Originally Posted by
Reelax
offset is simple. for a given width (in your case 8"), the lower the offset, the more the wheels are pushed out away from the car's lengthwise centerline; the higher the offset the more the wheels are pushed in closer to the car's centerline. stock offset for our cars is +46mm. the reason you will need a lower offset than stock to clear the EVO BREMBO's is because you need much more room behind the spokes of the wheel. as a rule of thumb, depending on spoke profile design, wheels with a lower offset will offer more room behind the spokes because the wheels are pushed out further from the car.
now here's where it gets mildly less simple. a more narrow wheel can have a lower offset and still stick out EXACTLY the same as a wider wheel with a high offset (and a wider wheel w/ a higher offset might stick out the same as well). the point is offset and width have to be taken into consideration TOGETHER to determine final fitament for clearance to fender and suspension.
example:
8" +35mm
would stick out exactly as much as
7.5" +29mm
would stick out exaclty as much as
8.5" +41mm
but not all of these sizes are guranteed to fit the EVO BREMBO's. that is more a function of the spoke design. to fit brakes that big, the less lip you have AND the lower offset you have, the better chances you have of fitting those big front calipers (ther rear calipers are muich smaller so the front really dictates how much room you need).