WTB Gets It, Ignores UCI Rules with New Cross Boss 35c Tubeless Tire

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Finally tire companies are starting to get it. We’ve been shouting for years that 99% of clincher and tubeless racers don’t race UCI races, don’t care about maximum tire widths, and are better served by higher-volume tires that allow lower pressures and lower rolling resistance to compete against tubular-equipped racers. For a few racers, the one race where tire widths come into play is Nationals, where non-UCI categories have a 35c limit (which did not appear to be enforced in Boulder).

And so it baffles us that so many new clinchers and tubeless tires are coming in 32c or 33c tire widths. Some companies, like Specialized, are even going backwards, cancelling CXM’s Editors’ Award-winning Captain 2Bliss 35c tire and moving towards narrower 33c versions of the Tracer, Trigger and Terra. Sure, the Kenda/NoTubes team races tubeless, and we predict one day more UCI racers going tubeless, but we’re not there yet.

Thankfully companies like Ritchey, with its high-volume Shield WCS tire, and now WTB, with its just-announced Cross Boss 35c tubeless tire, having been paying attention and are serving the racers not racing tubulars and not racing UCI races (i.e. paying customers).

WTB's new Cross Boss cyclocross tire come in one 35c width and is tubeless ready.

WTB’s new Cross Boss cyclocross tire come in one 35c width and is tubeless ready.

We’ve reviewed WTB’s Cross Wolf tire positively, appreciating its aggressive but relatively-smooth rolling tread, but have always wished for more volume, as it measured out at just 29mm on a “standard” road rim. When the tubeless Cross Wolf TCS was announced last fall, we applauded the move, but also commented:

“The downside of the Cross Wolf is that it remains a bit narrow, and although the true width of 32mm on the ChrisCross rim will make it UCI compliant, we maintain that the target market shouldn’t be the small numbers of UCI racers but the everyday racer who is trying to find a reliable, affordable way to run lower pressure. WTB has followed a common path though, as Kenda, Vittoria and IRC all went UCI-compliant in their tubeless widths, and only Specialized and NoTubes offer higher-volume tubeless tires.”

WTB's new Cross Boss Tire.

WTB’s new Cross Boss Tire.

WTB has now addressed this complaint, with the new 35c Cross Boss TCS tire. The $54.95 tire will only come in a TCS Light version, with its tubeless-ready bead, meaning the company is going all-in on tubeless (you can still use an inner tube in this tire, but WTB won’t make a lighter, non-tubeless version).

The tire features a rounded profile, high volume casing with a tightly spaced center tread pattern, and more open side knobs that WTB says are “designed for speed over hard pack with the ability to still shed in intermediate conditions.” WTB admits the tire will be too wide for those racing in UCI Elite events, but expects the 35c tubeless tire to still should hold plenty of appeal for amateur racers who have shifted to tubeless. Amen.

“We have been asked for a higher volume ’cross tire for quite some time,” stated WTB’s Product Manager, Chris Feucht. “Many riders are unwilling to sacrifice comfort, traction, and fun to appease the UCI’s stringent 33c size requirement. Add Dual DNA rubber with a sticky side knob compound and enough volume to really get the benefit of tubeless usage and it’s pretty hard to not have fun on this [Cross Boss] tire.”

Cross Boss 700 x 35c TCS Light tires will use WTB’s TCS bead for sealant retention and repeatable tubeless usage. The TCS Light version will feature WTB’s Dual DNA rubber, combining sticky cornering tread with a faster rolling center compound.

The Cross Boss tires are projected to weigh 398g, will retail for $54.95 USD, and have a projected availability of September 2014.

WTB now offers plenty of non-UCI compliant 700c off-road tires in addition to the Cross Boss. At Frost Bike 2014 we also got an in-person look at some of these other tires that may appeal to the cyclocross, gravel and mixed-terrain crowd, including the previously announced Nano 40c gravel tire, seen in all its high-volume glory below:

The new Nano 40c gravel / monster cross tire will come in a Race and Cross version. © Cyclocross Magazine

The new Nano 40c gravel / monster cross tire will come in a Race and Cross version. © Cyclocross Magazine

The Nano will come in two versions, the 470g, $49.95 Race and the 550g, $31.95 Comp.

The company also said its 27tpi Allterainasaurus, which comes in 32c and 37c widths, remains a popular, affordable option at $31.95 among the gravel crowd.

The WTB Allterrainasaurus remains a popular hardpack dirt and gravel tire and comes in 32 and 37c widths. © Cyclocross Magazine

The WTB Allterrainasaurus remains a popular hardpack dirt and gravel tire and comes in 32 and 37c widths. © Cyclocross Magazine

Don’t care about weight or suppleness and just want something that’s bomb proof? WTB’s sister company, Freedom Tire, was showing its Ryder 38c tire. The tire features a tightly-packed tread, a puncture-resistant “Urban Barrier” and is just $28.99. It’s not light at 665g, but aimed at touring and “Professional Commuters.” Hopefully the UCI won’t impose width restrictions in this new professional category.

Freedom Tires, WTB's sister company, offers the Ryder gravel / commuting tire. It's heavy at 665g but durable. $28.99 © Cyclocross Magazine

Freedom Tires, WTB’s sister company, offers the Ryder gravel / commuting tire. It’s heavy at 665g but durable. $28.99 © Cyclocross Magazine

 

 

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11 comments
matthewwanderer
matthewwanderer

Has WTB changed the way they measure their product? I have (and love) the long-discontinued WTB Interwolf 700x38, but it's nowhere near 38c by today's measurements. My Clement LAS is advertised as 33c and it's far wider than the Interwolf, for example.

RobertHamlin1
RobertHamlin1

Cross Wolf and i19 was flawless tubeless at it's very best. No burps ever. Now I get the volume I have been wanting! Nice work WTB!

Scott Symon
Scott Symon

Sweet! Do you know if they will mount up to Stan's Iron Cross rims? I'm aware there are issues with WTB TCS mountain bike tires and Stan's mountain bike rims.

Brian Nelson
Brian Nelson

Tell us how you really feel Andrew. Practicality dictates design? Makes way too much sense.

jverheul
jverheul

@cyclocross Nice size, but it looks like it'll pack up pretty easily with that knob spacing.

craigmacintyre
craigmacintyre

@jacksplats @cyclocross@W_T_BLOL!  I am assuming this was said in complete jest ... these actually look pretty cool and 35mm is about perfect for tubeless for cross.

cyclocross
cyclocross moderator

@jverheul @cyclocross   "designed for speed over hard pack with the ability to still shed in intermediate conditions." which probably means not intended for super muddy days. 

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