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re: Weirdest snow storm prep you’ve done?
Posted on 1/20/25 at 8:26 am to Lonnie Utah
Posted on 1/20/25 at 8:26 am to Lonnie Utah
quote:
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Posted on 1/20/25 at 7:42 am to TT
quote:
The flatter the tire, the worse you’re off. You want less surface on the snow, not more. Skinnier the tire, easier you maneuver
Yeah, having lived in snow country most of my adult life, you sir are, frankly, full of it.
See, the problem in snow isn't starting to move, it's slowing down and stopping. These two things are best accomplished by have maximum surface area in contact with the snow/road.
Scientifically speaking, the equation is this: d = (v²)/(2µg) where d: is the stopping distance
v: is the initial velocity of the car
µ: is the coefficient of friction between the tire and road surface
g: is the acceleration due to gravity.
Since yoy can't change anything in the equation but V, you want µ to be as large as possible. This is best accomplished with a wide tire.
I must agree with you on this one. Been living in snowy areas (MO, AR, OH) for the past 20 years and always air my tires down when snow is predicted. Was taught this by lifelong northerners and its been very helpful. Had 12 inches a few weeks ago and I did just fine with about 20-22 lbs in the tires (Mazda CX-9). Drove from Columbus to Cincinnati last night in snow squalls and about 1 inch on the interstate and didn't lose traction at all. Only issue is seeing that damn annoying low pressure light on my dash.
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Posted on 1/20/25 at 8:27 am to Lonnie Utah
quote:
Which leads me to my next point: sipes. Sipes are the small slits cut into tire treads. What do they do? Increase the surface area of a tire's contact patch.
Increasing sipes actually does just the opposite, it decreases the contact patch. What they do is increase the number of biting edges which don't do much in snow but provide a significant increase in traction on ice. One thing to remember about this discussion is it is more or less theoretical in that the differences especially brought about by simple tire pressure adjustments (unless you drop them to sub 10psi) are not going to make any significant differences. The biggest differences will be seen in the quality of the tire which is true from winter tires to ultra high performance summer tires and why I preach not buying cheap tires when someone mentions considering the new batches of Chinese tires that have hit the market in recent years.
quote:
If this is true, why do my snow tires (yes I own two sets of tires for our subaru) have a wider profile than the touring tires I run on it in the summer?
Because whoever made that decision is going against the tire testing done by manufacturers and third parties. I should be clear that there are some situations where wider winter tires do fair marginally better than thinner ones but on the whole equal quality more narrow tires win out in every objective test I have seen.
The differences will be very small but lowering tire pressure in an all season tire is more likely to reduce performance in snow that increase it. It is not an opinion it has been proven in testing over and over but the margins are small and more narrow tires don't have an advantage in every situation just more of them.
Posted on 1/20/25 at 9:03 am to aTmTexas Dillo
quote:
I don't do anything to prepare for a snow storm. And I suspect people in Colorado or Wisconsin or Montana don't either.
Yup. I’ve had many laughs reading this thread. Six inches of snow is a light dusting. Up to a foot of snow is a heavy dusting.
When we have a forecast of 6 or more inches I toss chains in my truck and drive around looking for people to pull out of ditches.
Yesterday it was -2 with -20 windchills. My 9 year old daughter and I went ice fishing without an ice shack and on our way home we stopped for ice cream.
Posted on 1/20/25 at 9:42 am to Obtuse1
quote:
Increasing sipes actually does just the opposite, it decreases the contact patch. What they do is increase the number of biting edges which don't do much in snow but provide a significant increase in traction on ice.
Dude, you just described an increased contact patch or the surface area of the tire contacting snow. Except in this case, the contact patch is not just increased horizontally, it's increased vertically into the tire tread via the sipes.
This post was edited on 1/20/25 at 9:53 am
Posted on 1/20/25 at 10:51 am to Loup
quote:
did the same. Once the temps drop below freezing I put a stick in the turd so once it's frozen solid I just pick the stick up and chunk the turd into the woods.
Damn and I thought i was genius for using a seed spreader to broadcast rock salt. Unfortunately the dog turds here are already frozen but by God I'm gonna remember this and be chunking stick turds into the woods one day.
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