Comments on: Dynafit ZZero 4 — Peter’s Take

By: Brandon

Brandon — Thu, 12 Feb 2009 19:43:57 +0000

Hey Lou – your website rules. thanks for putting in all the leg work and sharing so others can benefit. Hopefully this thread is an appropriate place for this question. I am looking at the ZZero4 U-TF vs. the ZZero4 C-TF. Best I can tell the main difference between the two is a slight weight and material difference (Pebax and PU vs. mainly Pebax) and therefore slight difference in stiffness. U-TF’s being the slightly stiffer boot. I notice a surprising lack of reviews or commets online about the ZZero4 U-TF’s and i notice that backcountry.com does not even carry them. Any beta on these boots? Does the world think they suck and I just haven’t noticed yet?

By: Giacomo

Giacomo — Sun, 30 Nov 2008 21:33:17 +0000

Hi Lou, thank you for your reply! In the next days I will use the boots, here we have more than a meter of fresh snow, it will be a great inauguration! :)

By: Lou

Lou — Sun, 30 Nov 2008 13:57:44 +0000

In my opinion the carbon on the tongue just allows you to buckle the boot tight without as much pressure on top of foot. It is replaced by some fairly stiff plastic of some sort that has pretty much the same function. I wouldn’t worry about it. I’ve got a pair of the new model ZZeros here and they’re equal in quality and function to last year’s as far as I can tell.

By: Giacomo

Giacomo — Sun, 30 Nov 2008 09:21:05 +0000

Hi! I’ve bought this year model of the zzero 4C and I noticed that the tongue has no more a carbon insert. They told me that some people had problems because they felt it too stiff during their ascents and so dynafit decided to remove it. What do you think about it? The seller can swap the tongue of my boots with the old one but I don’t know if it would be a good idea…

By: Lou

Lou — Mon, 24 Nov 2008 13:59:00 +0000

Dan, all sorts of ski boots are made with polyurethane. Sure, they change stiffness more than a Pebax boot when the temperature changes, but it’s not that big a deal (though Pebax is the best stuff IMHO). We bring it up here for a number of reasons, recently to point out how trying to rate boot stiffness on a numeric scale is imprecise.

By: Dan

Dan — Mon, 24 Nov 2008 08:31:12 +0000

Sorry this is slightly off topic but does anyone have any experience with the dynafit zzero 4 u-tf boot or any other polyurethane based boot and how it supposedly gets stiffer in colder weather. I am looking at getting the dynafit zzero 4 u-tf but it seems odd to have a boot that changes in stiffness as the temperature gets colder. Would one notice a performance difference from a mild day (mid 30s) at the resort to a cold day (single digits) on a glacier in terms of the stiffness of the boot. I would think it could throw someone off if they get used to skiing in a milder temperature and then all of a sudden they are entering a steep chute at the top of a mountain and the boot performs totally differently. Any comments? Thanks