Quote:
Originally Posted by CanSpice
Not quite sure what you're talking about because snow tires aren't really a thing any more. There are winter tires, all-weather tires, and all-season tires. TransLink uses all-season tires, and they don't switch because, despite what you think, they cost too much to purchase, store, and switch.
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Yep, which is what I said. That buses would use winter tires, not snow tires... if they were to switch them out.
In any case, it really depends on the rubber in the tires. Winter tires are designed to be best performant in winter weather... that doesn't always mean snow, but it does mean lower temperatures (< 10ºC usually). All-seasons rated for M+S mean they're legally allowed to be used in the winter on some routes (up to Whistler, for example). Most people in Vancouver have these kinds of tires anyhow.
For the record, I don't think they should change to Winter tires for buses either ( apart from designating a few buses up hilly routes, which I think should get more winter-y tires up hills )
The point I was making is that
Winter tires are better in heavy Winter rains as well. It's more to do with the temperature rating. All-seasons aren't as soft at lower temperatures, so they lose traction ( even on cold wet roads ).
There are true studded snow tires, but they're not useful around here.
From a private citizen's POV, The TRUE cost of Winter tires are buying an extra set of RIMs and storing them. They're balanced on the RIM, so don't need rebalancing when installed. Since you don't use your all-seasons when your winter tires are in use, they get more life out of them.
For buses, it's mainly about where to stockpile them, when to switch over ( based on temperature, not weather ) and the time to switch the winter RIMs over. For the most part in Vancouver, a good lower-temperature All-Season is sufficient, although they will tend not to last as long in the summer.