and because I'm Canadian...sorry!

I searched and looked at multiple tire threads and have not seen this question answered.

I've never has winters before...on the truck I just got winter grade tires for the whole year.

I'm thinking another set of steals to make easy switches.

What I'm wondering is if it's worth buying 16 inch winters when the summers are 15 inchers? Is there any advantage? Will it affect the car by switching back and forth from 15's to 16's each season?

Also - any recommendations for mostly a slushy road condition with maybe a few weeks of snow covered driving.

Thanks in advance....