Forums/Z31P/z31-performance-upgrade-forums suspension-chassis-and-brakes/Clearance on 18x9.0 + 18 Rims with 255/35/R18 Tires without spacers?
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baseball: (2013-11-25 20:29:10)
1987 300ZX Turbo.
I'd like to know if 18x9.0 + 18 Rims with 255/35/R18 tires
will clear without using spacers. I know rims are good
at +18 offset, but wasn't sure about the tires, otherwise I
can jump down to 225/40/R18's.
I'd like to get some additional input before I pull trigger
on tires.
Note for all wheels and suspension is stock, but new.
Thanks.
510_Z31: (2013-11-26 00:07:18)
Is this front or rear?? The rears might be a little sucken in because of the wider flare of the kouki body. For the front it should clear if your on springs. If its on coilovers then it might be a different story
baseball: (2013-11-26 00:30:36)
Front and Rear, stock suspension, but new.
baseball: (2013-11-26 00:31:19)
Stock Suspension (New) and both front and rear.
adamvann3: (2013-11-26 03:51:03)
Rears will clear no problem.
As for the fronts, you should be fine. If anything you may need 5mm to clear the strut tubes. No big deal.
Order 255 tires. You will be pissed if you order 225's
baseball: (2013-11-26 04:27:18)
If I need 5mm spacers - would these work?
http://www.ebay.com/itm/5mm-Hubcentr…420bce&vxp=mtr
matt85turbo: (2013-11-26 05:27:29)
Why would you replace your suspension with stock parts
baseball: (2013-11-26 14:34:05)
Finally, the master speaks!
Thank you - I appreciate it.
baseball: (2013-11-26 14:35:17)
Stock, from the sense that the car is not lowered.
Spooledup300z: (2013-11-27 13:24:45)
http://www.summitracing.com/parts/php-01201 your new best friend when it comes to wheel fitment, will save a lot of money and takes the guess work out of it
baseball: (2013-11-27 13:38:41)
Adam, Kouki's is a 240SX? - are you suggesting an 87 300ZX with a stock
suspension in the front is the same?
adamvann3: (2013-11-27 16:24:52)
Kouki's are 87-89 300zx
Zenki - Japanese term for early
Kouki - Japanese term for late
Nissan had different variation of front suspension parts over the years. The kouki spindle castings were slightly different with approximately 10 more mm of spacing. It is really evident when you place a zenk and kouki casting next to each other. There is more room between the strut tube and brake mounting points. There may be some difference in some geometry as well (slightly more static camber) but I never really measured that.
What I was trying to merely point out is I had 9" wide wheels +15 on zenki spindle in which they rubbed.
You have 9" wheel at +18 on kouki spindles. Which gives you approximately +10 mm of clearance (-3mm because of the additional offset)
But if you factor in I was running a 16" wheel, in which the wheel lip has a smaller diameter, where you have a 18" wheel lip.... The farther up the strut tube you go, the more clearance between hub face and strut tube.
I am not trying to space shuttle this, I am just saying you may be close. So verify everything spindle freely and has enough clearance before taking it out for a spin. I would hate for you to rub the inside of your new wheels or tires.
baseball: (2013-11-27 17:02:08)
Thanks for explanation, I was unfamiliar with the term Kouki and when I researched the web, it refers to the 240SX, so I was thinking maybe you had parts on your Z from a 240SX or perhaps were talking about a 240SX. I'm going to have the tires mounted at a shop here locally, and would hate to have them mount them, put them on and find out if they don't clear, so I was hoping for a definitive answer, which I thought I did when AZ-Bum's post appeared, but
then you should up and have me second guessing again - LOL. Perhaps, AZ_Bum will appear again and put us both out of our uncertainty [archived image: smile.png]
baseball: (2013-11-27 20:07:43)
I've decided to downgrade from the Dunlop Direzza ZII 255/35/R18 tire to the Michelin Pilot Super Sport 255/35/R18.
One additional option I have with the Michelin that I didn't have with the Dunlop's is the option of 245/35/r18's..........
What to do, what to do.
G-E: (2013-11-28 01:47:13)
All the best tires are within split hairs of each other, you can't go wrong, if you have trouble choosing, make a list of the most important attributes to _you_ and rank them accordingly, tire wear, wet traction etc
baseball: (2013-11-28 05:39:31)
The benefit of the Michelin Pilot Super Sport is that they are better suited for what I will be driving the car on - mostly street and perhaps on the track next summer. If the 255/35's don't fit without a spacer, then at least
I have the option of the 245/35's in this style.
frostvectron: (2013-11-28 19:34:59)
If you have to use a spacer, it isn't going to be because of the TIRES, but rather the WHEELS which are already bought. Buy away. If it doesn't fit, make it fit.... you are overthinking this big time.
Test fit just the wheels and see how much space there is between the strut body and the wheel itself. As long as you aren't getting tires that bulge past the wheel, they won't make fitment worse on that side. They will make the fender-to-tire distance shorter, but you are on stock suspension and your wheels aren't crazy low offset, so I doubt that will be an issue.
[archived image: 100_1924_1600x1200.jpg]
16x8.5 +11 with 245/45/16. I'm on Powertrix coilovers, kouki spindles, and G-E's offset bumpsteer spacer.
Note that the closest point to the coilover body is the wheel inner edge.
IMO, do at least a 245 width on the 9" wheels. But compound matters a lot for grip too. A 235 Direzza ZII tire will stick a lot more than a 255 in some other junk. Using Direzza's for street driving seems a little wasteful though because it is an expensive/soft tire.
baseball: (2013-11-29 15:50:26)
I've decided to downgrade from the Dunlop Direzza ZII 255/35/R18 tire to the Michelin Pilot Super Sport 255/35/R18. They will last longer, by the way these are available in 245/35R18 what do u think?
adamvann3: (2013-11-29 17:16:51)
I think you should stop asking so many questions and just buy everything and fit it up.
I also think you should get some better springs than OEM. Eibach will "lower" your car, but sagging OEM springs vs brand new Eibach's are not going to be that different in the static department.
Dynamically they put the OEMs to shame, and to me what they should have been from factory and will match week with your tokico dampers.
If you haven't done so already:
Poly rear x-member bushings
Poly transmission bushing
Poly rear differential busing
And I would get some front camber plates. Z31s need much more static camber being macpherson that what stock comes with.
baseball: (2013-11-29 20:23:15)
I have a set of springs installed that were made for Dan Blaske of TSS which are suppose to be stiffer than the 88's - which I also have, sitting in a box with less than 500 miles on them.
G-E: (2013-12-03 04:08:05)
They only need significant extra static camber in the sense that it affects turning camber (what you want more of), using camber plates oriented axially to become caster plates would allow more turning camber without adding static camber
Alternately, my roll center adjusters add to both static and turning camber
Greasedmonkey: (2013-12-10 05:51:37)
What lip is that?
DavidA: (2014-01-23 21:24:09)
I didn't want to start a new thread and i didn't want to bring one up but I have a similar question and i'm losing sleep over it. I'm in the market for new wheels and tires. Black RPF1 18*9.5 et 15 caught my eye with 275/35 -ish tires. I don't want spacers/adapters, I want them the same size all around front and back and they can't stick out (europe). I have stance coilovers. Will they fit? After doing some research and punching in different combos, I can't get a straight answer. I will ship this set to Poland, hence the importance of getting the right size without test fitting. Racin jitter had battles this same size, shamwow also but with spacers. Who should i contact?
lol- car is 88 2+2 turbo
G-E: (2014-01-23 22:18:09)
Don't get rpf1's they don't look so good on the z31… rp03, pf01, kojin, etc… lots of nicer ones available
DavidA: (2014-01-23 22:37:04)
I do agree that rpf1s aren't ideal but they weigh a lot less than other wheels and are legit. I still want to do the 186 mph run, possibly this year, I graduated last year and saving up monies;] Fitment is my biggest concern, I am still checking out different styles, but style is not on top of my list, I'm more of a function>form guy.
adamvann3: (2014-01-23 23:48:41)
18x9.5 et 15 will rub the front coilover. Stuffing a 275/35 in their is also a lot to be asking.
You can run 18x9.5 et 15 with spacers no problem. Some camber (which you should already be running) and rolled fenders you can fit 275/35s. Its your decision I wanting to run spacers/adapters, but you will be hard pressed finding an off the shelf wheel aggressive enough without ordering something special.
GE,
RPF1s look good on everything. Especially in SBC finish. I just picked up a set of 17x9.5 and 10.5 to either run on any of my vehicles. Hard to beat the performance, price and looks.
DavidA: (2014-01-24 01:45:59)
i'm looking at 1" spacers aren't I?
G-E: (2014-02-01 21:21:11)
My only complaint with enkei's lineup, is it's not easy to make the same set between models, ie. keeping same offsets and widths for a staggered setup
I really wanted the pf01, but I chose kojin for it's more subdued look
adamvann3: (2014-02-02 01:38:18)
I would have liked a set of the new RS05RR's. I priced them out, somewhere enkei decided to price their new MAT type wheels in the same category as Volks.........
[archived image: Enkei_RS05RR_Wheel_Japan_Concave_31.jpg]
quicksilverz31: (2014-02-13 21:01:16)
No, more like a 15mm spacer or 17mm if you want to be just a tad more aggressive. 1" would be too much though to fit 275/35's. I was looking to run a similar setup.