TwinTurbo.NET: Nissan 300ZX forum - Offset Math 101: fronts should be fine.
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Subject Offset Math 101: fronts should be fine.
     
Posted by CHUNG (Dallas) on February 10, 2006 at 4:32 AM
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In Reply To Will these fit? posted by Sam(Houston) on February 09, 2006 at 09:55 PM
     
Message Depends on the spoke design.
Assuming this spoke is flat like the stock, stock front is 16x7.5"+45mm and the new front is 18x8"+38mm:

1) 38 - 45 = |-7| = 7mm,
the new wheel sticks out 8mm more, which in terms you have 8mm more clearance.

2) 8"- 7.5" = 0.5" = 12.7mm
12.7 / 2 = 6.35mm,
The new wheel is 6.35mm wider on inner and outter side.

3) 7 + 6.35 = 13.35mm
The new wheel has 13.35mm more clearance and sits 13.35mm furthur out.

Simple?

Erick
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