Yes, or they think that placing snow tires on the drive wheels only; usually on front wheel drive vehicles. Sounds like you have a handle on things.I haven't heard that...but I have met a few over the years who could very well convince themselves that they only need winter-tire traction in the rear. Ugh.
The Vredestein winter tire specs agree with you; that is, 9.5 is the ideal measured rim width. I'm sure the tire would do well in the range you suggest. However, the Vredestein Wintrac Pro+, which I've mounted stretched in the past on my RS3, M4, M2, and Supra, also state their acceptable range width is 9 to 11". And the min width for 11s is 275.The optimum rim width for a 275/35R19 tire is 9.5 inches, with an acceptable range from 9.0 to 10.0 inches
Sounds like your plan is to dismount summer tires (save for next season) and mount winter tires on your DH HP wheels. If correct, I'd be more concerned about potential wheel damage from a repetitive dismount, mount cycle assuming this is a long term plan.I am looking into a winter wheel/tire set up--e.g., Steeda Tridents 19x10 all around.
However, I happen to have a set of 275/35R19 winters still in excellent condition. As such, I was toying with the idea of trying to fit them on my DH (with the HP wheels: 19x10.5F / 19x11R). I don't do a lot of driving in the winter--mostly errands, but no long hauls and certainly no "sporty" driving.
Not worried about the fronts--I've run that spec before. But, wondering if anyone has any experience with a 275/35 on a 19x11 wheel...