give me some help please

[240 rippa]

i own a 95 240 sx. i currently have the 300 zx brake conversion.4 lug.now im shopping for rims and i cant figure out the off set.im curious what anyone else has. i want to run 17x7.5 front(+25 +33+43) 17x8.5 rear (+25 +30 +43). these are the #s.if anyone cn help will help alot.

[C-Kwik]

It can vary by wheel. Spoke designs are different from each wheel and in some cases, the spoke offset may even vary as opposed to wheel offset. You might try and source a wheel for the 300ZX in the style you want and check the offset for the application in the size you want. I don't feel like to doing the math, but most 8 inch wide wheels with a 30 mm negative offset should fit. Some can go down as far as 35 and I can imagine there are even 40 offset wheels that would fit if the spoke design allowed for it. With a 7.5 inch wheel, the offset will not be the same, but just do the math and that should give you a fair idea. Also, if you can, try to keep the offset higher if at all possible as using too little negative offset may make the wheels more prone transmit very small out of balance issues to the steering wheel.