Veloflex enters the tubeless market

[TobinHatesYou]

There you have it - a classic sidewall cut which is nothing unusual with very thin/supple cotton/silk casing tires when riding somewhere they're not supposed to go (like sharp shardy gravel). I do also assume that the stress on a single point is also more prounced when riding tubeless (as there is no tube to spread the load over the sidewall), which means that failure is accelerated when a point of damage occurs.

That doesn’t explain the constant radius circumferential abrasion/wear along the sidewalls. That kind of damage is from sidewall collapse/folding.

[Maddie]

That tire looks fairly beaten up. I ride both Corsa Evo TLR and Race TLR in rain, sometimes gravel. Always 6.0 bar front and 6.5 rear (67 kg) and never had a flat. I'm actually surprised how durable they are considering the comfort and subtle feel they deliver. Was riding Turbo Cottons with latex before but wanted to go tubeless. I think that's the closest to the TC/latex you can get. Definitely a fan of Veloflex TLR, just need to be careful to replenish sealant regularly.

[Marin]

Always 6.0 bar front and 6.5 rear (67 kg)

Way too much pressure IMO

[Maddie]

What's your recommendation then?

[gigo91]

Is anybody running the Veloflex Corsa Evo TLR 28mm on a new Zipp 303 Firecrest or on a similar rim with 25mm internal width?
Veloflex support is refering to this blog: https://www.veloflex.it/en/blog/post/ro ... s-coupling

According to this, the setup is not officially supported by Veloflex.

[TobinHatesYou]

Is anybody running the Veloflex Corsa Evo TLR 28mm on a new Zipp 303 Firecrest or on a similar rim with 25mm internal width?
Veloflex support is refering to this blog: https://www.veloflex.it/en/blog/post/ro ... s-coupling

According to this, the setup is not officially supported by Veloflex.

I’ll just say that my tires were scarily loose when I took them off my hooked rims.

[hannawald]

Is anybody running the Veloflex Corsa Evo TLR 28mm on a new Zipp 303 Firecrest or on a similar rim with 25mm internal width?
Veloflex support is refering to this blog: https://www.veloflex.it/en/blog/post/ro ... s-coupling

According to this, the setup is not officially supported by Veloflex.

I’ll just say that my tires were scarily loose when I took them off my hooked rims.

+1

[ultimobici]

ETRTO is there for a reason. Just because it is possible to do something doesn’t mean it’s safe. Just because someone has managed to get away with a particular combination that is not recommended doesn’t mean it will be safe all the time.


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[gigo91]

ETRTO don't even mention 25c wheels for hookless. Zipp, Enve are saying that I can run 27-28 mm tubeless tires on their 25c wheels.
So I, as a customer, don't get it. Are the ETRTO regulations outdated? I can't imagine that Zipp or Enve are giving a green light for something, which don't work... Or has andybody other experiences?

[TobinHatesYou]

ETRTO don't even mention 25c wheels for hookless. Zipp, Enve are saying that I can run 27-28 mm tubeless tires on their 25c wheels.
So I, as a customer, don't get it. Are the ETRTO regulations outdated? I can't imagine that Zipp or Enve are giving a green light for something, which don't work... Or has andybody other experiences?

Sort of outdated. ETRTO standards up until now have not included tubeless bicycle tires, and thus the specifications for straight-sided or crotchet-style rims were officially meant for tubed clinchers only.

[nafaiutb]

ETRTO don't even mention 25c wheels for hookless. Zipp, Enve are saying that I can run 27-28 mm tubeless tires on their 25c wheels.
So I, as a customer, don't get it. Are the ETRTO regulations outdated? I can't imagine that Zipp or Enve are giving a green light for something, which don't work... Or has andybody other experiences?

As for Enve selling things that don't work, just think back to their rims that cut tyre sidewalls, which they tried to blame on the tyre manufacturers. I certainly wouldn't buy their products, nor accept their "green light" that something was safe.

[TobinHatesYou]

As for Enve selling things that don't work, just think back to their rims that cut tyre sidewalls, which they tried to blame on the tyre manufacturers. I certainly wouldn't buy their products, nor accept their "green light" that something was safe.

Uh, it mostly is the clincher tire’s fault, while the rim can contribute as well. The most common cotton clincher + rim failure on this very forum seems to be with Campagnolo Boras, for example.

[Pierre86]

As for Enve selling things that don't work, just think back to their rims that cut tyre sidewalls, which they tried to blame on the tyre manufacturers. I certainly wouldn't buy their products, nor accept their "green light" that something was safe.

Uh, it mostly is the clincher tire’s fault, while the rim can contribute as well. The most common cotton clincher + rim failure on this very forum seems to be with Campagnolo Boras, for example.

Yep
Veloflex even specifically released a set of tires to address this issue, they used to not recommend their tyres for carbon clinchers specifically

[ultimobici]

As for Enve selling things that don't work, just think back to their rims that cut tyre sidewalls, which they tried to blame on the tyre manufacturers. I certainly wouldn't buy their products, nor accept their "green light" that something was safe.

Uh, it mostly is the clincher tire’s fault, while the rim can contribute as well. The most common cotton clincher + rim failure on this very forum seems to be with Campagnolo Boras, for example.

Really?? We have a salesperson who has been speccing Vittoria open tubulars on Bora clinchers for years. If this was a real issue we’d have seen warranty returns galore. But we’ve not had so much as one in 10 years plus.


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[TobinHatesYou]

Really?? We have a salesperson who has been speccing Vittoria open tubulars on Bora clinchers for years. If this was a real issue we’d have seen warranty returns galore. But we’ve not had so much as one in 10 years plus.

We've had a couple threads on the matter here. One is hidden in an ENVE topic and I'm pretty sure you replied to it. Another very contentious thread involved a pair of WTO 60s. That's not a large sample size, but it's larger than that of ENVE rims on this board. Furthermore, Veloflex and others are making reinforced cotton clincher tires now, so they admit it's a problem. Seems reasonable to point out that the onus is primarily on the tire brands to make less shitty cotton clinchers when this simply is not a problem with vulcanized tires.