Thanks for your reply. My gut feeling tells me the narrow
tire has a lower rolling resistance, but it might be a close
call. Only a real life test could prove it. Maybe I can make
a deal with my lbs for a short test.
James Thomson schreef:
> "gerrit van wijk" <
[email protected]> wrote:
>
>
>>The Conti sportcontact 32mm and the Conti travelcontact
>>47mm are both rated to a max pressure of 6 bar, 86 psi.
>
>
>>Does this mean that at max pressure the rolling resistance
>>is roughly the same?
>
>
> No, you can't conclude that.
>
> In theory, a broad tyre has a lower rolling resistance
> than a narrow one if both are of similar construction and
> inflated to the same pressure. The broad tyre will also
> feel harder than the narrow.
>
> In this case, the Travel Contact is of heavier
> construction that the Sport as well as being wider, so all
> bets are off. Okay, if I had to guess the better roller,
> I'd pick the Sport.
>
> James Thomson