• Till the dimples are gone?

    From Mark J cleary@mcleary08@comcast.net to rec.bicycles.tech on Fri Jul 4 12:47:43 2025
    From Newsgroup: rec.bicycles.tech

    I have been riding my rim brake Habby the past month really. Putting
    many miles with warm temps low wind. I notice the rear conti PG5000 was looking quite flat profile in the middle to tire. I ride it at about
    83-93 psi and it is a 25mm tire. Have had no flats with the tire but
    looking at the dimple marks on the tread they were barely visible had to really look good.

    i decided with the profile flat and wear markers gone to replace it. i wondered when most of you replace tire. I have heard a number of rider
    say they go till the chords start showing or they start getting a lot
    flats. To me one flat is too many so I changed it out.

    I don't if it is just me but on todays ride I though the bike road
    better. I assume that a rounded tire profile is better than the flat bit
    in the middle?

    I don't think I can get a 28 mm tire on the bike but not sure the 25 is
    fine. Maybe I should investigate closer.
    --
    Deacon Mark

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  • From Frank Krygowski@frkrygow@sbcglobal.net to rec.bicycles.tech on Fri Jul 4 23:02:34 2025
    From Newsgroup: rec.bicycles.tech

    On 7/4/2025 1:47 PM, Mark J cleary wrote:
    I have been riding my rim brake Habby the past month really. Putting
    many miles with warm temps low wind. I notice the rear conti PG5000 was looking quite flat profile in the middle to tire. I ride it at about
    83-93 psi and it is a 25mm tire. Have had no flats with the tire but
    looking at the dimple marks on the tread they were barely visible had to really look good.

    i decided with the profile flat and wear markers gone to replace it. i wondered when most of you replace tire. I have heard a number of rider
    say they go till the chords start showing or they start getting a lot
    flats. To me one flat is too many so I changed it out.

    I don't if it is just me but on todays ride I though the bike road
    better. I assume that a rounded tire profile is better than the flat bit
    in the middle?

    I don't think I can get a 28 mm tire on the bike but not sure the 25 is fine. Maybe I should investigate closer.

    I think I generally ride until the first casing threads are barely
    showing. I can't say I detect any difference in ride quality, but I'm
    far from being a connoisseur of such things.

    If I were leaving on a long trip, I'd replace a worn tire sooner than
    that, before starting out. In fact, most of my long tours were started
    on fresh tires.
    --
    - Frank Krygowski
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  • From =?UTF-8?B?Y3ljbGludG9t?=@cyclintom@yahoo.com to rec.bicycles.tech on Sat Jul 5 19:25:21 2025
    From Newsgroup: rec.bicycles.tech

    On Fri Jul 4 23:02:34 2025 Frank Krygowski wrote:
    On 7/4/2025 1:47 PM, Mark J cleary wrote:
    I have been riding my rim brake Habby the past month really. Putting
    many miles with warm temps low wind. I notice the rear conti PG5000 was looking quite flat profile in the middle to tire. I ride it at about
    83-93 psi and it is a 25mm tire. Have had no flats with the tire but looking at the dimple marks on the tread they were barely visible had to really look good.

    i decided with the profile flat and wear markers gone to replace it. i wondered when most of you replace tire. I have heard a number of rider
    say they go till the chords start showing or they start getting a lot flats. To me one flat is too many so I changed it out.

    I don't if it is just me but on todays ride I though the bike road
    better. I assume that a rounded tire profile is better than the flat bit
    in the middle?

    I don't think I can get a 28 mm tire on the bike but not sure the 25 is fine. Maybe I should investigate closer.

    I think I generally ride until the first casing threads are barely
    showing. I can't say I detect any difference in ride quality, but I'm
    far from being a connoisseur of such things.

    If I were leaving on a long trip, I'd replace a worn tire sooner than
    that, before starting out. In fact, most of my long tours were started
    on fresh tires.
    I forget touring bike tires but racing/sports tires should really be replaced when the wear markers are comlpetely gone. Beyond this traction is impaired.
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  • From Roger Merriman@roger@sarlet.com to rec.bicycles.tech on Sun Jul 6 12:00:13 2025
    From Newsgroup: rec.bicycles.tech

    cyclintom <cyclintom@yahoo.com> wrote:
    On Fri Jul 4 23:02:34 2025 Frank Krygowski wrote:
    On 7/4/2025 1:47 PM, Mark J cleary wrote:
    I have been riding my rim brake Habby the past month really. Putting
    many miles with warm temps low wind. I notice the rear conti PG5000 was >>> looking quite flat profile in the middle to tire. I ride it at about
    83-93 psi and it is a 25mm tire. Have had no flats with the tire but
    looking at the dimple marks on the tread they were barely visible had to >>> really look good.

    i decided with the profile flat and wear markers gone to replace it. i
    wondered when most of you replace tire. I have heard a number of rider
    say they go till the chords start showing or they start getting a lot
    flats. To me one flat is too many so I changed it out.

    I don't if it is just me but on todays ride I though the bike road
    better. I assume that a rounded tire profile is better than the flat bit >>> in the middle?

    I don't think I can get a 28 mm tire on the bike but not sure the 25 is >>> fine. Maybe I should investigate closer.

    I think I generally ride until the first casing threads are barely
    showing. I can't say I detect any difference in ride quality, but I'm
    far from being a connoisseur of such things.

    If I were leaving on a long trip, I'd replace a worn tire sooner than
    that, before starting out. In fact, most of my long tours were started
    on fresh tires.




    I forget touring bike tires but racing/sports tires should really be
    replaced when the wear markers are comlpetely gone. Beyond this traction is impaired.


    Very much doubt traction is impaired, can feel the edge once a tyre has a
    flat top, but considering how hard road tyres compounds are, soft summer
    tyres are hard compound gravel tyres for example, and MTB particularly trail/enduro/DH are another level all together.

    Running a tyre down to the carcass is unwise for failure type of risks, but
    in my experience get punctures before that, and a generally slashed up
    surface.

    Roger Merriman
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