transamman1

i know quite a bit about cars but ive never figured out rear-end gear ratios
anyone have a link to a website or a quick explanation of how to understand them ?
im trying to find a set of gears that makes my highway rpm low even if i do lose a little power
my car is a daily driver w/ A4, M2 cam, all the bolt ons, and soon to have a PT4000


thanks in advance