Colin Bailey, who designed both of the original Minions, is obviously a really bright guy who understands tires. The longevity and spinoffs of the DHF are a glowing testament to this (see Specialized Butcher and Bontrager G4).
The original DHR, even for all its faults, still shows some thoughtful consideration relevant to a rear tire: the braking siping, the increased surface area (and hence faster rolling) offered with the big flat knobs, the V-shaped cup for braking when upright. It just suffers from one big, significant flaw… it’s a really crappy cornering tire. And when speed in corners is such a significant part of the sport, the lukewarm popularity of the DHR speaks for itself. (I’ve owned only one of these for a reason.)
Actually, there are two primary problems with the original DHR: when buying a 2.5 Minion DHF and a 2.5 Minion DHR, the DHR is bigger, which is absurd. And yes, the “F” and “R” designations do stand for Front and Rear. Don’t let some clueless choad on an internet forum tell you differently. Anyone who knows how tires work can obviously see that these were designed as a front and rear, respectively.
Now enter the DHR’s sucessor, the DHR2. (And let’s forget that the original DHR exists, okay?)
The most glaringly obvious trait of this new rolly strip is that it takes side knobs from the DHF. I don’t think there’s a rider on the planet familiar with the DHF who doesn’t see the wisdom in this. All those little “L” shapes that orient themselves like both of your hands making “Loser” signs at the same time (go ahead try it, that’s what your Minions look like on the ground), work to cup dirt. This gives the tire a place to hold dirt under braking when leaned over even the slightest bit. It also gives it a positive bite as your momentum pushes forward and the the tire is “pushed” into rolling. That’s the a good thing. And the straight siped knobs are just good old-fashioned cornering purists. The sipes allow the innner half to fold over a little bit, and leave a shape like this under pressure:
That’s a head on (or rearward if you prefer) view of the tire profile when the tire is leaned over. Those sipes are good because they increase the number of edges/corners that want to bite laterally and keep your wheels holding when momentum wants to push you to the outside of a turn.
We already know the side knobs of the Minion DHF work, so just rest assured that there will be no surprises here. The only other thing I have to say is that the side knobs on a 2.4 Minion DHR2 are just a tad bigger than what you’d find on a 2.5 or 2.7 DHF. I’ve tried to get an exact number with some calipers, but obtaining a consistent measurement with knobs that are a little “A-framed” and malleable is difficult. But they’re a little bigger and blockier. Not much, but enough to make the side knobs just a tad more stout. That’s a very good thing, because it’s something that’s discernible when riding. There’s just more support there. Just a little.
Well worth the read. This was quite an insight into tire design.
thank you Kevin.
Hi Kevin.
Thanks for your article.
I ride the older DHR 2.5 and I cut vertical sipes (carefully with a dremel) into the center ridge knobs and use it as a front tire here on Vancouver Island (much better than the Kenda Nevegal OEM tire) in the wet loam/mud/bareroots/rocks and platforms. As modified, it has served as a decent rolling and tracking front tire, granted not as good as my son’s Minion DHF, (my next tire).
WBP
An excellent and technically informative review, thanks!
Kevin, how about a Gear 101 article on tires? You seem to know your stuff.
Kevin, do you know how the width of the 2.3 and 2.4 DHR2 compares to a DHF 2.5? The 2.35 and 2.5 Maxxis tend to be undersized, but the newer 2.3 and 2.4s are reportedly measure more true. I’ll be pairing it with a 2.5 DHF and want it to be the same or slightly narrower. Thanks.
To answer my own question, the 2.4 DHR 2 is very slightly wider than the 2.5 DHF. I ran a 42a DHF 2.5 on the front and a 60a DHR 2 2.4 on the back all summer and it was good but can’t say I noticed much difference between a DHR 2 and a DHF on the back, maybe slightly better braking but I had new brakes this year and came off of a very worn rear tyre so it’s hard to tell. I’ll just get whichever is cheaper from now on.
I’ve got a 2.3 DHR 2 ready to go onto the rear next spring. Not mounted yet but it looks very slightly narrower than a DHF 2.5, perfect. Shallower knobs than a 2.4 though, so maybe shorter lifespan.
Thanks Kevin,
Waiting for my 2.3 x 29 DHR II for front and back on my LTc. Peeled the knobs off my Hans Dampf and Nobby Nic…
Thanks for the trimming tip!
Im looking at your finished tire and l have to be honest, l cant see what you did. Over and over i have been trying l just dont see.
JDW: look at the circled knobs on page 3. Cut those in about 2-3mm on each side. It doesn’t affect the braking of the knob itself but it opens up the channel a little bit more so that the sideknobs have more dirt to grab.
Actually there are three pics of circled knobs on that page, I just meant the second/middle pic.
Great! I see now.
Which compound did you use for the rear, the dual compound or the 3c? I am trying to decide which version to use for the rear in the PNW, where wet weather is common. Thx.
The “single” compound, which is essentially their maxxpro/60a durometer. I run that same setup (harder rear/softer front) up in your neck of the woods midsummer. But if it’s pissing for days on end, I definitely throw a sticky tire on the rear, Which in this case would be that 3C maxxgrip version, with the supertacky on the front. Keep in mind, this is a review of the dh casing ones, not what’s come out since the review in lighter casings.
Thanks so much for the effort in putting this together.
I’m a new rider, 12 months approx and I’m starting to get the feeling that I’m pushing beyond the tires limits, its probably my lack of ability but i would like to see if some different tires will help me progress without getting scared off by tires letting go all the time.
I currently run Ardent’s F/R 2.4/2.25 for UK Trail center riding and it almost feels as though “my” max cornering speed sits where the Ardents have that gap in gripi keep reading about so when i give it my best i seem to have little grip and back off. I know i could man up and commit more to get into the rest of the tires ability but im just not there confidence wise.
Would you recommend these tires (for lack of a better description), as the next tire up cornering confidence wise or would High Roller II’s be a better next step from Ardents?
Also, now that new variants are available do you think based on past experience that the single ply 2.30 in 3C EXO front AND rear would be a reasonable replacement for the Ardents or go with bigger front again? I only went larger front last time as people suggested that the 2.25 Ardents were poor as fronts but the 2.4 were considerably better. I’m looking at the 3c versions as i don’t change tires for wet/dry so thought id pick something “in the middle” if that makes any sense.
Bit long i know, Sorry.
But any advice you can offer i would greatly appreciate as i really like the sound of these but dont want to blow £100 and find them as slow as the older dhr/dhf super tackies that came with the bike!
Very comprehensive review. I’m currently in the market for new rubber. I’ve been pointed to the DHF an DHR2, but this might make me run DHR2 F and R. The DHR2 is almost 100g lighter too. What do you think? I value fast rolling and light weight, but my Ardents don’t have a stout enough casing
@KB
if i set up a DHR II on the front, do i have to invert the rotational direction of the tire? I’ve read that in a few places…
Thanks!
Nope. Rotation is same. Got this tyre couple days ago and im happy with DHR2 3c as front tyre!
Matt,
I was just re-reading Kevin’s great article to discuss with a pal who lives 3 mile from the Forest of Dean Trail centre where we ride a lot, I see you didn’t get a reply back in 2015 and guess that 5 years later you’ve worked it out?
At least you’ve been riding 6 years!
You didn’t mention the bike but I guess its not an XC if it came with DHR/F – personally I would think the Ardent is rear only unless it’s a real dry hardback surface only. It’s more like an XC tyre to me. I’m not sure its even capable enough rear – Friends agree.
A lot depends on the riding surface. I ride (mostly Southern) UK too, the UK Trail center riding you mention differs a lot as you know, all the way from natural woodland surfaces to hardback ‘BMX’ tracks.
And a lot of cornering is about weighting the tyres correctly and learning to lean the bike not the body (see Fabien Barel on cornering, youtube).
Of course the right tyres help a lot but don’t replace great technique.
Were your supplied tyres really “super tacky” I thought that compound disappeared years ago so I’d have expected Maxxterra (not so soft)? Maxxterra compound is pretty good on the rear.
Put them back on! DHR2 front DHF rear yeah, I know)
That DHR2 is a great tyre, if I chose to run a pair it’d be 2,5 WT maxxgrip upfront (and like Kevin I might cut it, but see below: the G5 is SO like a cut DHR2 its an easy pick if you don mind the DH casing, wire bead).
I like the DHR2 2.35 maxxterra (27.5) as a rear, I run that a lot on all surfaces and feel it wears well, pedals and rolls well
(better than my alternative Shorty, not as fast as my Mavic Quest or Spesh Slaughter but I don’t ride a lot of hardback, so really miss climbing traction and braking grip with those – so don’t use much.)
Last year, thanks to Chris Porter (Mr Mojo), I discovered the Maxxis Aggressor DD, dual compound 2.5WT and that’s my favourite [non Winter] rear now, pedals lovely – fast, does everything well).
Seems to me the rear tyre is very very influential on how pedalling effort feels , MUCH less so the front.
I run a DH casing wire bead Bontrager G5 2.3 x 29 upfront a lot and the grip is just superb (better than a DHR2 I reckon) as it already has Kevins desired clear side channel.
see https://blisterreview.com/gear-reviews/bontrager-g5
In the woods where there is always soft ground and often roots I sometimes use a Magic Mary 29″ snakeskin 2.35, ‘orange’ compound (soft, not supersoft) upfront, I plan to add a cushscore to that, more grip, better rolling, aids suspension! I am not as keen on the Mary on trail centre hardback though.
Hope you’re enjoying your riding, I like it more every year and I started in 86. I’m riding g a Geometron G1, that’s a big part of the story.
What are you thoughts on the Onza Aquila which Aaron Gwin designed? It’s similar to this one, but he specifically moved the side knobs to be more in line with the center ones.