I am confused (nothing new huh)
All info i see says my tires should be 225/50 16's

Tires on the car now are 225/60 15's

Looks like original stock wheels to me so will the 16's fit on the same wheel ?
Actually looks okay with the 15's (not alot of extra clearance.

Basically, what size tires am I shopping for.

 

never mind. I found on one site where the 15's were also put on 928's\

 

Already answering your own questions !