Early 80 series owners: OEM wheel offset question

[bryan89]

hey fellas,
i normally reside in the mini section, but I had a quick question for you guys that I couldn't answer.

I searched both mine and your forum and cannot find the offset of the factory "X" pattern aluminum wheels that came equipped on the early (90-93??) fj80s.

The same style wheel was available on first gen 4runners with "offset 8" cast into the side. From what I understand the 80 wheels had a different offset with the same wheel pattern.

the reason I ask is I am looking into getting a set for my 4runner and I wanted to see if I could obtain a bit wider stance without using wheel spacers.

Could someone running these on their 80 run out and snag a quick pic of their wheel?

greatly appreciated,
happy wheelin'

 

[bhmmapping]

I thought they were the same except the Land cruiser rims had a steel insert at the lug nut holes.

 

[bhmmapping]

here is a pic of one:

https://forum.ih8mud.com/tires-wheels/209061-1992-spare-tire-rim-free.html

 

[bryan89]

maybe so, i dont know for sure.
i have never seen a different one.

I am trying to put this myth / folklore to rest or prove it.
thats why i want a pic of an x pattern aluminum rim showing something other than offset 8.


edit:..yeah thats the rim im talking about. cant see the offset stamp though

 

[busmup808]

 

[jonheld]

Rim offset is the mounting face center point in relation to the rim width.
Rim backspacing is the distance from the mounting face to the inside edge of the rim.
I assume you want backspacing, which is what will determine if a rim will fit.
The OEM 91/92 alloys were 4.5"

 

[VacMan]

Rim offset is the mounting face center point in relation to the rim width.
Rim backspacing is the distance from the mounting face to the inside edge of the rim.
I assume you want backspacing, which is what will determine if a rim will fit.
The OEM 91/92 alloys were 4.5"

If they are 8" wheels this would make them 0 offset.

Sent from my DROID BIONIC using IH8MUD

 

[bryan89]

Rim offset is the mounting face center point in relation to the rim width.
Rim backspacing is the distance from the mounting face to the inside edge of the rim.
I assume you want backspacing, which is what will determine if a rim will fit.
The OEM 91/92 alloys were 4.5"

im pretty sure they fit, as i have heard of people running them on 4runners. i just wanted to see if there was an actual difference or if they were the same wheel. i mean if they are the same identical wheel, other than the offset, it would have the same effect as changing the backspacing. one would stick out further than the other.

offset and backspacing are just two different ways of measuring the same thing. you can get the same information for a given wheel width from either measurement. just the datums are different

If they are 8" wheels this would make them 0 offset.

Sent from my DROID BIONIC using IH8MUD

vac man, are the 80 x pattern wheels 8" wide? im pretty sure mine are 15x7, so that would be another difference if true.

 

[busmup808]

The pictures that I posted of my 80 are 15x7 OEM rims. TOYOTA didn't make this rim 8" wide

 

[jonheld]

offset and backspacing are just two different ways of measuring the same thing.

Incorrect statement.

Offset is the amount the mounting face is off of the centerline of the wheel. It is measured in millimeters.

Backspacing is the mounting depth of the wheel. It is measured in inches.

2 very different measurements.

 

[bryan89]

i agree. they are two different measurements, but i guess what i was trying to say was that you can tell how much the wheel will stick out with both measurements, assuming constant wheel width.


Busmup:
thanks for the pic. i cant see it right now cause its blocked by my work server thingy (go figure) so i will have to view it when i get home.
Thanks!

 

[VacMan]

Incorrect statement.

Offset is the amount the mounting face is off of the centerline of the wheel. It is measured in millimeters.

Backspacing is the mounting depth of the wheel. It is measured in inches.

2 very different measurements.

You're both right, actually. The width of the wheel is measured using the inner lip where the bead sits. The backspacing is measured by using the entire width of the wheel, typically adding about an inch. If you have you have one of the numbers you can figure out the other assuming the same wheel. For example, with the stock 7", ET8 wheel reference above the backspacing will be closer to 4.25" than 4.5" because it's a narrower wheel.

Backspacing is a domestic thing, btw; in the rest of the world wheels are typically described by offset alone.

i agree. they are two different measurements, but i guess what i was trying to say was that you can tell how much the wheel will stick out with both measurements, assuming constant wheel width.

Busmup:
thanks for the pic. i cant see it right now cause its blocked by my work server thingy (go figure) so i will have to view it when i get home.
Thanks!

His pics aren't close enough to see the stampings. I think looking for a FS thread could solve the mystery once and for all.

 

[NorCalBorn]

Here ya go. Every single one I've ever seen was Offset-8 for up to a 31" or 32" tire. FWIW I only ever seen 8 offset's, even on the Cruisers, the metal insert on the Cruiser rims was IIRC to help keep them torqued properly and give a little added strength since the 80 Series weighed a considerable amount more. I've heard rumor's of another size but never seen any proof.

 

[vipergrhd]

offsets

Here is what i found through E-bay,there is an offset 10 and 15 most common is 8.did the landcruiser came with offset 15 0r both?could someone check your wheels.

 

[bryan89]

thanks norcal!
just wanted to see for sure what the land cruiser wheels were.

but the fact that offset 10 and even 15 is available is intereseting. wonder what triggered what size wheel the factory used.

anyway, the offset 8 is good enough for me, as i already have a set.

 

[Reiti]

I have a set of 7 x 15 early 80 series rims here and the offset is +10 mm compared to your +8 mm. So there is not a wider stance, it will be more narrow. If you want the same style of rims and a wider stance, you have to find a set coming from a light duty 70 or 73 special and you will get an offset of -20 mm. So your stance will gain 2 x 28 mm (around 1 " per side).

Best Regards,

Dirk