18's on a 370z

Buzzkill247 · 02-13-2018, 06:05 PM

Quote:

Originally Posted by SoCalZ34

Im thinking about getting the Enkei GTC01RR or RS05RR in these specs

F: 18x9.5 +22
R: 18x10.5 +15

As for the tires, Im looking at two different options and would like some input as to which tire size would work best. I plan on dropping the car on HKS Coils (already ordered) The tire specs I have in mind are

275/40/18
305/35/18
OR
285/35/18
295/35/18

And now for some maths...
IIRC, stock diameter is F26.9 R26.7

Where desired tire size = (Diameter) x (tread width) R ) (rim size)
For 26" range diameter:
275/40R18 = 26.7x10.8R18
295/35R18 = 26.1x11.6R18
305/35R18 = 26.4x12R18

For 27"range diameter:
275/45R18 = 27.7x10.8R18
285/40R18 = 27x11.2R18
295/40R18 = 27.3x11.6R18
305/40R18 = 27.6X12R18

no matter how you look at it, those 10.5 rims are gonna be more bubbalicious than J-Lo with 305 on them. Good for straight I would think, but would also think gonna have a sloppy handling feel in corners and potential of roll n pop bead

If you are going to lower it too, you could end up with clearance issues as well on your diameter size once lowered

my .02

P.S. this site is great! https://tiresize.com/calculator/

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