[Yak] tire pressure as a function of tire width and weight
dmsantam at gmail.com
Tue Apr 5 15:58:06 PDT 2011
i've done about 15,000kms on marathon XRs and marathon pluses. had two flats
in that entire time.
got some scorchers, had 3 flats in 300kms.
scorchers are a great ride though. for me, i'll keep using the scorchers on
the nwt because they ride so nice. i don't mind fixing flats so much. on the
wifes bike, i'll keep marathons on there. because if she gets a flat, i'll
get a phone call to come fix it! so far with her marathon pluses, she has
not had a flat.
On Wed, Apr 6, 2011 at 8:30 AM, Bryan S <basignorelli at gmail.com> wrote:
> 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.
> 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
>> 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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