has anyone installed a winter tire with size different with factory

There are a couple threads about this.
I bought 16" aftermarket wheels and winter tires from TireRack.
They are the same height as OEM

 

I installed 205/55R17 Michelin Cross Climate 2 on 17x7.5 inch MSW Type 48 rims from tirerack.com. Resulted in 0.4" loss of ground clearance. No issues other than an occasional rub when leaving drive way in a hurry. At the time I found it very hard to find aftermarket wheels that were factory size i.e. 17x6.5 inch.

 

215/60 R17 on 17x7 inch MSW Type 42

 

205/60 or 215/55 are better matches for original circumference on 17". 205/60 exactly matches the standard 19", and 215/55 is in-between the standard 17" and 19".

205/55 is smaller than standard sizes, 3% below the 19", which is at the edge of recommended changes, and legality in some countries.

215/60 is bigger than standard sizes, 1.8% above the 19". Usually acceptable, but I'd be a bit wary for a winter tyre on this car.

Toyota Finland had been telling dealers to offer 215/50R19 studded winter tyres for 19" cars (3% higher circumference), but I've read that they're now saying that's not acceptable, due to problems with snow build-up and potential well damage, and are specifying and type approving 17" winter sizes. 215/55R17 is the easiest to find, and what I already chose - Nokian Hakkapeliittta 10 on Toyota 17x6.5 rims (not the factory ones, but those offered as an option for 17" cars in Europe)

 

Anyone has a picture with the 16" tires?

 

you can check this winter tires post

Winter tires? | Page 10 | PriusChat

 

Any issues with break calipers clearing if you went down to 17" wheels for winter from stock 19"?

 

The brakes are almost certainly the same, regardless of 17” vs 19” wheel. There have been clearance issues reported with 16” wheels though: clearance was so minimal that hidden weights needed to shifted. I wonder too: maybe a 16” wheel “clears”, but if a small piece of gravel gets kicked in there…

 

215/50/18

Calipers are the same no mater what size wheel came on your Prius. It not like the Prime is a performance variant warranting large brakes or better suspension.

 

I ran 10k miles this winter using 215/60R16 and Blizzak WS90... no clearance issue and they were GREAT in snow storms and snow < 6" deep...