Rara,
I put 205-55-16 Blizzack MZ-01's on my stock SVT rims. My fiance has the vehicle in Yellowknife (soon to come south) where there is snow already. I chose these tires based on there exceptional results as a winter tire. The difference in overall diameter is only 0.3". I too didn't want to use 15" rims.
I can't comment on differences of the change or how good the rubber rides because I have yet to drive the car since Steph put on the Blizzaks. She is moving back down in 2 weeks so I will be able to comment then.
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Kristoffer
Silver Frost Metallic
#878 of 2760