We periodically review mountain bike components that can only be described with superlatives. As a writer, those less descriptive and more blunt-force terms are less than favorable. They can make an article feel sensational, and don’t leave much for the reader’s preferences or interpretation to chew on. However, sometimes they’re necessary.
The new DH22 Tires from Michelin are one such piece of gear. They are the grippiest, fastest descending, most supportive, most robust, heaviest, hardest to set up tubeless, and hardest to pedal set of tires I have ever ridden. That’s a load of mosts. What are the tires for? They are for downhill racers and folks who like to go to the bike park or shuttle bus for a full day of disregarding the brakes. While there are a number of EWS athletes racing on this new tread, I wouldn’t want to pedal these tires uphill for hours if there was a lighter option.
What I want to do doesn’t always factor into testing. I climbed for more hours than I care to admit aboard these tires, feeling like my rear brake was dragging all the way up. On one four-hour pedal, I started bonking half way through and pulled over to check that my brake calipers weren’t misaligned a few times, which doubled as an excuse to pause for a rest. The DH22 tires’ gummy grip and puncture-proofing qualities are designed 100% for downhill racing, and it’s clear that the engineers at Michelin didn’t think once about climbing on these 1,500g tires. That’s right, the 29 x 2.4″ pair weighs 3,000g (6.61lbs). The only people racing six-hour enduro events on these are hero-level fit athletes.
Enough about what the tires are not made to do. On the way back downhill I managed to scare myself with the amount of speed and lean I could achieve above the DH22’s. The widely spaced tread grips every surface better than any other gravity tire I’ve tested, and I’ve tested a truckload of them. From hardpacked clay to wet roots, the tread clings to anything, allowing the pilot to take faster and riskier lines to shave seconds off a run.
The lugs don’t require any fancy siping to achieve that grip. They simply use ultra soft rubber that makes rock climbing shoe soles feel tough. Unlike the Michelin Wild Enduro tread, the DH22 knobs don’t line up all the way across the tire as one solid force. The two center tread bits alternate between a narrower pairing and a more separated configuration, and the shoulder lugs are spaced in line with the gaps of those central lugs, creating a clean transition between the rows while maintaining ample mud-clearing gaps.
I rode with these tires at Pila Bike Park in Valle D’Aosta a few times and blew my former descent times away by wide margins. The heavy-handed grip that the tread creates on bermed and flat corners is unprecedented. That same gummy goodness that makes them feel terrible on the climb puts them at the top of the gravity-grip pile. With 20PSI up front and about 24PSI in the rear, the tread and carcass didn’t squirm a bit, no matter how hard I pushed them into rough and loose earth.
On to the carcass. The 2-ply 55TPI casing is one of the most rigid I have seen. With its tubeless wire bead, the DH22 stands perfectly round and tall when you lean the unmounted tire against a wall. That thick casing is designed to provide maximum puncture protection and cornering stability, and it does both of those things with aplomb. I rode the IXS downhill course at Pila, and clanged my rim against a baker’s dozen rocks without a puncture — despite not having an insert in the rear tire. Deep in banked turns and harder compressions the casing holds up forcefully, and allowed me to push the bike harder into the turn without any concern that the sidewalls would flex or fold.
Downhillers and park partiers will want to use a powerful air compressor to set these tires up tubeless. Their rigid sidewalls make it tricky to get the bead to seat, and the extra air pressure will help. I have a Bontrager Flash Charger pump that has seated hundreds of tires without issue, but it couldn’t make these budge. I had to use a friend’s compressor, and that alone wasn’t enough. We had to go the old-school tubeless route, mounting the bead with a tube first, then gently removing the bead on one side to take the tube out and add the valve and sealant. With one bead mounted the tire popped right into place, and it has stayed put since.
While the casing of these tires will likely last a lifetime, the tread will not. The soft compound loses a lot of material to gain all of that grip, and the tradeoff is that these tires will likely not roll through a full season. They are a good candidate for regular rotation. Once the rear wears thin, rotate the front to the rear and then replace the front.
Michelin says that the DH22 is best for hard packed to loose conditions, while their new DH34 offers a faster rolling tread pattern, and the DH Mud takes care of the sloppier stuff. There is also a DH34 Bike Park version that’s about 100g lighter, with a slightly harder rubber compound to last through the summer. The DH22 retails for €60.
Thanks to Michelin for sending the DH22 tires for testing and review.