I'm planning on buying 4 x Blizzak LM-22 for my G35 sedan. Can anyone recommend the best size to buy in either 16" or 17"?

 

I'd go to www.tirerack.com and input your car info. It will arrive at the right size for you.

 

I just tried that. TireRack.com doesn't list the Blizzak LM-22 as an available tire for the 2004 G35 Sedan. Does anyone know why this is?

 

Don't know why.
if you go with LM22, either 16" or 18"
if you go with WS50, 17".

 

Pradin- !6" is definitely cheaper. If you want a real good dedicated snow tire and get lots of snow, go with the WS-50. If you get just the odd bit of snow and want a bit more performance tire with not quite as good snow capabilities go with the LM-22. If you have Brembos or big brakes I don't believe 16's will clear the calipers.
I went with 215/60R16 WS-50 on my G35X because I get a lot of snow where I live. I prefer the higher profile tire for the winter and like I said usually it's cheaper. You can run them on steelies or alloys for winter, I prefer the alloys after all the GEE deserves the best.
Wayne

 

I ended up buying a set of Dunlop Winter Sport M3. They're the recommended tires if you live in an area which only occasionly receives a heavy snowfall such as upstate NY.

 

They should work great pradin. Have a nice Christmas and enjoy your ride.
Wayne