     
  13. HJ

    HJ Cycling in Scotland

    Location:
    Auld Reekie
    25mph isn't that hard to do, even I can do that, on the flat, on a hybrid, and I am no hard core club racer... can't keep to that speed for very long though.
     
  14. Keith Oates

    Keith Oates Janner

    Location:
    Penarth, Wales
    The last time I was in the UK I hit a large stone when travelling down a hill at a farily high speed, not only two punctures but two new wheels were also required!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
     
  15. mootaineer

    mootaineer New Member

    Location:
    London
    What do you think of the Paselas? Are they any good?
    I've thought about running them (when I get frustrated by punctures).
    Recently I have started commuting (yes...:becool:) on GP4000s because the grip I get from it hasn't been matched by any other tyre so far.
    Puncture resistance seems quite good too. Rolling resistance is the best so far.

    I've tried Michelin Krylions, Pro2 Race, Bontrager Hardcase, etc.
    The Krylions seem to be reasonably puncture proof but I find they don't grip too well. Pro2 Race I don't like at all, despite their claims for low rolling resistance (which I've never experienced). I found them very skittish too. The Hardcases were ok...but again not sure about the grip.