Schwalbe's "Buzz Cut" Prototype XC Race Tire

May 18, 2023 at 11:47
by Matt Beer  
Fast rolling Shwalbe s for the Canyon Cllctv.

All of the secret components that brands have been working on over the off season are spilling into the races now, like Schwalbe’s prototype cross-country marathon tire. First reported by Bike Rumor, our onsite photographers also sent over close-ups of the redesigned tread from the Nove Mesto World Cup season opener.

The blue lettering of the “First Ride” hot patch signifies Schwalbe’s prototype and the tan wall could be solely to draw some attention. There’s a red line down the center to denote the Addix Speed compound, although there’s no telling what kind of casing or TPI is used.

photo

As for the tread, it’s closest to the Thunderburt, a fast-rolling, semi-slick tire with widely-spaced, medium-sized shoulder lugs but is much more uniform in block spacing. It’s also entirely different than the Racing Ray / Ralph combination of front and rear specific tires, but appears to be used as front and rear tire choice.

The new design features three identical rows of hollow, square blocks, with a siped transition knob, and a lower height shoulder lug that is spaced tighter than those found on the Thunderburt.

We’ll check in with Schwalbe to see what other information about the new tire we can drag out of them. If we were to guess, this much more evenly spaced tread will be an addition to the lineup, rather than a replacement.

Line Burquier s bike all polished up.


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Member since Mar 16, 2001
352 articles

107 Comments
  • 125 0
 Lycra Larry
  • 28 0
 Lycra Levi endorsed DC
  • 5 0
 Fast Cash
  • 39 0
 Slippery Sean
(You say slippery with an "SH")
  • 1 0
 Sutured Samantha
  • 2 0
 Lycra Levy, might encourage him to put away his gravel bike and return to PB podcast.
  • 97 0
 Puncture Pete
  • 14 2
 Torn side lugs Terry. Wait.. they could name any of their tires that.
  • 65 0
 Schwalbe - we've finished development, time to send it to the alliteration department for naming.
  • 5 0
 Department head: *reaches into bag of scrabble letters
  • 2 0
 What about the Hans Dampf? Did that bypass the alliteration department?
  • 3 0
 @Jules15: there needs to be the Franz Dampf to accompany it
  • 66 22
 Wait, there are specific XC tires? I thought the Dirt Roadies just raided bike shop dumpsters for worn-out Minions.
  • 11 32
flag ShredDoggg (May 18, 2023 at 13:05) (Below Threshold)
 Comment GOLD.
  • 6 2
 That's what I do. Worn down DHRs work great as front tires.
  • 38 1
 Washout Wally
  • 2 0
 This is my favorite of the many fine suggestions here in the comments section... and I love my Thunder Burts!
  • 29 0
 WHERE IS THE TACKY CHAN
  • 17 1
 Angry Adolf - ok, that's probably too much.
  • 15 0
 Looks like a Rock Razor w/ shorter corner knobs......
  • 5 1
 Maybe they won't tear off so fast.
  • 3 0
 So Rock Razors without the thing making them interesting then
  • 1 1
 This is what I was going to say — aren’t these just Rock Razors?
  • 2 1
 @TheR: Rock Razor is aimed at Trail/Enduro,
these though are XC tyres.
  • 1 2
 @FloImSchnee: What I’m saying, though, is that they’re the same tire!
  • 1 0
 @TheR: there is a certain similarity, still different.
  • 15 0
 Torn Tim
  • 13 0
 Leaky Larry
  • 13 3
 Photo 101… just cuz you have a 1.8 aperture doesn’t mean you have to use it… especially on a wheel, which by definition has only one focal point. Horrible images…
  • 8 0
 Hey now, it's only f3.2 ... at 1/1000s ...
  • 4 0
 Nah. WFO (wide f*ckin' open) is the only way
  • 11 0
 Holey Henry
  • 9 0
 Pumptrack Pete's!! Make this in a 26" and it would be awesome!!
  • 9 1
 As all the XC tyres slowly become Trail tyres they need to keep inventing new XC tyres.
  • 2 0
 Kinda like how the all new Tacoma is basically a 2010 Tundra in all dimensions. Bigger and heavier each generation.
  • 1 0
 @GTscoob: This is called model bloat. Maybe we’re seeing “tread bloat” in tires.
  • 9 0
 Flat Frank
  • 7 0
 Those sideknobs look half decent. I'd race this. I always wished Maxxis did an Ikon with a little bigger side knobs.
  • 5 0
 Agreed. Until then, I've found the Rekon rolls as well as the Ikon and has a little more traction.
  • 7 0
 Is that not the minion SS?
  • 6 0
 Rekon Race has been my go to, but I'm totally with you on that. I wish more XC tires still had some shoulder knobs you could really lean on.
  • 2 0
 @atestisthis: try the Aspen. It's more confidence inspiring in the corners compared to a front Ikon or Rekon Race.
  • 1 0
 @GTscoob: been on a set of 2.4 Aspens for one month and those things are unbelievably good. They roll really well and corner way better than Rekon Races. When you really lean the bike it's seems the Aspens just keep gripping like a proper trail tire, it's awesome.
Only downside is how bad they are when braking, but there had to be a trade off somewhere
  • 1 0
 @GTscoob: I have some Aspens. Didn't really get on with them. Maybe I'll give it another go since you and @Arierep seem to dig them
  • 2 0
 @atestisthis: yup, they seem to be a bit of a marmite tire, people either love them or find them deadly, not much in between. My hypothesis is that it might be correlated to the personal cornering style, by how one leans the bike on corners (not implying here that leaning more is better or better technique)
  • 7 0
 Looks like the old Kenda Small Block 8. What’s old is new again.
  • 2 0
 I thought the same thing.
  • 11 10
 Offer it in liteskin! Schwalbe ceased to be relevant for XC when they discontinued liteskin casing. If they can make this as light or lighter than the liteskin thunder yet then it will be interesting. Otherwise, don’t bother.
  • 10 2
 I bet they've got more podiums than you bro.....
  • 4 2
 Have you seen the XC courses lately?
  • 13 3
 Testing by Bicycle Rolling Resistance suggests that although Super Race casing is heavier than Liteskin, it has similar rolling resistance with about 33% better puncture resistance - assuming the puncture test protocol is a good analogy for pinch punctures. The BRR test protocol isn't a perfect representation of actual riding, but it's the best public data I'm aware of.

The increase in total system weight is approximately 0.2% - 0.35%, mainly depending on the weight of the rider. Even factoring in the greater significance of mass at the perimeter of the wheels, that seems a fair trade for increased puncture protection.

An extremely light rider may have less need for puncture protection and would benefit more from the reduced weight of Liteskin - or maybe a variant of Super Race without the central anti-puncture strip. That's a small share of the market, though, so I don't blame Schwalbe for reducing their SKU count - and I wouldn't be surprised if they offer pro-only versions for the lightest riders or smoothest courses.
  • 2 2
 @R-M-R: Bicycle Rolling Resistance doesn't provide any data on sidewall stability, or any kind of cut or pinch resistance (and in their defense they don't claim to). The problem with high-thread count tires (at mtb pressures) using a 'traditional' carcass construction is the sidewalls squirm more than a worm telling a misogynistic joke at a feminist convention... without additional cut-protection (or a gratuitous amount of rubber layered on to the carcass) they also have the cut resistance of wet toilet paper. In my opinion the only people that still lament XC tires getting a bit heavier (and gaining vastly superior handling and durability) are the same people that subscribe to flat-earth and election-denial conspiracies.
  • 3 2
 @nzandyb: Some people just aren't skilled or aggressive riders and/or their terrain is really tame. Nothing wrong with that, and for those people, super light and fast tires can work.

For more aggressive riders and/or more severe terrain, we have to accept as much weight and rolling resistance as necessary for our tires to survive and to be able to enjoy riding as hard as we want.

I'm currently testing tires all the way at the light end of the spectrum. They're faster overall on most terrain (within their appropriate range), but the need to back off on descents and be vigilant for sharp rocks takes the fun out of the experience for me. Still, there exists a use case for them.
  • 1 4
 @R-M-R: I'd agree in the sense that there are always niches of riders for every possible product. Those that ride their 16 lb rigid carbon bikes up a straight-hardpack-fire-road, and then descend on the same road would be a great example of the use case existing (I'm only half serious ;-) ). Personally, having multiple race days ruined by high-thread count tires slashing as I brush by some dandelion on the side of the trail makes me pretty biased. Youth XC racing (riders under 100lbs) are by far the best case I can think of for these sort of old-school tires, but what parent wants to deal with tires that aren't just 'set and forget'?
  • 6 0
 Ripped Rudi
  • 6 0
 Spandy Randy
  • 5 0
 Skid Mark
  • 2 0
 I rocked a Razor on the front of my XC bike...for about 2 rides. Was terrifying. Not seeing how this would be better.
  • 1 1
 Very similar to Specialized’s Renegade 29x2.35. These new Schwalbe Buzz Curt’s are run in 2.4. I wonder the real world width as the current Schwalbe’s run pretty narrow.
  • 3 0
 Renegade but with actual side knobs
  • 3 0
 I would actually run these on my DJ if they made a 26 version.
  • 3 0
 Hollow Hal
  • 2 0
 Buzz is also a name, and "Buzzy Buzz" has a very Schwalbe feel to it.
  • 3 0
 Speedy Suzan
  • 2 0
 If they make it in a 2" or 2.1" it'll be a great gravel tyre
  • 1 0
 Up cycled Thunder Burt’s on my commuter Ebike. Fast, easy to drift and okay on gravel. Sketchy in the wet
  • 2 0
 Some of y’all have never ridden an XC tire and it shows.
  • 3 0
 Gravel Gary
  • 1 0
 If that red line is down the middle, then this is the first asymmetric tire I know of.
  • 2 1
 Looks -sick- can't wait to have this for my XC bike.
  • 2 0
 Grippin' Gregor
  • 1 0
 looks like an Intense Micro-Knobby about 2009.
  • 2 0
 Bombin Bob
  • 1 0
 It's never gonna get close to the legendary Ritchey Megabyte Z Max
  • 1 2
 Wickr id: peterking2014

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t.me/talktomehere2023
  • 1 2
 Looks like the old (better) Racing Ralph, but with meatier corner knobs and less prominent center knobs.
  • 17 0
 Exactly the same, just completely different.
  • 2 0
 @tpfenning: Looks more like a slightly beefed up Thunder Burt. I saw it on another comment thread, but how about Lightning Lou?
  • 4 0
 Kari. It's like Carrie but with a K instead of a C, and an ah instead of an eh, and only one r, and an i instead of an ie
  • 1 0
 smiles miles
  • 1 0
 Sticky Speedster.
  • 1 0
 Racing Rhonda
  • 1 0
 Snakey Bitey
  • 1 2
 XC tires, because nothing saps your energy more than crashing because you lost grip, or fixing a flat trailside.
  • 1 0
 Wrandy Waffle
  • 2 1
 The classic Dick Pound!
  • 1 0
 Xwalbe XR2
  • 1 2
 Great place here

Telegram: @xanax2022,

t.me/talktomehere2023
  • 2 5
 Wiener Wilmer
  • 1 0
 As in weight weenie ya weirdos
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