2007 Yaris Tires

[Roar]

I am almost afraid to ask, because the answer is probably somewhere, but I searched and searched, so do not get mad.

The 2007 Yaris, not getting fancy, can use

P185/60R/15 84T
or
P175/65R/14 80S

Why would I choose one over the others?

Thank you.

[MUSKOKA800]

Because only one of those sizes with fit the wheels on your Yaris.
FYI: the /14 or /15 portion of the size represents the rim diameter in inches.
Base model Yaris often came equipped with 14" wheels while upgraded Yaris might have been delivered with the 15" wheels.