205/55r16 and 195/65r15 toyota matrix

Question

I have summer tires with 16" mags on a toyota matrix. I need winter tires with rims so my friend is selling me his 195/65r15 rims and winter tires.

Will they f**t on my car?

Will it be dangerous or unsafe for the car?

Thanks,

Answer 1

How many friends do you have with extra winter tires hanging around?

Yes, P195/65R15 89Q or 195/65R15 91Q winter tires will be interchangable completely with your current P205/55R16 89T tires - so long as you have 15-inch wheels to put them on.  OD and load index are the same.  

Answer 2

It will throw off you speed and set of the check engine light but the biggest thing that you need to do is try them on first to make sure that they clear the brake calipers as well as the brake drums.