[-Alero-]

i have a question and its bugging the hell out of me.

on a stock alero it can come in either 15's or 16's......my question is why are the tires 215/60/15 and 215/50/16

wouldnt that mean if your car came with the stock 15's and yo uchose 17's yo uwould have to use 50 series tires?

and if yoru car came stock with 16's and you chose 17's that would mean you would move to 45 series tires.

wtf is up with this. have i been running the wrong size tire all along? ( 225/45/17) mine came with 15's.

my geo has 175/65/14. that would mean if i had 17's on it i would have to have 50 series tires on it.

someone wanna explain this to me?