Yup, C Springs is somewhat famous for a foot of snow falling that is completely melted off in 3 days when the daytime highs hit 55-60 and the sun is out in force. Huge swings in temperature and conditions. (My then-GF, now-wife lived off Woodmen before it was extended so far out— I was stuck in the dorms at USAFA while she was teaching in District 20).Every September, we have this conversation on the neighborhood Facebook page: "I just moved to CO (my neighborhood is packed with active duty folks, so lots of transitioning in and out) and wondering do I need snow tires?"
First to jump: "If you don't drive a lot, you don't need it." Or: "just stay home when it snows," (because you know, life never happens).
Of course, winter comes, weather is unpredictable. We have a saying here: "if you don't like the weather, just wait 5 minutes, it will change." So, the weatherman says 2" of snow, we get 20". Or they say 20" and we don't get anything. So, there goes the assumption of how one can stay home, bcs. I lived through 80 degrees temperature drops within 2hrs, and snow storms that started as bit of clouds when I was getting into Costco and an absolute horror show on the roads when I got out of Costco. So, assuming that it won't snow, or freezing rain etc. is not the best strategy, it is just wishful thinking. Then on the same Facebook page: "I don;t know what these people think, but if you don't know how to drive, don't go out" etc, etc.
So, how do you measure whether they are worth it or not? Few days ago, lady in Subaru Ascent in front of me, hit the curb with rear right wheel, started to spin, I slammed on brakes, hard-packed slick snow, and stopped maybe 4ft before hitting Subaru. Any other tire but snow tire would not stop, and I was not sure even these would (Blizzak WS90) in time. But those 4ft is what I paid extra money for extra set of tires. They paid off right there that day, although I owned them 3yrs. And here we talk only about material damage.
As a tire nerd with who moved around a ton of times (thanks USAF), I would suggest 1) a front wheel drive or AWD vehicle with 2) tall and narrow high-profile tires on 3) smaller diameter wheels. A tire needs to have a lot of siping to hold snow in the tread.
The key is higher ground contact pressure. You want to concentrate the vehicle’s weight on a small contact patch if possible.
This is also why the common advice given out by tire shops and “experts” to always have the best traction tires on the rear is precisely backwards. They want your best tires on the rear for one reason only: liability. They want you to understeer instead of oversteer because they think it’s safer. But it’s not safer to have less overall traction.
Your front tires do the vast majority of braking (due to weight transfer and general weight imbalance), they do all of the steeering, and in a FWD they do all of the acceleration. In what world does it make sense to use lesser tires on the end of the vehicle doing the majority of the work? Your fronts do the majority of the work and provide the most critical traction for stopping and steering, which is critical in bad weather (much more than accelerating traction).
The proof of this is of course that the front tires on FWD and many AWD wear disproportionally fast. Heck, it’s often the case with rwd trucks too that the front wear much faster (very little weight on the rears of a rwd truck not used for actually towing or hauling, which is most trucks).
If the tire shop refuses to put better tires on the front, do it yourself when you get home. They are doing right by themselves and their insurance requirements, NOT by you.