Plus tires aren’t just for mountain bikes any more. With the success of oversized tires firmly established in the dirt, the originator of the plus tire movement is moving to road bikes as the next likely target. Yes, Road Plus is a thing, and in a lot of ways, it might be an even better application of oversized tires on smaller wheels.
Designed to fit into endurance road bikes designed around midsize 700c tires (28-35), the Byway (and its knobby-less cousin, the Horizon) claims to add comfort and versatility to drop bar bikes.
The Byway uses a dual compound, with firmer rubber in the center for speed, softer on the sides for cornering grip. The tan sidewall is a good compromise between thin and supple or thick and supportive. I like the transition from slick to file tread to slim cornering knobs.
Tubeless setup on a set of Sun Charger wheels was accomplished with a floor pump, and I stuck to 40 psi for the entire review period. At those pressures, the Byways rolled along pavement much like a wide 700c tire, but the 540 gram weight was noticeable when picking up the pace or trying to chase down a wheel. I won’t be entering any road races with these tires, but outside of that, they won’t ruin your day, even if your ride is solely on pavement.
But not riding dirt on these tires would be a crying shame. They absolutely shine in dry, loose conditions, adding a level of comfort and control that had me wishing for a dropper post to go get just a little more rad. I’ve spent some time on Horizons, and they can get pretty sketched out in loose gravel, the Byways manage to keep it all together. Those tiny cornering knobs don’t look like much to riders used to mountain bike tires, but they make a noticeable difference. Those knobs give up some corner speed to the Horizons on the road, but since most of my road riding is done getting to the dirt, I’ll take that trade-off.
They aren’t ideal in wet conditions, as the side knobs become very unpredictable in off-camber situations. That slick center doesn’t offer much traction for braking in the slime. That said, they do a lot better than expected, and being gentle with pedal, steering and braking inputs kept me upright through a lot more slop than I expected. WTB recently released the Resolute, a slightly skinnier tire with similar side knobs and actual tread in the middle of the tire, which should make it a better choice when things get sloppy.
I’m going to guess that most riders of my weight will be fine at pressures lower than 40 psi, but I was happy with the cornering and sidewall support at 40, and combined with a steel frame and fork, these tires are a magic carpet ride, even compared to the 700×38 tires I was previously using. I’ve become pretty adept at pinch flatting on dirt roads, even with pressures as high as 55 psi in 700×40 tires, so I’m very happy to have some proper tubeless tires that can handle my dirt-road antics.
I tip my hat to WTB for the design of these tires. It would have been easy to stick bigger knobs on the Horizon casing, but this minimalist approach keeps weights reasonable while keeping the positive on-road ride characteristics almost completely intact. Its only real weakness might be that it only comes in 650bx47. A few 700c sizes would probably sell like wildfire.
Make no mistake, these tires are more about pavement and dry dirt than smashing berms and shredding gnar. But there are literally dozens of tires that do that. This tire provides just enough confidence to always want to find out what is down that dirt road or gravel path or not-too-steep singletrack, while rolling well. And I’m not going to lie, that tan sidewall is hot as hell.
This review originally appeared in Dirt Rag 201. Subscribe today to be the first to see all our reality-tested bike reviews, and while you’re at it, sign up for our weekly email newsletter to get the latest web stories in your inbox every Tuesday!