Aftermarket 18's Help PLease

nogoodname

stock sizes are
fronts 18 x 8.0 with 225/50R18
rears 18 x 9.0 with 245/45R18


can't find the offsets

Mike

Page 9-8 of the owners manual
18x8 +43
18x9 +15

19x9 +47
19x10 +30

We know rear spacers of 20 will work and 15 on fronts on the 19s, so you could go with offsets as much as
19x9 +32
19x10 +10

Maybe even a little more aggressive than that if you wanted, but those are definitely proven safe.

Translating that to the 18s,
you could go with a range of
18x8 +19 through +43
and 18x9 from -3 through +15
these offsets keep them anywhere from stock, to sitting just inside the fender.

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NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968

NXTAZEE

Question, if I want to purchase some winter rims of 18" but want to keep the width down to say 215 or 225 at the most, would the same offsets apply but with a narrower rim?

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2010 Carbon Silver 370Z 7AT charcoal int. sports package | Clear Bra | Invidia Gemini CBE | CF B-Pillars | CF Fangs | CF Z emblems | Swift Springs | 20mm & 25mm Spacers | SPC Camber Arms | Brushed Aluminum shift knob

Mike

It wouldn't hurt, at most they would stick in a little farther. Best bet is to play with an offset calculator, like this one and see.
Wheel Offset Calculator

__________________
NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968