In this article we offer some insight from our long term tests on Maxxis' DoubleDown tire casing used in a Downhill application. You're going to want to read this one!
Earlier this year, two of our riders on The Gravity Crew started testing DoubleDown casings on our DH bikes for the front tire. We wanted the ease of install that folding beads offer for tubeless setups, and we were optimistic that we could benefit from 220 grams (.5 lbs.) of weight savings on the wheel. That's right, this tire saves a half pound over your wire bead DHF!! We aren't exactly concerned with having the lightest DH bike on the mountain, but we know that kind of weight savings on the wheel is noteworthy.
Ben and I were the test dummies. I weigh in at around 198 lbs. with all of my riding gear, and Ben is around 145 lbs. He's a much more dynamic rider than I am, but I tend to spend more time on the gnarly tech stuff than trying to blow up berms and hit massive jumps. So we were able put these tires through their paces riding at fast pace in all types of conditions. From Windrock, TN to Whistler Bike Park. The results are in: these tires perform just as well as their wire bead DH casing counterparts. This one here has over 60,000 feet of descending in some the the driest, hardest dirt we've ever ridden. I think it held up quite well, and the sidewall looks great too:
We have raced this tire, thrashed it at Whistler, hammered rock gardens at Windrock and Beech Mountain and we have zero failures to report. On the contrary, the traction and other performance characteristics seem on par with the wire bead version. So, take it from us - this DoubleDown casing is one tough tire. Time to ditch those wire beads, enjoy easy tubeless install, and drop some weight where it matters!