Originally Posted by
SnowMachine
Yeah.... Refreeze slush can create traction because on texture. Black ice, yes... bad. I feel like my current house has made me something of an expert on snow types. My driveway is 1/4 mile of 12% with a 90 degree turn at the bottom. The worst condition is sheet ice and then warm temps or rain. Cold ice is not big deal. When I scrape my driveway with a blade, then it warms up it is frightening (but you have to do it).
I sell tires and mount them in my shop at the top of the drive. I've gotten to experiment with everything including comparing studs back to back with MT's. The huge test is whether or not I can come to a complete stop on the driveway to throw sand. The Jeep on MT's pretty consistently is able. Part of it is lockers and low range. Lock both axles at the top of the driveway and go to low range and it can crawl down almost anything. Sometimes ABS is your worst nightmare. If it can't find traction it can get overwhelmed and just unlock everything. Snow tires can pretty consistently stop except when slush completely fills the tread and ABS loses its mind. Condition of tires is huge, too, obviously.
I'm reasonably convinced that outside hard sheet ice, there is almost no use case for studs anymore. The new snow compounds are so good. My experience is backed up by my Tire Rack rep who has confirmed that they are effectively phasing studs out (he is in Indianna).
Anyway, arguing about tires is fun because it is so dependent on snow types/conditions, vehicle and driver ability. There aren't a lot of absolutes except that the people that should be on snow tires usually aren't.
I will absolutely, without doubt, tell you that a Pirelli Scorpion AS is undoubtedly THE worst SUV tire in snow/ice and they come on far too many high end German SUV's. I can't tell you how many I see on cars in town. It scares me knowing that I share the road with those people. :cussing:
Anyway.... I'm probably arguing just to argue on the internet. I definitely screen customers about their tires before I will bring cars up to my shop. I won't touch a car with AS tires unless I can see blacktop.