Offset 101 For Dummies

[sultan]

Originally Posted by Doluck

If your in the wheel business then it is 10" you dont messure a wheel from end to end, you mesure from the seat to seat.
We always use mm... cus engineers and designers never us anything US.. hehe ... only the metric system. This way its the same world wide.

... these are some nice pics you guys are coming up with....
I will use the hell out of these for trainging..

but the point is when you are figuring out offset you do NOT use seat to seat width, you use overall width. if people tried to figure out the offset of their wheels using what people said earlier in the thread it would be wrong. when a wheel size is not marked most sellers of wheels in the US and some in japan (upgarage) do not correctly measure the wheels and you end up with a different offset and width.

and they were talking about converting to mm which is 100% pointless except for offset, not actually measuring in mm. this thread is not about engineers and their fancy metric measuring tools, it's about retarded people on zilvia trying to figure out what size their wheels are.

[babowc]

Originally Posted by Doluck

If your in the wheel business then it is 10" you dont messure a wheel from end to end, you mesure from the seat to seat.
We always use mm... cus engineers and designers never us anything US.. hehe ... only the metric system. This way its the same world wide.

... these are some nice pics you guys are coming up with....
I will use the hell out of these for trainging..

That is completely irrelevant to this topic.
OP isnt in the wheel business.
You'll HAVE to measure the physical dimensions from lip to lip because ultimately, the seat width doesnt matter for shit when you're fitting the wheels on the car.

[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!

[240MADNESS]

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

[nissans13]

So, will a 17x13 -26 front 17x14 -36 rear fix under a s13, with 20mm front and 50mm overfenders?

[nathanong87]

Originally Posted by nissans13

So, will a 17x13 -26 front 17x14 -36 rear fix under a s13, with 20mm front and 50mm overfenders?

ur kidding right.....

i bet you most people would have a TOUGH time fitting 17x13-26 in the rear with bulging 50mm overs....

to put it in persective. i run a 17x9.5 +12 in the front of my s14.... a 17x13 -26 will effective stick out 81mm more.... and dont forget that one needs to turn the wheel for steering..... tubbed fenders would be least of your worries.

Originally Posted by pornosquadz

just out of couriosity who knows if the nismo lmgt1 make any of there offset zero or negative??? kuz my lmgt1 are 18x9.5 offset +14(all 4 rims). any suggestions on what size tires and brand should i get???

to my knowledge they do not come in negative or zero offsets. 18x9.5 in the rear should be pretty simple to fit in the front and rear. roll your fenders and hammer the high spots of your wells.

[nissans13]

I would like to get a straight answer, not some asshole trying to a bad ass. If you can't answer someone's question with out being a dick. SHUT THE FUCK UP!!!!!!!!

[rakooda]

Originally Posted by nissans13

I would like to get a straight answer, not some asshole trying to a bad ass. If you can't answer someone's question with out being a dick. SHUT THE FUCK UP!!!!!!!!

Someone on this forum once said "dont ask a stupid question if you dont want a stupid answer" I'm not saying your question is stupid, but why in the hell do you want to run a 17 x 13 in the front in the first place? Trying to be gangSTAR or what? because performance-wise, that makes absolutely 0 sense. So to you answer your questions.. NO, thats just not smart.

Yo! trying to go 5 lug deep and cheap for my s13 thinking about going with china mustang copy's 17x10 +20 all around anybody know if they will clear the coils in the front???

I dont know the 13 chassis all that well at all. I've heard of peoples running 10 wide up front, but I'm not exactly sure what the fine details were, theres a gang of info in the "fitment whore" thread you just gotta find it, lol. or search Zilvia. I would think you can do it, maybe with a minor pull? But like I said, thats a pure assumption hahah.

[Steveohoes]

Great write up!

Definitely needs to be stickied

[Doluck]

This is true, I always just add 12mm to the side im trying to get a tight fitment on. I t would be nice if the width was taken from lip to lip tho.... If someone need to get detailed you would need to messure the wheel by hand.

[koukimonster139]

Doluck, you're a jackass

we're not talking about how to measure a wheel

we're talking about how to measure the offset of a wheel which is not obtained using the seat width.

[Doluck]

Wow ... you guys are tards.... If you read the whole post you woudl see the relevants.

If you have a 10" wide wheel(254mm) with +35mm offset.(254/2+35=162)(254-162=92) so you cant go thinking that you have 162mm / 92mm, cuz when we tell you specs on a wheel its width is from seat to seat. That 10" wide wheel is really 10.8" or so. You back space is really about 102mm not that 92 you would get from that wheels specs. get it... it was just an fyi. So chill out...

[babowc]

hence our response:
10" wheel is not physically 10", rather nearly 11".

you just reiterated what we said.

[Doluck]

But the offset is that of a 10" wheel. which means you need to add a few mm to you math if you are doing the math for a perfect fit.

[rongfk]

how can you tell the offset from looking at the back of the wheel? what letters are typically used to determin it.

[koukimonster139]

if the wheels are worth a flying fuck there will be a stamping or a sticker showing the size, width, manufacturer, offset, model number etc...

[Doluck]

No its not right... thats what im trying to tell you. if the maker says its a 10" wheel its not, and they say the offset is +35 well its not. Cuz the wheel is really 10.8" and the offset (from lip to lip) would change. The offset # we give is off the width from seat to seat.

[babowc]

Originally Posted by Doluck

No its not right... thats what im trying to tell you. if the maker says its a 10" wheel its not, and they say the offset is +35 well its not. Cuz the wheel is really 10.8" and the offset (from lip to lip) would change. The offset # we give is off the width from seat to seat.

posted that earlier.
you must've missed it.

but i see what you're saying.

[sultan]

Originally Posted by koukimonster139

if the wheels are worth a flying fuck there will be a stamping or a sticker showing the size, width, manufacturer, offset, model number etc...

my work vs-ss and work emitz have the sizes stamped on them, the ssr d5r's have a sticker.
my amistad type d, no sticker or marking. my old weds kranze cerberus, no sticker or marking. i guess they are not worth a flying fuck then.

Originally Posted by Doluck

No its not right... thats what im trying to tell you. if the maker says its a 10" wheel its not, and they say the offset is +35 well its not. Cuz the wheel is really 10.8" and the offset (from lip to lip) would change. The offset # we give is off the width from seat to seat.

that is completely wrong. backspace - centerline (based on overall width of course) = offset. i've measured wheels with marked sizes (rota grid off road, work emitz) and my measurements match what is on the wheel. rota said +10, it was +10, work said +0 and -16, it was +0 and -16.

[koukimonster139]

^ thats wierd

my weds kranze cerberus have stickers


guess yours fell off

[Doluck]

I do know Rota do give you the total width.. I found that out when I worked with them awhile ago. Thats why they are one of the brands I carry.
My works, volks,enkei and 99% of the other wheels I have sold have never added up. Rota does it to cut down on weight.

[usdm180sx]

Wow. You should read the "for all you rota haters" thread haha

[Doluck]

I did... I know 240 guys dont like them... I love them, but that cuz I can sell the hell out of them to honda guys..

[rongfk]

where do i look?

[xamraci]

Originally Posted by rongfk

where do i look?

I would IMAGINE the k-50

My Konig Rewinds had the -9 on the inside in a similar area, my Volks had them on the back also(+42)...So do my BBSs(+0, +19)...thats the only number I could see being it...what is the style of the wheel?

[rongfk]

Originally Posted by rongfk

where do i look?

any advice? it appears to have a positive offset, but of what? is the question.

[GabeS14]

Originally Posted by rongfk

any advice? it appears to have a positive offset, but of what? is the question.

Is there any other stickers on it?
usually there is a sticker with the size, and next to a a positive or negative number followed by a number(*in smaller letters)
if not then you would need to get it measured,
or check the manufacturers website to see the different offsets they offer and try to guestimate which one you have!

[SSMini]

Hope you guys dont mind me asking a question here rather then starting a new post. I picked up a set of wheels and some coilovers, there not installed yet. I still have to convert to 5 lug. My question is, would I need front spacers if running a 18x8.5 with a +30 off set when using coilovers? If it matters, Im going to be using Rays Gramlights 57F's with Tein Flex coilovers. Rear wheels will be 18x9.5 +20 off set.Thanks...

[Yuri]

Originally Posted by rongfk

where do i look?

16x7 +50
Most oem wheels are stamped like this.
The offset will be a random spot on either the back of the face, or the front near the bolt holes.