[Yak] tire pressure as a function of tire width and weight

[Bryan S]

Last fall I put a new pair of Schwalbe Supremes (26x1.6) on my LHT and on
the second ride I got a flat on these "supposedly flat proof" tires (tongue
in cheek).  It was a bummer but I believe it was completely due to the pile
of crap gravel that I got squeezed into riding through when crossing a
bridge in a turn at rush hour.  Oh well... not the tires fault.

I too run my tires around 60 psi.

Bryan

On Tue, Apr 5, 2011 at 10:47 AM, Vik Banerjee <threeohm at gmail.com> wrote:

> Most people don't get enough flats to draw a whole lot of conclusions from
> them. My GF got two flats in one week of commuting and was ready to buy
> Marathon Plus tires as she felt clearly the supple/fast tires I put on her
> bike had a problem. I told her to just keep riding the same tires. Several
> months later she hasn't had a flat since the two in a row.  She isn't a
> powerful rider so she can ill afford to ride slow tires like M+s.
>
> Unless you are getting dozens of flats on each tire at each pressure
> setting you don't have the data to correlate between pressure/width and risk
> of getting flats.
>
> The real danger in the situation above is that if she had put slow harsh
> riding M+s ion her bike she would not have had any flats since and would
> have conformed her fears that she need horrible tires to get to work and
> back hassle free - when in fact the flats she got were just random events
> not related to her tires.
>
> I know my wide low pressure tires are less likely in theory to get a flat
> than a narrower/high pressure tire, but that doesn't mean I won't get two in
> a row next week and if I subsequently switch to M+s that doesn't mean the
> M+s at 300psi is the reason I don't get a flat for 1 year.
>
> safe riding,
>
> Vik Banerjee
> threeohm at gmail.com
> www.thelazyrando.com
>
> On 2011-04-05, at 8:35 AM, Jym Dyer wrote:
>
> > =v= I've read all of these postings with interest, and I
> > understand the theory, etc.  But what I find when the rubber
> > hits the road is:
> >
> >  o If I don't pump the tires (or tyres, if you will) up to
> >    100psi, I get flats.
> >
> >  o If I use Schwalbe Marathon Plus, at 100psi, I get very
> >    few flats (the rubber cement in my patch kit dries up!).
> >
> >  o I used to use Schwalbe Stelvios, at 100psi, which did
> >    seem zippier but occasionally got flats.
> >
> >  o If I use Primo Comets, I get flats no matter what.
> >
> > I don't weigh a whole lot (175lbs is normal for my height),
> > but these are my experiences.  Thinner and high PSI works.
> > What's up with that?
> >
> > =v= I've always wanted to try out Scorchers (because, hey,
> > http://scorcher.org/  is me), but never had the opportunity.
> >    <_Jym_>
> > ____________
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