A dumb question. But I can’t help it. I’m at a loss as to the why?
I’m talking about the east coast. We rarely have true powder. What we often have that pass as powder are mostly “chowder”, fresh snow so dense the ski don’t sink down much anyway (at least not for me).
So apart from the “float” which I don’t really have much need for, what’s the benefit of wide skis?
(I’m talking about skis wider than 75-80mm)
I will certainly agree that shape and all the other differences in skis can make a huge difference. but width is a major player too. Skier weight drives width if you want float.(I am a 240lb guy) Once you get enough float, then you don't need to keep going wider. I have a quiver with a full range of widths. My narrow skis are stiffer than my wider skis in general. On hard snow I ski a narrow ski. On soft packed snow I can ski any ski. On soft untracked snow, a wider ski is much easier to ski. I am an expert and I can ski any ski in any conditions, but its what I enjoy most that matters to me and I enjoy the ski doing the work, not me. I always do plenty of work, so the more the ski can do the happier I am.
The best way I can explain it is to describe this past weekend at Sunday River in ME. It was soft spring mashed potatoes mostly, a little frozen in the morning. On my 88mm stiff all mtn ski(Salomon X-Drive), I was stable but cutting into the snow and cleaving it away in turns. My feet keep dropping out from underneath me in a turn and I had to be very much on top of that. I tried a softer 93mm all mtn ski (Nordica Enforcer, not Navigator) and it didn't cleave the snow. It was sinking into the snow and on every carved turn I could feel the snow resisting the ski. It felt like I had constant pressure on the side of the ski. This was very noticeable to my legs. I then got on my 108mm Blizzard Zero G skis (these are light AT skis). These have the same shape as a Blizzard Cochise ski. Magic!!! I stayed on top of the snow. No more side pressure on the ski. I could relax and just stand on the ski and turn whenever I felt like it. They rode up and over all clumps of snow very stable, and I could also throw my tails out anytime I wanted to scrub speed and didn't feel like carving a turn. I found my new spring ski this past weekend.
Now it could be argued all three skis were very different, which is true. Maybe it wasn't just the width of the skis, but I was happy and that's as far as I will analyze it. I have skied my Zero G in lots of conditions, and I like it on hard pack as well, but on hard pack I don't like the width and much prefer a narrower ski (65-78mm). The right tool for the job (and the skiers weight,)
And BTW, one of my ski group was on a Stockli WRT ski, which I think was 67mm under foot. He was carving small radius turns the whole time, but was having a great day as well. He wasn't going straight very often or relaxing on his skis. To each his own and we all have different tastes.
Another point on the weight factor, I traded skis with someone my size, that is how I was on the Nordica Enforcer 93's. He wouldn't give my Blizzard Zero G's back, he liked them that much in that day's conditions, compared to his "narrow skis". He plans to buy a pair.