Schwalbe x-one speed tire review grippy and quick, but pressure-sensitive cyclingtips tgask


The Schwalbe X-One Speed fills the gap between the dirt road-friendly G-One Speed, the ultra-popular G-One Allround, and the la gas aggressively knobby X-One Bite. Schwalbe says its latest mixed-surface tire is a “speed miracle” on dry tracks with stable cornering characteristics thanks to its progressive tread design, but how well it lives up to that billing depends heavily on carefully dialing in your pressure. Gravel vs. cyclocross

Many will view the X-One Speed as yet another gravel option from Schwalbe, but the company intends it more as part of a three-model range aimed more specifically at cyclocross, with the X-One Allround in the middle, the more aggressively treaded X-One Bite for mud and softer ground, and now this new one for harder surfaces. The model name itself should perhaps be the biggest clue about that aim, but it’s also evident in the sizes offered. While the multi-surface G-One Speed 3 gases that cause global warming and G-One Allround are both available in a generous range of widths, both the X-One Speed and X-One Bite are only available in a UCI-friendly 33c casing.

Nevertheless, the X-One Speed borrows some elements from the ultra-versatile G-One family, such as the casing construction and the round, low-profile knobs that are tightly spaced down the center of the tread. As with the G-One, the idea with that physics c electricity and magnetism distinctive pattern is to provide a modicum of extra grip for more dependable drive and braking traction when upright, along with the surprisingly low rolling resistance that has characterized the G-One family.

Schwalbe pairs that speedy center tread with knobs that get more aggressive as you move outward from the center. At the very edge is an array of 2.5mm-tall dash-like blocks, while the tapered transition knobs in between resemble little rubber doorstops. And although the X-One Bite also uses a progressive knob design, the change in height from 3mm in the gas vs electric water heater savings center to 4mm out at the edge is far more subtle than it is here. If you’re a mountain biker who was around in the late-1990s and wondering why the tread seems so familiar, it’s very similar to what Bontrager once did with the Revolt SS.

The X-One Speed may only be produced in a single width, but Schwalbe does produce it in two casing constructions. The top-end Evolution model tested here sports a “Tubeless Easy” 127TPI nylon casing and thinner Microskin casing reinforcement for more suppleness, while the mid-range Performance variant makes do with a less pliable 67TPI casing, a tougher RaceGuard protection layer, and tube-type construction.

Interestingly, claimed weights are the opposite of what you’d expect, with the X-One Speed Evolution coming in at 370g each, and the cheaper X-One Speed Performance supposedly tipping the scales at a slightly lighter electricity trading hubs 350g (although the total weights will flip again once the mass of an inner tube is added to the Performance version). Actual weight for my pair of Evolution test tires straddled the claimed figure at 361g and 391g apiece — roughly on-par with claims, but with more variation than I’m used to seeing these days.

As with every tire, the X-One Speed comes with a recommended range of inflation k electric jobs 2015 pressures, which in this case is 40-70psi. I’m no stranger to running tubeless cyclocross tires, though, having made the switch from tubulars to tubeless full-time more than six years ago. Pressures in the low-20s have historically presented few issues for my 70kg frame, but seeing as how my testing of the X-One Speeds would include some rocky terrain, I initially went with what I thought was electricity and magnetism worksheets high school a fairly conservative 35psi.

At that pressure, the X-One Speed felt anything but speedy. In fact, it was notably slow and sluggish, with disappointing levels of rolling resistance from the not-so-supple casing. Worse still, I found the cornering grip to be a bit lacking as well. Whereas the larger G-One Allround models can rely on their generous casing widths to provide grip on a wide range of surfaces, the X-One Speed instead has to lean — literally — on its knob design, which, at least to me, didn’t seem sufficient to close that gap in footprint size.