18's on a 370z

carlitos_370z · 11-30-2015, 05:33 AM

Quote:

Originally Posted by Memphis370Z

Alright, guys. I've read myself in to a stupor trying to figure out what offsets to get and am asking the group to weigh in with their thoughts. I've read, and read, and read myself in to an offset coma. Please, help a brother out.

I'm looking at 18" SSR GTV02s and I've settled on 9.5" for the front and 10.5" in for the rear. I made notes while reading through this thread, as well as others, and I think I should go with a 35mm offset in the front (22mm is also an option) and a 15mm offset in the rear. I am on Swift springs, with SPL rear camber arms and lock out bolts. I would like to be near flush. No poke at all. Will these offsets get me what I'm looking for?

Also, regarding tires, I'm considering 245/45 in the front and 275/40 in the rear, as these sizes would keep the overall diameter close to stock, as well as the sidewall height. I'd like to go wider, especially in the rear, but then it just starts throwing things out of whack. Thoughts?

All that noted, I really appreciate anyone sharing their advice and feedback. I'd like to go ahead and make my purchase soon.

Well my friend i think the best option is 18x9.5+22 front and 18x10.5+15 rear.. at least i preferred that option. Here is a pic of my Z for reference if you dont see this pic before.

image2 by Carlos Berrios, on Flickr

My wheels are 18x9.5+12 front and 18x10.5+22 rear with a 20mm spacers on the rear soo the offset of the rear wheels now is +2

I have to install the spacers on the rear cause the any shop have the 18x10.5+15 rear wheels on stock

but im happy with the results anyway

Tires are 255/40/18 front & 285/35/18 rear

I hope that help

Quote:

Originally Posted by josemartinrea

And yes I dropped down from 19s to 18s.

Sent from my HTC One_M8 using Tapatalk

Same here! i dropped to 18" wheels!

imjello · 12-23-2015, 11:17 AM

Quote:

Originally Posted by carlitos_370z

My wheels are 18x9.5+12 front and 18x10.5+22 rear with a 20mm spacers on the rear soo the offset of the rear wheels now is +2

I have to install the spacers on the rear cause the any shop have the 18x10.5+15 rear wheels on stock

but im happy with the results anyway

Tires are 255/40/18 front & 285/35/18 rear

I hope that help

Same here! i dropped to 18" wheels!

Carlitos, any rubbing or problems with the front? I just grabbed my 18's and went with 18x9.5 +12 for the front. Im having some issues with rubbing when the road isn't perfect and smooth.

went with 275 in the front which I think may be the whole issue, but would like insight before changing out the tires

Thanks in advance!

imjello · 12-23-2015, 03:35 PM

here is my contribution: 18x9.5 & 18x10.5 Rays Gramlights 57G in bronze

carlitos_370z · 12-28-2015, 06:07 AM

Quote:

Originally Posted by imjello

Carlitos, any rubbing or problems with the front? I just grabbed my 18's and went with 18x9.5 +12 for the front. Im having some issues with rubbing when the road isn't perfect and smooth.

went with 275 in the front which I think may be the whole issue, but would like insight before changing out the tires

Thanks in advance!

Sorry for late response my friend! Well i think your problem is the front tires... with the setup that i have 255/40 works perfect and i dont have any rubbing issue

anyway i think for my next setup i would go with 265 front tires if i found here in PR loool!

Quote:

Originally Posted by imjello

here is my contribution: 18x9.5 & 18x10.5 Rays Gramlights 57G in bronze

( Click to show/hide )

Looks great dude!

Dcocci · 12-28-2015, 10:04 AM

Quote:

Originally Posted by imjello

here is my contribution: 18x9.5 & 18x10.5 Rays Gramlights 57G in bronze

Oh man those look great!

Dcocci · 12-28-2015, 10:08 AM

Quote:

Originally Posted by imjello

Carlitos, any rubbing or problems with the front? I just grabbed my 18's and went with 18x9.5 +12 for the front. Im having some issues with rubbing when the road isn't perfect and smooth.

went with 275 in the front which I think may be the whole issue, but would like insight before changing out the tires

Thanks in advance!

Are you running spacers or anything? You seem to be kinda sorta low but not slammed. 275 is pretty wide on a 9.5 inch wheel anyways so maybe a 265 would help? You could also try running some negative camber too. I barely rub on the street with a 10.5 in +20 wheel with a 285 tire. Now that I rolled the fenders I dont rub at all. Only on a couple corners on the tracks.

imjello · 12-16-2015, 12:39 AM

keepers of the 18" wheels; will 18x9.5 +30 square work on a base Z? I assume the brakes will be fine, but offset maths still confuse me

thanks in advance

TN.Z · 12-16-2015, 11:49 AM

The fronts would extend the face outward 32mm and the rears would retract the face 9mm. You would definitely want spacers I would think for the fears. Fronts should be good maybe a little poke

redline10000 · 01-05-2016, 09:00 PM

I was thinking about using 9.5" rims on all corners but noticed everyone uses 10 or 10.5. Is this for looks or does it have an effect on performance as well? I plan to use 275/35/18 square.

Dcocci · 01-06-2016, 06:11 PM

Quote:

Originally Posted by redline10000

I was thinking about using 9.5" rims on all corners but noticed everyone uses 10 or 10.5. Is this for looks or does it have an effect on performance as well? I plan to use 275/35/18 square.

I chose 10.5 mainly because that's pretty much as wide as you can go for street/track suspension setups (although some guys run 11") , and because I'm running a 285 square tire. It fills up the fenders nicely too once camber is dialed in. From a performance standpoint I think the switch to a square setup will be significant reguardless of wheel width. I track with a very fast Z guy who uses 9.5 square.

skoolio · 02-05-2016, 05:02 PM

18s rock rfp1's

imjello · 02-14-2016, 10:39 AM

Quote:

Originally Posted by skoolio

18s rock rfp1's

Looks really good, what are the tire & rim specs?

abm89 · 05-31-2016, 10:26 AM

Quote:

Originally Posted by skoolio

18s rock rfp1's

( Click to show/hide )

Nice! I got another set...This time in black:

carlitos_370z · 05-31-2016, 12:08 PM

Quote:

Originally Posted by abm89

Nice! I got another set...This time in black:

looks great man! BTW what is your tire setup?

abm89 · 06-01-2016, 04:05 PM

Quote:

Originally Posted by carlitos_370z

looks great man! BTW what is your tire setup?

265/35
275/35

71-R for track. Conti DW for daily set.

12-16-2015, 11:49 AM	#8 (permalink)
TN.Z Base Member Join Date: Mar 2015 Location: Chattanooga TN Posts: 161 Drives: 09 BSM 6sp - 04 DBP Rep Power: 14	18's on a 370z The fronts would extend the face outward 32mm and the rears would retract the face 9mm. You would definitely want spacers I would think for the fears. Fronts should be good maybe a little poke

01-05-2016, 09:00 PM	#9 (permalink)
redline10000 Enthusiast Member Join Date: Nov 2012 Location: boston Posts: 265 Drives: 2011 370z sport Rep Power: 14	I was thinking about using 9.5" rims on all corners but noticed everyone uses 10 or 10.5. Is this for looks or does it have an effect on performance as well? I plan to use 275/35/18 square. carlitos_370z likes this. __________________ AAM Axleback + AAM Midpipe \| K&N Drop in filters \| Eibach Front Sway bar \|Whiteline diff bushing\| Dunlop ZII

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skoolio Base Member Join Date: Feb 2015 Location: California Posts: 4 Drives: 2015 370Z Nismo Rep Power: 12	18s rock rfp1's