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Old 01-05-2015, 02:20 PM   #4 (permalink)
bullitt5897
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Op,

The sizes and offsets are weak for the 370z. You will want to run a 9.5" in the front or a 10" width. The rear minimum should be a 10" but more preferably an 11" wheel.

Here are some sample specs:

Front:
9.5" +15 to +22 offset
10" +22 to +28 offset

Rear:
10" +0 to +15
11" +6 to +21

Of course you can go more aggressive but this should bet you a flush setup. To give you an idea how far you can go... I daily a 20 x 12 +16 offset on a 305/25/20.

As far as fitting your brakes your back spacing will play a major roll. Offset just measures how far out or in the wheel will sit. Backs pacing determines how far the back face of the wheel sits in relation to centerline of the wheel.

I.e.: a driver side front wheel with the following specs: 9.5" +15 offset and a +55 backspacing would mean:
The 9.5" hub face (where wheel mounts to hub) is only 15mm left of centerline (center of wheel). The +55 backspace means the hub face depth is 55mm deep meaning you have just over 2" of space on a flat face wheel from the hub to the back of the wheel face.

I hope this makes sense for the newbies...
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