My 16" wide experience: I have been running a 137 x 1.6 x 16 Ice Cobra on my 2016 Renegade 800etec with the wide front end with 6.9 skidoo skis. With THIS track the lugs are only 15" wide, and there is a half inch of non-lugged track on both sides. I ride mostly with guys that have stock 146 x 1.75 x 15 Backcountry sleds, often on lakes and roads that have no previous tracks. When ridding side by side on virgin snow lakes, we look at each other, and both sleds sink in about the same, so i believe my 16 track is about the same flotation as the 146 x 1.75 x 15 track they run. In addition, when I'm leading on an untouched road, my wider track, front end and skies, I set a nicer "1st track" for the following guys to widen out from and for all the rest of the group. Also, when stopping in deep snow, I believe I can pull back out about the same as the 146 x 15 guys. Racing wise, I do not believe my track slows me down at all compared to the 850 BCs. Over 9 years of riding, we have always been very close, but I have a Y pipe, timing advanced, and slightly higher gear. I do run equal to quit a few stock 850 BCs, some I can inch out, some can inch me out. Sidehilling wise, the snow has to be really deep and soft for me to rock it up and side hill, but that may be because of the wide front end and wide skis (but then at 65, my riding skill is probably the limiting factor).
I ordered a 2025 BC 850 with the wide front end. I already have a 146 x 1.6 x 16 Ice Cobra in the basement to put on before my first ride, I like this track that much.