JohnKoaWood

You are going to end up 10mm wider than I am running on street, I am running 245-35-18 on a 18x9 rim, 55 offset, -1.75 camber and am JUST kissing the fender liners durring spring compression with the car lowered 2 inches.

I have 285-30-18s out back and had to clearance the inner fender well, and will be rolling the lips both front and rear to elliminate the occasional lip to tire kiss durring street driving.

but I am alos running what is approaching a track setup, sans sky high spring rates... this winter will bring 350 fronts, and 600 rears t-bar delete, ploly bronze and ER monos in the rear, I already have ER monos in the front, GC camber plates and turbo cup replica strut tower bar..

And yes I have fully resealed my power steering and it now has no leaks and great feedback...

why do you feel you need custom made rims 9.5 wide for the 255s? or are you doing the custom rims for offset advantages?

use http://www.wheelsmaster.com/rt_specs.jsp for more info, or calculations for tire / rim combinations and offset...

lowside67

These are 18x10 CCWs with 285-30-18 A6s on stock, unrolled fenders with -3 camber in the front, easily possible. 255s on 18x9.5 = why even bother, not big enough for any real upgrade - may as well stick with stock, known wheel sizes.

JohnKoaWood

I would be clear of my front fenders IF I dialed in more neg camber, but I dislike the look on street cars, so I am trying to get my wheels as close to neutral AND clear the fenders... -1.5 is hardly noticable but clears the fender itself...

I agree but didn't want to flame him for buying custom made rims... 255 easily fit on 9 inch wide rims... or can bump onto 10 inch rims without looking stretched too bad...

Fast4525

JohnKoaWood and lowside67

Your specification feedback is much appreciated!

I have my own reasons for wanting 255/35-18 front tires and IMO a 9.5" wheel will be the best fit. I know I can fit a 255 on a 9" or step up to a 10" for a 265+ but 255 or 9.5" is where I want to be

What brand/model of tire do you have? Do you have 951S M030 front suspension?

My plan was to use 18x9.5" +54mm which would mean I have 5mm less rim/tire to strut clearance than your set up has.

JohnKoaWood

standard 87 951 spindles and control arms, M474 strut bodies with hacksaw inserts, 300lb springs with paragons adjustable ride height kit, elephant racing bushings, GC camber plates, turbo cup strut bar, I still need the geometry correcting kit / bump steer kit to compensate for the ride height. pic was before I dropped the front another 1/2 inch or so.. car sits level right now at approx 5-6 inches off the pavement!



BFG G-force KDW2s, 245-35-18 fronts and 285-30-18 rears, excelent wet weather traction, neutral feel, solid on road handling... I like the tires but they can be a little loud... but the tread patern looks cool.... I have not taken them on track YET...

Fast4525

Would these give similar tire to suspension clearance compared to what the original Turbo S M030 front strut/spring has?

Who sells this stuff? My car is low and I would like to correct the geometry.

Good to know. Cheers

JohnKoaWood

I believe the clearance should be about the same... you can use the calculator to see how different rim and tire combos will look in profile, and measure on your car to see what will work there... I can take some pics of my setup and send them once I get home this evening...

Geometry correcting ball joint kits.. larger, stronger pin, and almost 2x as long as the origional..
http://www.rennbay.com/track-kit-wit...pins-p-97.html

adjustable bump steer kits.. weather sealed and priced to match..
http://www.elephantracing.com/suspen...4bumpsteer.htm

these are the last 2 pieces of my front end I need...

333pg333

I ran almost that configuration with my Simmons wheels. ie 18 x 9" et 51 w 255/35 up front. You should have no issues as far as clearance unless you have big springs, lots of neg, and a very low car.
Is there any reason why you are looking for this exact setup 9.5" x 255?

951_RS

Johnkoawood, have you looked into RE-11's or AD08's?
I'm running ad07's now and have used RE-01r's in the past, both are really great tires, but haven't had a chance to run the newer versions of these tires.

Fast4525

Good to know Your 18x9" ET51 is the same outside spacing as an 18x9.5" ET57 so we are both in the same ballpark.


I want to use a 255/35-18 Dunlop Z1 or Yokohama AD08 front tire and for this size of tire my rim width choice is 9.5". Nothing more than personal preference

333pg333

Well you'll have a range of rim sizes for those tyres as you know. I'm sure 9.5" will be fine.

gt37vgt

Ok I'm not getting these offsets please help me ..
Ok pat run's 10" et60 all round on an 86
weston Dillard runs 65 all round -15 spacer rear so thats 65/ 50 on an 87 ..
is an 87 the later offset ?
is there only realy 2 car off sets post 86?
i am using 968 rear arms
custom front arms 330 long 968 spindles ..
so mine will be like a 968 in offset terms ..
so will i be ok with my 65 front and 47 rears? 10"

333pg333

Mine was on a late offset 89 Adam. You couldn't fit et 60 on early offset.

PFR

Ah, good to see my car showing up again in one of these threads. I don't know why these online discussions go round and round. 18x10s will fit in the front with a 285 without issue. There was no magic here, just measured offsets and camber plates on a stock fendered '87.

If you're going racing, as I have, I really don't think you can go with too much tire providing you keep the wheels light and keep them tucked in so you aren't creating a whole bunch of unnecessary drag. Also a square setup doesn't mean the car is going to explode! Run what makes sense for what you're doing. You don't need stagger if don't have the power to justify the big rears, as for making the argument that you don't need the big fronts if your car already turns in nicely - I'd say you're not driving through the corner hard enough!

If you're just building a street car then do whatever you want! Stretch, poke, zero offset, whatever trend makes you happy. Also keep in mind tire sizes are subjective, so one 285 might fit, but another might not. You need objective numbers like overall diameter and section width. Again, this isn't tricky, all the info is readily available.

-Jared

Iridium

Jared, what's your offset on those CCW's?