| Re: Tire size for least rolling resistance?
On Mon, 05 Apr 2004 20:07:21 GMT, "Tom Kunich" <cyclintom@yahoo.com>
wrote:
>It's strongly dependent on pressure. A 25 mm tire at 100 psi can have a lot
>lower rolling resistance than a 20 mm tire at the same pressure but the 20
>beats the 25 at 150 psi.
Huh? Why, at 150 psi, would a 20 beat a 25? If they're both the same
150 psi...the 25 ought to be better. Right?
If you're saying that the 25 is likely to be limited to 100psi and
the 20 is good for 150 psi, and that the result is less RR from the
20, then that's probably right.
Narrower tires are more aero, too...though the 5mm is probably too
tiny an aero penalty to worry about for general riding.
--
Rick Onanian
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