Today's Forum Topics
Set as homepage
|
View
New Forum Topics Today's Forum Topics Set as homepage |
 |
|
|||||||
| |
||||
Welcome to CyclingForums.com You are currently viewing our website as a guest which gives you limited access to view most discussions. You will have to register before you can post to this thread. By joining our free online community you will have access to post new topics, communicate privately with other cyclingforums.com members (PM), respond to polls, upload photos and access other special features like product reviews and classifieds. |
|
|
Thread Tools | Search this Thread | Display Modes |
06-04.-2004, 04:49 AM
|
#1 |
|
Guest
Posts: n/a
|
Tire size for least rolling resistance?
Hello,
I've seen it mentioned that sometimes a wider tire can have less rolling resistance than the skinny tires that racers use so I was wondering what tire size would offer the least rolling resistance? Thanks. |
|
|
06-04.-2004, 05:07 AM
|
#2 |
|
Guest
Posts: n/a
|
Re: Tire size for least rolling resistance?
"Chris Hansen" <chrishansen2003@yahoo.com> wrote in message
news:6902ac92.0404051149.2074b076@posting.google.com... > > I've seen it mentioned that sometimes a wider tire can have less > rolling resistance than the skinny tires that racers use so I was > wondering what tire size would offer the least rolling resistance? 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. That's why 23's and 25's are now the most popular sizes. For the sorts of pressures that people normally run they are the best compromise. |
|
|
|
06-04.-2004, 06:12 AM
|
#3 |
|
Guest
Posts: n/a
|
Re: Tire size for least rolling resistance?
Take a look at this: http://www.schwalbe.com/index.pl?mo...&produktgruppe= "Tom Kunich" <cyclintom@yahoo.com> wrote in message news:Z%icc.16054$Dv2.3421@newsread2.news.pas.earthlink.net... > "Chris Hansen" <chrishansen2003@yahoo.com> wrote in message > news:6902ac92.0404051149.2074b076@posting.google.com... > > > > I've seen it mentioned that sometimes a wider tire can have less > > rolling resistance than the skinny tires that racers use so I was > > wondering what tire size would offer the least rolling resistance? > > 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. > > That's why 23's and 25's are now the most popular sizes. For the sorts of > pressures that people normally run they are the best compromise. > > |
|
|
|
06-04.-2004, 06:30 AM
|
#4 |
|
Guest
Posts: n/a
|
Re: Tire size for least rolling resistance?
On 5 Apr 2004 12:49:52 -0700, chrishansen2003@yahoo.com (Chris Hansen)
wrote in message <6902ac92.0404051149.2074b076@posting.google.com>: >what tire size would offer the least rolling resistance? 36" as fitted to the Coker, I should imagine. -- Guy === May contain traces of irony. Contents liable to settle after posting. http://www.chapmancentral.co.uk 88% of helmet statistics are made up, 65% of them at Washington University |
|
|
|
06-04.-2004, 10:23 AM
|
#5 |
|
Guest
Posts: n/a
|
Re: Tire size for least rolling resistance?
"Raymo853" <rcc105@hotmail.com> wrote in message news:c4si3e$1hvu$1@f04n12.cac.psu.edu... > > Take a look at this: > http://www.schwalbe.com/index.pl?mo...&produktgruppe= > > I came across this site before and I suspect that Schwalbe recommend running wider tyres because their tubulars aren't rated at the high pressures of some of the other brands. Marty > > "Tom Kunich" <cyclintom@yahoo.com> wrote in message > news:Z%icc.16054$Dv2.3421@newsread2.news.pas.earthlink.net... > > "Chris Hansen" <chrishansen2003@yahoo.com> wrote in message > > news:6902ac92.0404051149.2074b076@posting.google.com... > > > > > > I've seen it mentioned that sometimes a wider tire can have less > > > rolling resistance than the skinny tires that racers use so I was > > > wondering what tire size would offer the least rolling resistance? > > > > 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. > > > > That's why 23's and 25's are now the most popular sizes. For the sorts of > > pressures that people normally run they are the best compromise. > > > > > > |
|
|
|
09-04.-2004, 10:32 AM
|
#6 |
|
Guest
Posts: n/a
|
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 |
|
|
|
10-04.-2004, 10:03 AM
|
#7 |
|
Guest
Posts: n/a
|
Re: Tire size for least rolling resistance?
Raymo853 wrote:
> Take a look at this: > http://www.schwalbe.com/index.pl?mo...&produktgruppe= > OTOH, take a look at this: http://www.terrymorse.com/bike/rolres.html Seems to me the general trend is that narrower tires do slightly better. But: I don't know what the road surface looked like for those tests. ISTR that the smoother the road, the better narrow tires do, but that for rougher roads, wider tires offer less rolling resistance. And incidentally, by "rougher" I don't necessarily mean potholes. If I remember right, just a rough texture is enough to harm the rolling resistance of narrower tires. This is probably a good question for rec.bicycles.tech -- -------------+ Frank Krygowski [To reply, omit what's between "at" and "cc"] |
|
|
Linear Mode
