Winter Tire Sizes - Stock 18s
 

I am going to be putting winter tires on my stock 18s.

I have been reading around on different tire sizes that will fit but I just want to be sure before I buy them. I am going to get the Nokian Hakkapeliita Rs and these are all the sizes available in an 18:

225/45R18 95 R XL
225/40R18 92 R XL
235/50R18 101 R XL
235/40R18 95 R XL
245/50R18 104 R XL
245/50R18 100 R Run Flat
245/45R18 100 R XL
245/45R18 100 R XL Flat Run
245/40R18 97 R XL
255/45R18 103 R XL

I was thinking about going slightly wider than stock;

Front - 235/50R18
Rear - 255/45R18

Would this work on the base wheels?

225 50 18

snow tires work better when they are narrow