23c or 25c tires

I'm looking for some help with tire choice. I ride about 3000 miles per
year and participate in an annual 8 day charity ride for the Arthritis
Foundation. My road bike came with 700x23 tires. Since I weight in at
about 195lbs, I was wondering if going to 700x25 tires would be a good
choice. I don't do any racing, just training rides for the annual charity
ride.

Any advice about tire width is appreciated.

"kpros" schreef in bericht
...
I'm looking for some help with tire choice. I ride about 3000 miles per
year and participate in an annual 8 day charity ride for the Arthritis
Foundation. My road bike came with 700x23 tires. Since I weight in at
about 195lbs, I was wondering if going to 700x25 tires would be a good
choice. I don't do any racing, just training rides for the annual charity
ride.

Any advice about tire width is appreciated.



25 mm tyres have only advantages. The most important for me is comfort. I
like my 25 mm Michelin Pro race tyres very much.

Lou

"kpros" wrote in message
...
I'm looking for some help with tire choice. I ride about 3000 miles per
year and participate in an annual 8 day charity ride for the Arthritis
Foundation. My road bike came with 700x23 tires. Since I weight in at
about 195lbs, I was wondering if going to 700x25 tires would be a good
choice. I don't do any racing, just training rides for the annual charity
ride.

There's a chart online in this regard somewhere, but the reduction in
rolling resistance by going from a 25 to a 23 is negligible. For your
riding, the bit of extra comfort you'll be getting with the slightly wider
tires is well worth it. Go with the 25s.

Jim

Kpros wrote:
I'm looking for some help with tire choice. I ride about 3000 miles per
year and participate in an annual 8 day charity ride for the Arthritis
Foundation. My road bike came with 700x23 tires. Since I weight in at
about 195lbs, I was wondering if going to 700x25 tires would be a good
choice. I don't do any racing, just training rides for the annual
charity ride.
Any advice about tire width is appreciated.


Go for the 25s. They will last a little longer, be a little mor
comfortable, but weigh a little more. When I say "a little" I am talkin
in the range of 10%. Make sure they will clear your fork, brakes, etc
While you are at it, consider Avocet FasGrip Carbon 12 Duro 28s. The
cost the same; the "little" becomes more significant. They clearanc
issues are also more significant. Specifications
http://www.avocet.com/tirepages/carbon12_specs.htm


-

"Jim Flom" wrote:

There's a chart online in this regard somewhere, but the
reduction in rolling resistance by going from a 25 to a 23 is
negligible.

Given identical construction and pressure, that should be an
INCREASE in rolling resistance. See
http://www.schwalbe.com/index.pl?punkt=265 under "Why do wide
tires roll better than narrow ones?".

For your riding, the bit of extra comfort you'll be getting
with the slightly wider tires is well worth it. Go with the
25s.

Especially if they roll better.

John

kpros wrote:
I'm looking for some help with tire choice. I ride about 3000 miles per
year and participate in an annual 8 day charity ride for the Arthritis
Foundation. My road bike came with 700x23 tires. Since I weight in at
about 195lbs, I was wondering if going to 700x25 tires would be a good
choice. I don't do any racing, just training rides for the annual charity
ride.

That would certainly be an improvement. If your bike has reasonable
tire clearance, I'd suggest going wider, say 28 mm for spending that
much time in the saddle.

I'd particularly recommend the Panaracer Rolly Poly or Avocet FasGrip
Duro, see: http://sheldonbrown.com/harris/tires/622.html

Sheldon "Comfort And Durability" Brown
+--------------------------------------------------------------+
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Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com

Jim Flom wrote:

There's a chart online in this regard somewhere, but the reduction in
rolling resistance by going from a 25 to a 23 is negligible.

Here are a couple of charts:

http://www.terrymorse.com/bike/rolres.html

or:

http://bike.terrymorse.com/rolres.html

--
terry morse Palo Alto, CA http://bike.terrymorse.com/

Sheldon Brown wrote:
I'd particularly recommend the Panaracer Rolly Poly or Avocet FasGrip
Duro, see: http://sheldonbrown.com/harris/tires/622.html

i have to ask this .. of anyone in particuliar.

i've been getting a much higher number of flats with avocet fasgrip 25/28mm
(wired kevlar version) than with the vittoria rubino pro 23mm on my
commuter. both sets new, same terrain (idaho, goathead thorn country to
be sure but not currently) but with less miles going to the avocets.

on the vittorias my last flat was early december. on the avocets i had 2
this past weekend alone. both exterior from road debris. for a given ride
(30 to 60 miles) it seems to be a 50/50 shot whether i get a flat.

it's driving me nuts. the avocets were fine in minnesota. i like 'em.
but i'm about to switch out to the rubino pros on that bike as well.
anyone out here in goathead thorn country have any different experiences
with avocets? they also seem to slice (knick?) like the vittoria open
corsas.
--
david reuteler

Terry Morse wrote:
Jim Flom wrote:

There's a chart online in this regard somewhere, but the reduction in
rolling resistance by going from a 25 to a 23 is negligible.

Here are a couple of charts:

http://www.terrymorse.com/bike/rolres.html

or:

http://bike.terrymorse.com/rolres.html

my understanding of the hoopla of narrow tires is that it is centered
around aerodynamics not rolling resistance. you want them to be as
narrow as the rims they are mounted on.

i don't think anyone has every disputed that rolling resistance of narrower
tires is higher.
--
david reuteler

David Reuteler wrote:

i've been getting a much higher number of flats with avocet fasgrip 25/28mm
(wired kevlar version) than with the vittoria rubino pro 23mm on my
commuter. both sets new, same terrain (idaho, goathead thorn country to
be sure but not currently) but with less miles going to the avocets.

on the vittorias my last flat was early december. on the avocets i had 2
this past weekend alone. both exterior from road debris. for a given ride
(30 to 60 miles) it seems to be a 50/50 shot whether i get a flat.

it's driving me nuts. the avocets were fine in minnesota. i like 'em.
but i'm about to switch out to the rubino pros on that bike as well.
anyone out here in goathead thorn country have any different experiences
with avocets? they also seem to slice (knick?) like the vittoria open
corsas.

I doubt this has anything to do with the type of tires, but I would
expect that for punctures by sharp objects, wider tires would be at
slightly greater risk due to the larger swept area.

Generally, the reduced risk of "snake bite" pinch flats with wider tires
more than compensates for this.

Goat heads are not something we have in New England, and I'm not
familiar with their life cycle, but if they're like other plant seeds,
their distribution will vary according to the time of year.

Sheldon "No Goats" Brown
+-----------------------------------------------------+
| We can complain because rose bushes have thorns, |
| or rejoice because thorn bushes have roses. |
| --Abraham Lincoln |
+-----------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com