I know theres a good chance im reposting and

But here it goes cuz you guys are a bunch of pals lol.

DO 350Z offset's be the same offset as the 37's? I know I herd g35 coupe wheels will not work, dont exactly remember why though.

Also if someoen has this info, can you post me the proper offsets for the

g37
350
and g35 coupes

just so i can understand the diff.

Thing is the whole offset subject I really dont have an understanding too.

Sorry for the dumb question ahead of time lol

 

i heard pretty much Zs and G35s have same offsets which means those wheels for the Zs will not fit on G37

i dont know exact offset for these three cars but G37S's offset is +30

and Zs' offset is below +30( 18 or 19)

 

to the OP... i hear ya man, u had the ***** to post the question so props!
Cuz im kinda lost on offsets too, was gonna have someone draw me a pic or something to explain it my next meet.

with a size like 245/40/19 i used to think, back in the day, that the 40 was the offset... but then i see ppl posting like 245/40/19 +30 where the +30 is the offset.

I need some education too. *BUMP*

 

^^Oh boy. Yeah the 40 in 245/40/19 is not the offset.

Here is an explanation of tire fitments and what all the numbers mean, and how they correlate with the old sizes.

First, lets look at metric sizes of today. Ex. 225/70R15. The first number(225) represents the cross section width of the tire at its widest point(sidewall) in millimeters. The second # (70) represents the Aspect Ratio. This a big term meaning that this tire's sidewall height is 70% of the cross section width, or 70% of 225mm. The R means simply Radial tire construction. And finally the 15 represents the rim size.

Now, if you want to go to a wider tire, but you don't want to change the overall diameter/height of the tire the rule of thumb is this:

Take our first example 225/70R15 To go wider you would do this. 235/65R15 wider yet would be: 245/60R15 and one more would be 255/55R15 You see the connection here. When doing what is called a "plus fitment", you increase the width number by 10 and decrease the Aspect Ratio number by 5. That is if you keep the same rim diameter. There are different rules for changing rim size that I won't get into here.

So, if you had a 225/70R15, and you went to a 255/60R15, then you would not have the same overall diameter/height. You would be off 5%.

On tires that came out on these early 60's cars Ex. 7.50/15, the cross section was represented in inches. It was still measured at the fatest part of the tire/sidewall. The tread on that tire was about 5 inches wide. The reason there was no Aspect Ratio number listed is because the sidewalls were always a 1 to 1 ratio. There were no percentages. The sidewall was the same as the width. Then in the late 60' and early 70's they changed to letter designations and used an aspect ratio for the first time. Ex. G-78/15. Remember those? G stood for the width which in this case was about 215mm. Then the 78 was the Aspect Ratio. and you know what the 15 meant. From what I understand the old designations roughly translated like this. F=205,G=215,H=225,L=235. That was if the 78 aspect ratio was used. So a G-78/15 was about the same as a 215/75R15. Those changed if you went to a 60 series or 70 series. The old 78 series matches closely with the 75 of today.

Is everyone totally confused yet?

 

Can you explain that again please? LOL j/k

 

lol, good write up kidcane... i have known all about the tire sizes. i just USED to think the 40 might have been offset, but then i learned all about tire sizes and what they mean... i just didnt learn about WHEEL sizes and the offsets like +30 and all.

GOOD info tho! thnks

 

The offset refers to where the hub mounts to the wheel in relation to the wheels center. So a +28 offset would mean that the wheel mount is 28mm toward the fender from the center of the wheel.

http://www.1010tires.com/WheelOffsetCalculator.asp

 

o0o0oooooo ok between kids and ruskies post and ruskies link I actually understand what offset means now lol.

thanks fellas.

 

hey guys, so for alot of ppl here putting different tires on the stock 19"s why are they going from 225/45 in the front to 245/40 and saying that is plus zero. Shdnt plus zero be 235/40 ???

Same for rears, they goin 245/40 to 275/35. Shdnt be 255/35 ?

 

OH crap, n/m i just did the math for the front 245 * .4 is closer to the original tire size # u get for 225 * .45

235 * .4 gives a # thats more off than the original tire size. So thats why the plus zero tire size in the front is 245/40 not 235/40 I just LEARNED something! thanks Kid and Ruskie

 

someone has z rims on their g. i forgot who.

 

All I know is that Z/G wheels are in the 20's offset and the G37 wheels are in the 30's to low 40's. It all depends on the size you go with. I know some one here is running 10.5 +31 here, works with some negative camber. I would not suggest going smaller then +30 on a 10.5 wheel in the rear.

I have 9.5 +36 fronts and 10.5 +37 rears and it fits very snug I think.

 

The Cobb tuning G37S has Volk GT30's
9.5 +23 front
10.5 +28 rear

That's the look I'm looking for and they fit PERFECTLY.

 

I am on 19's but the rears are 10.5 with 29 offset. I had to dial in the camber a bit and they barely fit.

 

When you played with the camber, did you get a camber kit or are the G37's rear suspensions adjustable from the factory? Thanks