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13-04.-2004, 01:31 AM
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Re: Wet weather tire pressure
"DRS" <drs@removethis.ihug.com.au> wrote in message news:c5e8ll$q0a$1@lust.ihug.co.nz... > Harris <aharris@bookworm.suffolk.lib.ny.us> wrote in message > 2rxec.147$Ho2.4167@dfw-read.news.verio.net > > DRS <drs@removethis.ihug.com.au> wrote: > >> Curtis <curtisr@kingston.net> wrote in message > >> e7b5232.0404120449.79fc0f31@posting.google.com > >>> O.K., I hate to be so stupid but is there any evidence to suggest > >>> that a lower tire pressure will help traction in the rain? > > > >> No. > > > > I say yes as it puts more rubber in contact with the road (larger > > contact patch). > > 1. It allows the tyre to squirm more, thus reducing its handling. > 2. To the extent that it applies to bicycle tyres, lower pressure allows > the tread to deform which in turn reduces its effectiveness at displacing > water. That's why motorcycle racers always run wet weather tyres at full > pressure. > Didn't one of the bike tyre manufacturers do a test, and they found that insufficient water displacement would only occur if you cycled 200mph. Having a larger contact patch through a little underinflation is hardly likely to bring that figure anywhere near an obtainable value. -- Mike W |
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