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700 x 28c Road Tubulars

Old 01-09-19, 05:06 PM
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davei1980
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700 x 28c Road Tubulars

Anyone know of road bike tubulars which are 700x28c (or 28"x28mm or 28x622?). An internet search revealed the widest size available is 25 but wanted to double check.

Asking for a friend....
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Old 01-09-19, 05:34 PM
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some people have used diamond/file tread tires for hard dry ground cyclocross racing as a source of wider road sew-ups..
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Old 01-09-19, 05:46 PM
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I have some 'cross tubies that are 28s and 32s. They may as well be road tires, as they are lightly built, and feature no lugs or tread. I assume they were built for fast, dry 'cross courses.

But first, ask yourself why you need 28mm tubulars for pavement. Tubulars ride roughly one size larger than comparable clinchers. Why? Look at the cross section of a clincher rim. See that air space between the rim walls?.. it is useless dead air in terms of performing the function of a pneumatic tire, which is cushioning the ride, and protecting the rim from impacts.

in tubulars, almost 100% of th tire volume is useable.

Second issue is that clincher rims require ground-facing 'protrusions' or hooks to hold on the clincher tire bead. These are heavy, fragile, and cause pinch flats. If the clincher tire hits something large enough to cause it to flatten out against the rim, a pinch flat occurs. Since tubular rims don't require these hooks, you have far greater resistance to pinch flats, and you can run tubulars at considerably lower pressures.

These two factors (weight advantage and pinch flat resistance) are why tubular rims are still used exclusively at the elite-level, and will be until the end of time.
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Old 01-09-19, 05:47 PM
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https://www.wiggle.com/vittoria-cors...graphene-tyre/
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Old 01-09-19, 05:48 PM
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Vittoria corsa g+ Tubulars are available in 700x27 excellent tires. Pro Bike Kit has the best prices.
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Old 01-09-19, 05:53 PM
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Originally Posted by Dave Mayer View Post
I have some 'cross tubies that are 28s and 32s. They may as well be road tires, as they are lightly built, and feature no lugs or tread. I assume they were built for fast, dry 'cross courses.

But first, ask yourself why you need 28mm tubulars for pavement. Tubulars ride roughly one size larger than comparable clinchers. Why? Look at the cross section of a clincher rim. See that air space between the rim walls?.. it is useless dead air in terms of performing the function of a pneumatic tire, which is cushioning the ride, and protecting the rim from impacts.

in tubulars, almost 100% of th tire volume is useable.

Second issue is that clincher rims require ground-facing 'protrusions' or hooks to hold on the clincher tire bead. These are heavy, fragile, and cause pinch flats. If the clincher tire hits something large enough to cause it to flatten out against the rim, a pinch flat occurs. Since tubular rims don't require these hooks, you have far greater resistance to pinch flats, and you can run tubulars at considerably lower pressures.

These two factors (weight advantage and pinch flat resistance) are why tubular rims are still used exclusively at the elite-level, and will be until the end of time.
10,000% great info here. I know a lot of the advantages of sew ups but didn't consider a few of the points you brought up.

So what do you think the odds are than a 25mm sew up (110-120 TPI casing maybe? Seems average for a tubular) rides better than my current 28mm (60 TPI) clincher? Assuming I am running close to the minimum safe air pressure in both? Just curious if I could go down one size and improve ride quality....
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Old 01-09-19, 05:56 PM
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Originally Posted by Wileyone View Post
Vittoria corsa g+ Tubulars are available in 700x27 excellent tires. Pro Bike Kit has the best prices.
You're the man
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Old 01-09-19, 05:56 PM
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Thanks!

Wow they don't give them away do they!! Lol
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Old 01-09-19, 06:01 PM
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Originally Posted by davei1980 View Post
10,000% great info here. I know a lot of the advantages of sew ups but didn't consider a few of the points you brought up.

So what do you think the odds are than a 25mm sew up (110-120 TPI casing maybe? Seems average for a tubular) rides better than my current 28mm (60 TPI) clincher? Assuming I am running close to the minimum safe air pressure in both? Just curious if I could go down one size and improve ride quality....
Well, I can attest that Vittoria Corsas and Paris-Roubaix tires offer a superb ride, definitely better than similar 24 mm tires from Vittoria. I just wish I could justify the cost of silks . . .
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Old 01-09-19, 06:12 PM
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I had an aluminum Cervelo that was so super stiff. A great crit bike but pretty much unrideable over 2 hours, especially on NorCal farm road pave'. But 25mm Vittoria tubulars made a huge difference. If I could have fit 27 or 28mm's on that bike, I would have.
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Old 01-10-19, 12:32 AM
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https://www.probikekit.com/bicycle-t.../11531051.html

The Pave ones could be had for $35 until recently.

I have some Schwalbe 30mm but haven't seen them for sale lately.++++++++++++++++++++++++++++++++++

(cat was sitting on the keyboard)
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Old 01-10-19, 04:19 AM
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Challenge Paris Roubaix
Veloflex Vlaanderen
Schwalbe One

Challenge are more like 27 but they also have a 30, forget the name.
Schwalbe has 28 & 30
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Old 01-10-19, 08:05 AM
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BITD, I'd say the Clément "Campionato del Mondo" would be the tire, but they're no longer made.

Dugast still offers a 27mm road tubular:

https://www.a-dugast.com/shop-en-r
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Old 01-10-19, 11:09 AM
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The Clément "Campionato del Mondo" Seta, a silk casing, was the good stuff , for those who did not have to ask how much they cost ..
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Old 01-10-19, 04:24 PM
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Originally Posted by fietsbob View Post
for those who did not have to ask how much they cost ..
It's enough to make you cry. From a 1984 dealer catalog:

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Old 01-10-19, 04:37 PM
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cost of living made too big a budget hole , then.. for me..
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Old 01-12-19, 05:30 AM
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Originally Posted by davei1980 View Post
Thanks!

Wow they don't give them away do they!! Lol
https://www.merlincycles.com/en-us/veloflex-vlaanderen-tubular-tyre-102404.html
Best I can find quickly. Unless price is no object, spend some time shopping. Merlin has free shipping.

Post season CX tires are often low priced if you have a bike that fits them.
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