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Re: RS tire pressures (and suspension settings)



For tire pressures I use the 10% method. One should see a difference 
of 10% between cold and heated up ie a front cold at 36 should be 
39.6 or so when ridden for say 40 minutes..

Erik


>For the last couple of weeks, I've been trying out different
>suspension settings and tire pressures on my RS, which was
>recently fitted with Michelin Pilot Sports several hundred
>miles ago.
>
>I've settled on settings around-
>
>Front preload - 9mm (standard=10mm firm=8mm)
>
>Rear rebound - 1.75 turns out (firm)
>
>Rear preload - 10 turns out (standard=12 turns firm=8 turns)
>
>I arrived at these settings using lots of trial and error and
>standard tire pressures of 36 front/42 rear cold.
>
>I've also tried different tire pressures, and found that I greatly
>prefer running lower than recommended pressures in the tires.
>
>Today I'm running cold pressures of 32 front/38 rear.
>
>(At the moment, it's 65 degrees Fahrenheit and they're 33/39.
>  In the morning, when it's cooler, they're 31/37.  So I'm averaging.
>  BTW, when they talk about cold pressure, how cold is cold?
>  When the bike is sitting unused, the difference in pressure between
>   early morning and warm afternoon can be as much as 4/5 pounds!)
>
>The bike feels a *lot* better than it ever did at the recommended
>settings of 36/42.  At 36/42 with the Pilots, the tires feel "bouncy";
>especially the front tire, and the lose their great "on rails" feel.
>
>I suspect that the root of the problem may be insufficient front damping,
>and yes, Lindemann or Racetech will probably get a crack at the bike
>next year.
>
>But for now, I'm wondering if any of you can tell me a good reason why
>I shouldn't run lower pressure in the tires?
>
>Unless there's some killer reason why not, I'm running them pretty close
>to 32/38, not 36/42.
>
>The bike feels a lot smoother and more planted that way.
>
>Michelin used to publish their own recommended pressures in their paper
>fitment guide.  Maybe they still do.  Does anyone have access to the paper
>fitment guide?
>
>On the web fitment guide, they just "cop out" and tell you to use the
>manufacturer's recommended pressures.
>
>BTW, for anyone who hasn't bothered to play with the suspension settings yet,
>check them out!  They make a lot of difference.
>
>-Don
>
>
>
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