The WTB Exiwolf TCS Tire is perfect when footing isn't sure. The tall lugs are spaced wide apart to offer plenty of bite in loose trail conditions. While the void space and spikey knobs add grip, they're also beneficial when it comes to sticky or wet conditions. The tread design sheds goo quickly so you wonAAAt fight the detrimental effects of weight or buildup on your tires. While weAAAve seen the Exiwolf before, WTB gives its newest version a bit of a twist -- almost literally. What was once a tire that featured a regular, consistent tread pattern from one row of knobs to the next, the Exiwolf TCS tire has a distinctly asymmetrical design. This helps it bite into the trail at all times, regardless of the lean angle. And, like some of WTB's cross-country tires, it has a line of closely spaced center knobs for fast rolling on hard surfaces. The DNA rubber compound blends traction, performance, and durability.The WTB Exiwolf TCS Tire is available in the color Black and in a 26 x 2.1in size. The tread is composed of 60a rubber, and its TCS (Tubeless Compatible System) uses a UST style kevlar reinforced bead. ItAAAs ready to be used without tubes, and it does without the typical airproofing butyl layer of heavier UST tires. We recommend adding a liquid sealant to it to protect against punctures on the trail.
Strengths: Work well tubeless. Pretty fast, good grip for relatively low knob height. Fantastic deal for the price I paid ($18.75).
Weaknesses: None obvious so far. Maybe just the fact that it probably takes a compressor to get them aired up on non-UST rims.
I found these on sale at Competitive Cyclist for $18.75 each a few months ago. That seemed ridiculously low, so I ordered up a set right away, figuring I would order more if I liked them. I should have ordered a dozen at that price because the price went away the next time I looked.
The Exiwolfs have been great on a set of non-tubeless Vuelta SL rims. Gorilla Tape and Stans have worked out fine. They fit a little loose on the rim, so a compressor and some Stans mess was necessary to get them beaded up the first time. The rear loses a couple pounds of air over a week's time, but that's no problem. I ride where there are lots of goathead thorns and have pulled at least a dozen out of these tires these summer. A little Stans pisses out and then they seal right up. Couldn't ask for better flat protection.
The ride and trail characteristics are both pretty good in my SoCal conditions of mostly loose over hard, some rocks, and sandy/dusty. They may not be the ultra grippiest, but at about 28 psi they stick to most things and I can tell when I'm getting to the edge of the grip. I have no problem leaning hard into them in the corners - I can't say that I've had them break loose on me yet. I don't think the tread would lend itself to mud, but for dry conditions these tires are really nice. I've also been pleased with the wear. Minimal tread wear over a summer of riding them. The compound is probably harder than it feels when running them tubeless at fairly low PSI.
These tires at the price I paid made for an excellent semi-ghetto tubeless setup for less money than just sealing up non-tubeless tires with Stans and they perform better. I I ever see 'em that cheap again, I am definitely going to buy several more.