PhilVia

lol ..... here play with this http://www.rims-n-tires.com/info_specs.jsp
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let5l1de

this is an example of my rear setup im currently using:
Volk CE28N
18x9.5 +28 offset
265/35/18
negative 2deg camber



This rim resembles the 1st illustration on the left showing positive offset. Since the illustrations below are exaggerated a bit to show the differences, it has a curb appearance of the center illustration even tho my rear setup is positive.



These are pics from the back of the rim showing coilover to rim clearance. The clearance between the rim and coilover is about 30mm total. (be sure to leave at least 4mm open space for things to move, otherwise you will rub)





this is how the rear looks with this setup. with minor lip massaging and -2deg. camber adjustment, the wheel tucks without major rubbing.

KA240SX808

Do you have pic of clearance in the front???


Very nice post btw

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usdm180sx

Nice, but it doesn't allow for stretched tires

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powersteeringless180sx

great thread for people who don't understand offset and wheel fitment. hopefully everyone on zilvia will now have wheels that sit flush.

sldbyuramg

great explaination. all of them

k's_silvia2.0

Does anyone know if a +38 offset is a good offset?

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MrChow

^^ Uh??

It isn't? That's high. Go to the fittment thread.

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k's_silvia2.0

^Just curious thats all.

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firelizard

It's a pretty good one. The curves of the three echo those of the eight, but the incomplete circles of which it is compose draw the eye to the contrasting right angles of the 'plus' sign, traditionally associated with positive feelings.

or you could search

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MrChow

Oh lol. stock offset is around 40 ish +. Does that help?

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babowc

I think it'd be alot more useful if we can find out what kind of backspacing clearance we have with STOCK wheels on S13 and S14.

then you can just plug your sizing into a offset calculator on that miata webpage and find it out from there on.

obviously, stock struts and coilovers have different clearances and its all different for every different coilover.

Providing a base of what the clearance would be with ALL stock parts would basically lay a foundation for others to build on, though.

Unfortunately, I dont have any of these informations.

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s13.dark1

i guess i can learn something new everyday. its simple

NI_YON_Zenki

wow, looks like it's gone abit lower or negative than 101

good offset calc. find philvia, I would've never gone further than tirerack or some shit of the same! lol. I just study the books and common knowledge. + I have my wheels. haha.


But, ahem. to keep to the current trend subject. I feel it depends on the complete system of the wheel to determine whether the +38 offset is good for a car, let alone FR, if being placed in the
rear?

I could hear these numbers being thrown around the pits of WRC or SCCA rally.

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Jus Skott

wow that was so easy to understand even a cave man can do it now. lol

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TougeLabs

18x10.5 with -7
for front with vertex fenders
18x12 0 offset with vertex rear 35mm fenders

will these fit ???

s14 chassis

cxlo8331

^^HAHA I was gonna say the same thing. I was trying to get it to do a 225 on a 10 for like 45secs, but it only would do a 255.
FAIL.

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redline racer510

I have a 90 240sx and i want some fn01rc's preferably 17x9 that have a deep dish look what offset do you guys recommend and will these clear a 300zx brake set up and coilovers without them sticking out if not what do i need any opinions or recommendations are appreciated
thank you

usdm180sx

fn's don't have dish...

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tougefactory

It might be tight on the inner clearence for the front, what size front over fender? Also what brakes. The rears your going to have to MAKE work with proper camber and tire size.

jotronic

Thanks for sharing this info. It was clear enough for an old fart like me

shadow_s13

Every Nice!!! Thanks. ^_^

vehicle_5

Very nice guide. I had no idea about offset before reading this thread. Now all I have to do is study up on camber and tire sizes and then I'll truly grasp the idea of wheel fitment.

Fastimport

Not quite.........
When a rim is said to be 10" or 7" wide, that is the width where the tire sets.
Actuall rim width is usually about 1" wider because of the lip thickness.
(aprox. 1/2" per lip)

So a 10" rim is actally 11" wide on the outside.
And this 1/2" will sometimes cause clearance problems with shock bodies, tires, etc..

beeracing s14

if there is someone who still cant understand this simple examples... ill hit him in the head.

DriftCat

For the life of me I can never keep straight which direction is positive or negative when dealing with offset.

serah31500

Sorry guys I couldnt find pics or info with anyone running a setup similar to what I am considering for my stock bodied s13 w/coilovers so I figure I just ask for help. The wheels I am considering are 18x9.5 and 18x10.5 with a -10 offset for all.I am assuming I am going to have to do some pulling/rolling but how much? I tried digging up pics but no luck if anyone can find any that would be great. Thanks guys!

sr20 driver

can anyone just tell me what width of rims do i need for them not to rub anything with 0 offset and them being as close as possible on both sides i dont want them sticking out i want them under the fenders their 18'' and on an s13

240MADNESS

Very understandable. But i'm addicted to negative offset. Very good thread.

Import_Prophetz

BEST POST EVER! This post makes it easier to explain to people what and how offset works. Now I dont even have to talk to them, I just link them here. +1 to you