Yeah it depends the tires will be fine going 15 km at low pressure. They won't build enough heat to fail. Just be nice and spongey. But its the drivers call when they want to air down. Guys can air down while others chain up.
should be an interesting run.
A couple co-workers are on their way out to Edson right now and say the road is absolutely f'd.
Cant fit chains with the 255/85's and I seem to get some WICKED wheel hop in deep snow... I cant wait