On my summer tires, I frequently drive in excess of 110 mph on my way home from work. (5 am, major highway) Will this be dangerous with snow tires?

 

The Owner's Manaul which "Don’t go faster than 120 km/h (75 mph).", but I think an important deciding factor is the speed rating of your snow tires.

Watch out for black ice and all the other winter hazards including people without snow tires .

 

My LM25 are rated "V", which means 240 kmh is guaranteed (that's approx. 145 mph). On a dry road, good weather, no traffic it's only the tire rating that limits you.

Check the speed tag on your tires to find out about the maximum speed they're built for.