700x25 for 700x23 clinchers?

They will work fine and might even be noticeable more comfortable then
the 23s without noticing much performance difference.

In article <[email protected]>,
[email protected] says...
>
>
>Dumb question (but I'm an engineer and learned
>in school that there are no dumb questions).
>
>I have 700x23's on my road bike now, and saw
>the same brand on sale at Performance, but
>700x25. Any overwhelming reason why I can't
>use these? I know my frame will take the extra
>2mm. I ride for fun and excercise so I don't care
>about the extra rolling resistance the 2mm may
>give.
>
>--
>- Zilla
> Cary, NC USA
> (Remove XSPAM)
>
>
>

On Tue, 18 Jul 2006 20:43:16 -0400, "Zilla"
<[email protected]> wrote:

>Dumb question (but I'm an engineer and learned
>in school that there are no dumb questions).
>
>I have 700x23's on my road bike now, and saw
>the same brand on sale at Performance, but
>700x25. Any overwhelming reason why I can't
>use these? I know my frame will take the extra
>2mm. I ride for fun and excercise so I don't care
>about the extra rolling resistance the 2mm may
>give.

Dear Zilla,

It's unlikely that you could even tell the difference in wind drag,
rolling resistance, or rotating mass just by riding them. Even with a
stop watch, you'd need a lot of runs on calm mornings on the same
course.

Technically, there is indeed a slight performance loss, but it may
well be outweighed by the ability to lower the tire pressure slightly
and stil have a comfortable ride.

In practical terms, the real slowdown would be due to the slightly
increased number of flat tires.

In the long run, a slightly wider tire will run over slightly more
glass, thorns, wires, flints, and so forth. The only time that I wish
that I was running skinnier tires is when I see a goathead whirling
around on the sidewall of my 7000x26 tires.

Cheers,

Carl Fogel

Zilla wrote:
> Dumb question (but I'm an engineer and learned
> in school that there are no dumb questions).
>
> I have 700x23's on my road bike now, and saw
> the same brand on sale at Performance, but
> 700x25.

If you want a spare cheapie in case of catastrophic failure or even to
ride every day, they've got their house brand Prima 2s on sale for $10.
I like them better than any of the lower end training tire by pretty
much any name brand. Cut resistant enough, and very low puncture rate.
Decent thread count and pretty light with the prestige of being made by
Cheng Shin*. ;-)

I just picked up five of their 23mm plain Prima skinwalls for $4/each.

* I've had real **** made by the same maker, so I guess they're capable
of making tires at all price points. AFAIK they make the slightly
tonier (marketing wise) Maxxis brand.

Apparently, for the same pressure the lowest rolling resistance is in
28c. However the really really hard spleen-emulsifying tyres are all
pretty narrow.

Zilla wrote:
> I have 700x23's on my road bike now, and saw
> the same brand on sale at Performance, but
> 700x25. Any overwhelming reason why I can't
> use these? I know my frame will take the extra
> 2mm. I ride for fun and excercise so I don't care
> about the extra rolling resistance the 2mm may
> give.

No, go for it!
The rolling resistance is related in 1st order to pressure, but not
directly to width - broader tyres can perform better than narrower ones
on some harsh pavement, eg.
There will be a very slight difference, as you will have to lower
pressure a bit to have the same stress in the rim (eg the stress in the
rim with a 23mm@8bars tyre is roughly the same as with a [email protected] bars,
nothing to be afraid of).
The difference in terms of rotating mass has also a negative influence,
but would also be barely noticeable.

For fun and exercise, the main thing is the bit of extra comfort
they'll bring, not so bad isn't it?

On 18 Jul 2006 21:13:59 -0700, "landotter" <[email protected]>
wrote:

>* I've had real **** made by the same maker, so I guess they're capable
>of making tires at all price points. AFAIK they make the slightly
>tonier (marketing wise) Maxxis brand.

I've only good things to say about the Maxxis Detonator (700x23/25).

jbr

Zilla wrote:
> I have 700x23's on my road bike now, and saw
> the same brand on sale at Performance, but
> 700x25. Any overwhelming reason why I can't
> use these? I know my frame will take the extra
> 2mm. I ride for fun and excercise so I don't care
> about the extra rolling resistance the 2mm may
> give.

The real question is why you would want 700x23 tires for your style of
riding. The 25's at about ~100 psi will be more comfortable, more
stable over rough roads, and will provide better traction. And trust
me, you won't notice any difference in performance. They'll probably be
easier to mount as well. Go for it.

Art Harris

Zilla wrote:
> Dumb question (but I'm an engineer and learned
> in school that there are no dumb questions).
>
> I have 700x23's on my road bike now, and saw
> the same brand on sale at Performance, but
> 700x25. Any overwhelming reason why I can't
> use these? I know my frame will take the extra
> 2mm. I ride for fun and excercise so I don't care
> about the extra rolling resistance the 2mm may
> give.
>
> --
> - Zilla
> Cary, NC USA
> (Remove XSPAM)

No reason, use them..

On 18 Jul 2006 21:13:59 -0700, "landotter" <[email protected]> wrote:

>
>Zilla wrote:
>> Dumb question (but I'm an engineer and learned
>> in school that there are no dumb questions).
>>
>> I have 700x23's on my road bike now, and saw
>> the same brand on sale at Performance, but
>> 700x25.
>
>If you want a spare cheapie in case of catastrophic failure or even to
>ride every day, they've got their house brand Prima 2s on sale for $10.
>I like them better than any of the lower end training tire by pretty
>much any name brand. Cut resistant enough, and very low puncture rate.
>Decent thread count and pretty light with the prestige of being made by
>Cheng Shin*. ;-)
>
>I just picked up five of their 23mm plain Prima skinwalls for $4/each.
>
>* I've had real **** made by the same maker, so I guess they're capable
>of making tires at all price points. AFAIK they make the slightly
>tonier (marketing wise) Maxxis brand.

Yep, Maxxis is the brand for their other aftermarket products. Cheng Shin is
mostly an OEM and the biggest on Earth, they can make a tire at any pricepoint /
quality level specified. If a buyer specifies a quality tire, CS will deliver.
If the client spec's the cheapest black thing that'll keep a rim from denting on
the way out the showroom, they'll ship that too.

Ron

"Art Harris" <[email protected]> wrote in message
news:[email protected]...
> Zilla wrote:
> > I have 700x23's on my road bike now, and saw
> > the same brand on sale at Performance, but
> > 700x25. Any overwhelming reason why I can't
> > use these? I know my frame will take the extra
> > 2mm. I ride for fun and excercise so I don't care
> > about the extra rolling resistance the 2mm may
> > give.
>
> The real question is why you would want 700x23 tires for your style of
> riding. The 25's at about ~100 psi will be more comfortable, more
> stable over rough roads, and will provide better traction. And trust
> me, you won't notice any difference in performance. They'll probably be
> easier to mount as well. Go for it.
>
> Art Harris
>

700x23s were on the bike when I bought it!

--
- Zilla
Cary, NC USA
(Remove XSPAM)

"RonSonic" <[email protected]> wrote in message
news:[email protected]...
> On 18 Jul 2006 21:13:59 -0700, "landotter" <[email protected]> wrote:
>
> >
> >Zilla wrote:
> >> Dumb question (but I'm an engineer and learned
> >> in school that there are no dumb questions).
> >>
> >> I have 700x23's on my road bike now, and saw
> >> the same brand on sale at Performance, but
> >> 700x25.
> >
> >If you want a spare cheapie in case of catastrophic failure or even to
> >ride every day, they've got their house brand Prima 2s on sale for $10.
> >I like them better than any of the lower end training tire by pretty
> >much any name brand. Cut resistant enough, and very low puncture rate.
> >Decent thread count and pretty light with the prestige of being made by
> >Cheng Shin*. ;-)
> >
> >I just picked up five of their 23mm plain Prima skinwalls for $4/each.
> >
> >* I've had real **** made by the same maker, so I guess they're capable
> >of making tires at all price points. AFAIK they make the slightly
> >tonier (marketing wise) Maxxis brand.
>
> Yep, Maxxis is the brand for their other aftermarket products. Cheng Shin
is
> mostly an OEM and the biggest on Earth, they can make a tire at any
pricepoint /
> quality level specified. If a buyer specifies a quality tire, CS will
deliver.
> If the client spec's the cheapest black thing that'll keep a rim from
denting on
> the way out the showroom, they'll ship that too.
>
> Ron

Who sells Cheng Shin tires? I Froogled and only got car/mower tires...

--
- Zilla
Cary, NC USA
(Remove XSPAM)

Since you are talking about the same tire but only a different size, you
will actually get a larger size. However, be aware that if you switch to a
different tire in the 25 size, you may actually be buying a 23, since
several of the makers overstate the actual size of their tires.


"RS" <[email protected]> wrote in message
news:[email protected]...
> They will work fine and might even be noticeable more comfortable then
> the 23s without noticing much performance difference.
>
> In article <[email protected]>,
> [email protected] says...
> >
> >
> >Dumb question (but I'm an engineer and learned
> >in school that there are no dumb questions).
> >
> >I have 700x23's on my road bike now, and saw
> >the same brand on sale at Performance, but
> >700x25. Any overwhelming reason why I can't
> >use these? I know my frame will take the extra
> >2mm. I ride for fun and excercise so I don't care
> >about the extra rolling resistance the 2mm may
> >give.
> >
> >--
> >- Zilla
> > Cary, NC USA
> > (Remove XSPAM)
> >
> >
> >
>

Zilla wrote:

> I have 700x23's on my road bike now, and saw
> the same brand on sale at Performance, but
> 700x25. Any overwhelming reason why I can't
> use these? I know my frame will take the extra
> 2mm. I ride for fun and excercise

No, you'll probably be happier on 25mm anyway. Just be sure to reduce
the pressure compared to what you were using with 23. As for whether
you will notice the difference in rolling resistance, depends on the
brand: in some tire models, a bigger size just gets you a bigger tire.
In others though, a bigger size may also get you thicker rubber and/or
heavier cords. Also, in some, there is a jump in rubber thickness/cord
weight between certain sizes, but not between others.

Just be aware that carbon-filled rubber will give you better wet
traction and durability than silica-filled rubber. The wet traction
difference can be really substantial. Choose on the basis of safety as
well as price. There are plenty of good inexpensive carbon-rubber tires
to choose from (IRC, Michelin Dynamic, Conti Ultra 2000 on sale ,
surely others).
à

On Wed, 19 Jul 2006 09:36:36 -0400, "Zilla" <[email protected]> wrote:

>"RonSonic" <[email protected]> wrote in message
>news:[email protected]...
>> On 18 Jul 2006 21:13:59 -0700, "landotter" <[email protected]> wrote:
>>
>> >
>> >Zilla wrote:
>> >> Dumb question (but I'm an engineer and learned
>> >> in school that there are no dumb questions).
>> >>
>> >> I have 700x23's on my road bike now, and saw
>> >> the same brand on sale at Performance, but
>> >> 700x25.
>> >
>> >If you want a spare cheapie in case of catastrophic failure or even to
>> >ride every day, they've got their house brand Prima 2s on sale for $10.
>> >I like them better than any of the lower end training tire by pretty
>> >much any name brand. Cut resistant enough, and very low puncture rate.
>> >Decent thread count and pretty light with the prestige of being made by
>> >Cheng Shin*. ;-)
>> >
>> >I just picked up five of their 23mm plain Prima skinwalls for $4/each.
>> >
>> >* I've had real **** made by the same maker, so I guess they're capable
>> >of making tires at all price points. AFAIK they make the slightly
>> >tonier (marketing wise) Maxxis brand.
>>
>> Yep, Maxxis is the brand for their other aftermarket products. Cheng Shin
>is
>> mostly an OEM and the biggest on Earth, they can make a tire at any
>pricepoint /
>> quality level specified. If a buyer specifies a quality tire, CS will
>deliver.
>> If the client spec's the cheapest black thing that'll keep a rim from
>denting on
>> the way out the showroom, they'll ship that too.
>>
>> Ron
>
>Who sells Cheng Shin tires? I Froogled and only got car/mower tires...

Everybody, but under their own names. Cheng Shen is an OEM, that is, their
products are branded with the name of the company that ordered them. Often
they'll say "Cheng Shin" on the tire itself but in small molded in print.

Maxxis is the brand name they put on their own aftermarket tires.

Ron

On Wed, 19 Jul 2006 09:36:36 -0400, "Zilla"
<[email protected]> wrote:

>"RonSonic" <[email protected]> wrote in message
>news:[email protected]...
>> On 18 Jul 2006 21:13:59 -0700, "landotter" <[email protected]> wrote:
>>
>> >
>> >Zilla wrote:
>> >> Dumb question (but I'm an engineer and learned
>> >> in school that there are no dumb questions).
>> >>
>> >> I have 700x23's on my road bike now, and saw
>> >> the same brand on sale at Performance, but
>> >> 700x25.
>> >
>> >If you want a spare cheapie in case of catastrophic failure or even to
>> >ride every day, they've got their house brand Prima 2s on sale for $10.
>> >I like them better than any of the lower end training tire by pretty
>> >much any name brand. Cut resistant enough, and very low puncture rate.
>> >Decent thread count and pretty light with the prestige of being made by
>> >Cheng Shin*. ;-)
>> >
>> >I just picked up five of their 23mm plain Prima skinwalls for $4/each.
>> >
>> >* I've had real **** made by the same maker, so I guess they're capable
>> >of making tires at all price points. AFAIK they make the slightly
>> >tonier (marketing wise) Maxxis brand.
>>
>> Yep, Maxxis is the brand for their other aftermarket products. Cheng Shin
>is
>> mostly an OEM and the biggest on Earth, they can make a tire at any
>pricepoint /
>> quality level specified. If a buyer specifies a quality tire, CS will
>deliver.
>> If the client spec's the cheapest black thing that'll keep a rim from
>denting on
>> the way out the showroom, they'll ship that too.
>>
>> Ron
>
>Who sells Cheng Shin tires? I Froogled and only got car/mower tires...

Dear Zilla,

Try Google instead of Froogle:

http://www.google.com/search?hl=en&lr=&as_qdr=all&q="cheng+shin"+tires+bicycles

That gives 123,000 hits. Not all of them are what you want, but many
of them are Cheng Shin tires at mailorder bike stores.

The typical low price may keep Froogle from seeing Cheng Shin bike
tires.

Cheers,

Carl Fogel

Zilla wrote:
> Dumb question (but I'm an engineer and learned
> in school that there are no dumb questions).
>
> I have 700x23's on my road bike now, and saw
> the same brand on sale at Performance, but
> 700x25. Any overwhelming reason why I can't
> use these? I know my frame will take the extra
> 2mm. I ride for fun and excercise so I don't care
> about the extra rolling resistance the 2mm may
> give.
>


I've read that there is not always conformity between the actual versus
stated tire size, anyway.

On Wed, 19 Jul 2006 12:29:40 -0500, catzz66 <[email protected]>
wrote:

>Zilla wrote:
>> Dumb question (but I'm an engineer and learned
>> in school that there are no dumb questions).
>>
>> I have 700x23's on my road bike now, and saw
>> the same brand on sale at Performance, but
>> 700x25. Any overwhelming reason why I can't
>> use these? I know my frame will take the extra
>> 2mm. I ride for fun and excercise so I don't care
>> about the extra rolling resistance the 2mm may
>> give.
>>
>
>
>I've read that there is not always conformity between the actual versus
>stated tire size, anyway.

That's what my wife keeps telling me.