Well all I know is that I'm 90kgs (180lbs?) and 185cm. I've got my bindings on: RearDIN11; Front DIN9.5. But just find out yourself.
When you're buying new skis with bindings get the heavier ones. Won't cost you much more. If you have to buy new bindings for the extra din, just see if you have to tighten them further than din 10. If so, only then buy new ones.
But watch out, I fucked up my knee trying to find out the right din settings!
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last year i was riding the pow pow, dropping 25+ cliffs with a din setting of 6. (I weigh 70 kg, 180 tall and boot is 310) That is very little, but i hadnt any problems. Now on my AR5s, i wanted the p10, but the guy in the store told me to go with the p12. The last two numbers of the binding (at the p10: 9/10) are just for being there. The feather doesnt react correctly in such high settings.
Get the better binding, maybe you will need them.
your shop should be able to calculate what din you need for your height and weight and stuff. dont listen to what people here say about this stuff, most of them dont have a clue what theyre talking about. just ask your shop.
^ yea i work at a shop. it's pretty disguting what shops do really. They take (either, not both) you weight or your height, and your boot sole length and find the recommended DIN on the wall. if you are type 2 or 3 skiers, ther'll add 1 or 2 DIN respectively. Just give me your boot sole length and I can check the chart on the wall.
its funny how much we all speak of this DIN, when it really is a word that refers to nothing in this world. ITs an old standard that is no longer applied to binding release settings, just to boot sole standards. Technically, we should all ask for ISO settings or RELEASE SETTINGS.
its safer to be in the middle range of your bindings din. thats what they work best at, less chance of them getting stuck or anything. so if you ski at 10 you shouldn't have p10s. i ski on 5 or 6 and mine go from 3-11.
alright, want me to answer the question? 175 pounds, average size for that height is prolly arould 6 foot, Im guessing hes riding about a 315 sole length boot, puts him at about a 7 retension setting. Now, figure in that the system is kinda old, and newschool skiing puts more forces on the ski, I would guess that he would bump it up to a 9 retension setting.
Now that we know that, ideally, you want to be in the center of the range of the binding. I.E. if you have a binding that goes 3-10, at 6.5 you will get the most consistent releases. So, being that he is running about a 9 for a release setting, he would benifit from this the most from a binding that has a 5-14 release setting range. SO, with that said, do yourself a favor and pick up a set of scratch 140's and jib it up.