I just lowered my 2010 Prius and the wheels looks more sunken in now than before. I read a couple of threads that used a 22mm spacer in the rear. However I remember reading another thread that someone used 25mm spacers. I stock 2010 wheels. What thickness are most of you using on the front and rear for stock wheels?
I had the same problem with the sunk look. My car is moderately lowered (NF Tanabe springs), on 18" wheels, 48 offset and running 25mm spacers on the rears and 15mm on the front. I like the athletic look they provide but beware of occasional rubbing in the rear.
22mm spacers (rear) will be perfect for stock 15 inch wheels. I didnt need to go with spacers on front