2012 PIP Spare tire

I'm pretty sure only the Prius v uses the 5x114.3 bolt pattern. Also, a 135/70/17 would have a larger rolling diameter than the 195/65/15 found on the Prius hatchback/PiP.

 

How about genII prius donuts? Are they compatible with '12 PH?

MB860 ?

 

It will mount, but its a smaller wheel/tire combo. It looks like it is a 125/70/16. Here are the various rolling diameters I calculated:

02-05 WRX spare : 1870mm
10-12 Prius spare : 1954mm
04-09 Prius spare : 1834mm
10-12 Prius full size : 1992mm

I'm not sure how a smaller wheel/spare on one of the Prius drive (front) wheels would work. On a car equipped with a limited slip diff, you'd want both sides as close as possible in rolling diameter. I don't know how the Prius transmission stuff works so I can't say. It may also affect the ABS adversely as well.

 

Funny, I've actually owned 3 of the 4 you listed ('02 WRX, '08 Prius, '12 Prius). Thanks for the info... this is good to know in case I get the idea of using the '08 donut on the '12.

The difference is about 16 cm or ~ 6 inches per rev ... The Prius doesn't have LSD but this would probably mess up traction control on the front wheels. May be okay on the rear wheels for low speeds.