What is my stock offset, center bore, and bolt pattern?
Stock offset, bore, and bolt pattern are +20 mm, 74.1 mm, and 5 x 120 mm. The bore and bolt pattern of your new rims must match the stock specifications in order for your rims to mount on the hub correctly. The offset can be variable over a reasonable range. Offset describes how far the hub mounting surface lies from the centerline of the rim. A more positive offset pushes the wheel farther towards the outside of the car. A more negative offset pushes the wheel closer towards the middle of the car. The offset can be varied as the rim width changes to ensure that wheels will clear suspension components on the inside and not rub the fender on the outside. For a diagram and a more detailed discussion on offset visit this site http://home1.gte.net/macross/offsetFAQ.html. It is Eclipse related but informational nonetheless.
