I had set these up front and back to try and get as much traction during the dry PNW summer. Not a great idea. On the rear, this wears super quickly if youre riding any tarmac between off-road sections. Also, it didnt hook up on ourloose-over-hard rock and gravel. Instead, I switched to an MDX on the rear (run in reverse to scoop and bite), and this worked great. Just rode yesterday on a wet, rooty and rocky XC trail, and this stuck like glue.
First race this last weekend running the tubeless versions of the PDX and I'm very impressed. Conditions were terrible, temps in the low 30's and long stretches of deep mucky mud, including uphill and down. Snow and ice as well, loose wet gravel, slick grass, which meant perfect 'cross racing conditions! I could really feel the difference of these tires over my previous 32mm Grifo Challenge tubed tires that came with my bike. Very grippy everywhere in the mud, grass, wet, ice, snow.
I ran them 25 psi front, 27 psi rear, and I'm 193 lbs and I had no problems at all, didn't feel like I was rolling on the rim, even through some rocky sections, I'd go in thinking I'd have to pick a perfect line, then remembered I'm running tubeless so no worries of pinch flats!
Overall I can tell these are going to be one great set of tires for racing in classic PNW 'cross conditions.
I'd highly recommend them if your into mud.
Any muddy cyclocross race in the Pacific Northwest will have plenty of people running these clinchers, and for good reason. They drive through mud without getting caked up, they stick to the ground in corners, and they even roll efficiently over asphalt and dry ground.
Here in the Pacific Northwest you're likely to see more PDX's on the start line of a 'cross race than any other tire. I'd heard nothing but good things said about them so I decided to give them a go for the 2014-2015 season. I've been running them in a variety of conditions at 40ish psi. with latex tubes and have found the traction and ride quality to be better than any other tire I've ridden. I'd definitely buy again. Also, as an added bonus, they mount up super easy - I haven't even needed to use tire levers.
The only thing to be aware of is that the rubber compound feels really soft. I'm sure this is probably why the traction is so good and the ride is so supple, but if you spend a lot of time on asphalt I'd go with another tire.
These came in at 35.4 for the 33mm size. Sadly they wouldn't fit in my frame on the rear. I plan to use on the front (or get a frame with greater clearance) soon. For the weenies out there, my scale shows these tires at 280 grams.
I put these on prior to a muddy cross race with a lot of grass that was churned into mud. Had great traction all day, and could ride sections others could not. The best cross tire I've tried to date.
These are the first knobby tires I've owned for a 700c bike. I love them! They've been through about 30 miles of rough gravel and 5 cyclocross races and they still seem to have a bunch of tread left. The pricing at biketiresdirect is great. You won't find them cheaper elsewhere. I wasn't surprised to see the majority of guys at cyclocross races rocking these exact tires. You won't be disappointed.
Even though it is described as a mud tire, this one has become my favorite all-around cross choice. Traction is great on grass, and they roll well on every surface I've taken them over. I've run them at 25-40 psi and had no flats to date.
Excellent all around tire which excels in the mud. Very supple rubber that yields round tire profile. Beautiful.
I ran these tires front and back last season, and they did great in almost any condition. This included loose hardpack (very good), grass (great), soupy mud (great), hardpack snow (very good), peanut butter mud (okay, but I'm not sure what would have been better), and powder snow (same). As mentioned below, the rubber is soft, so don't use them for training. Racing only, it's looking like one season rear and two seasons front.
I have been running a 70034 front and 70033 rear for the Cross Crusade race series. They do their namesake proud! I am using tubless-specific rims and running the tires tubeless with moderate pressures - between 32 and 40 psi depending on course conditions. I have had good to great performance in all the races I've used them in with the exception of one very slick day when I ran 40 psi in both tires. Too much bouncing and only fair traction. With just a little lower pressure, the tires perform exceptionally. I was previously racing on Challenge Griffo's with latex tubes and the tubeless setup wtih the Clements is definately an improvement, especially in really muddy conditions. The tires seem to clear mud very well. The tread pattern has good, predictible traction and seems to be relatively soft, aiding traction on the variety of surfaces typically encountered in racing (grass, mud, dusty dirt, asphalt, etc). Because of the softer compound, my guess is that these will be a single race-season tire if I use them for a significant amount of training rides as well as races. Lastly, I would credit my Stan's rims with the great tubeless performance I've had. Other rim designs might not work as well for running these tires tubeless.