Is there an acceptable range for wheel offsets for the 80 or is 3.5" the holy grail? I am looking at a Rock Crawler steel wheel, one is a local buy and it is a 3.75" offset. The other is through Discount Tire and they are moving a brand called Unique and the supplier claims the 6 lug 5.5 they have is a 4" back set. I read a post that said stick with the 3.5" or else but I don't recall if that was on an 80. My is a 91.
correct wheel offset for 80 (1 Viewer)
- Thread starter freebird
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It depends on the width of the wheel. I'm running a 16x10 w/ 4.5" backspacing and it is just about perfect. (That would translate to a 3.5" backspacing on a 16x8 wheel) Perfect would be (in my case) would be 4.25", but I'm running a 12.5" wide tire. HTH
offset on these trucks is 0.0". You guys are talking backspacing, different animal all together.
Rick is correct.
To put it togther:
The "correct" wheel is 0.0 with a back-space of 4.5 inches. This makes the wheel 8 inches bead-to-bead and 9 inches flange-to-flange.
To put it togther:
The "correct" wheel is 0.0 with a back-space of 4.5 inches. This makes the wheel 8 inches bead-to-bead and 9 inches flange-to-flange.
landtank said:
I believe that is what I wrote.
I figured that backspacing is what he was talking about... that and I was excited about knowing something...
Well I couldn't remember the exact numbers for our trucks as Dan has and just stuck with what I did know for sure.
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back space
Thanks for all the input. It occurs to me I probably do know what I am talking about. I am fixing up this 91 for my son and want to broaden the stance a bit. We are running 33x12.50's on a 10" rock crawler on our lifted 60. We wanted to duplicate the look so I have just installed a mild 2" OME lift and the stock 15 x 7 rims look weak. I have to repalce the tires anyway and was looking into another Rock Crawler steel rim but a 15 x8. Originally I was thinking a a 32x11.50 x15 and while it may be a little boring compared to the 35' & 37's, we run mostly asphalt and mud here in North Texas so I gotta comprise a little. I looked at set 15 x 8's with a 3.75 something or another and I thought it was the offset but maybe it's a backset. basically i don't want the rim or tire to rub on brake or suspension components. I may go the 33x12.50's instead of the 32's. So the real question I suppose is that I need some guidance on specs. If a wheel has 4" backset or offset as opposed to a 3.75 or a 3.50 will that make a diffrence? Logically it seems that if the wheel sits too far into the wheel well it will rub against something. What is your recommendation for a 15 x8". Sorry for the rambling and the confusion. With your help I'll be grinning again soon.
Thanks for all the input. It occurs to me I probably do know what I am talking about. I am fixing up this 91 for my son and want to broaden the stance a bit. We are running 33x12.50's on a 10" rock crawler on our lifted 60. We wanted to duplicate the look so I have just installed a mild 2" OME lift and the stock 15 x 7 rims look weak. I have to repalce the tires anyway and was looking into another Rock Crawler steel rim but a 15 x8. Originally I was thinking a a 32x11.50 x15 and while it may be a little boring compared to the 35' & 37's, we run mostly asphalt and mud here in North Texas so I gotta comprise a little. I looked at set 15 x 8's with a 3.75 something or another and I thought it was the offset but maybe it's a backset. basically i don't want the rim or tire to rub on brake or suspension components. I may go the 33x12.50's instead of the 32's. So the real question I suppose is that I need some guidance on specs. If a wheel has 4" backset or offset as opposed to a 3.75 or a 3.50 will that make a diffrence? Logically it seems that if the wheel sits too far into the wheel well it will rub against something. What is your recommendation for a 15 x8". Sorry for the rambling and the confusion. With your help I'll be grinning again soon.
ryanjl
SILVER Star
Well, 4.5" backspacing is stock.
4" backspacing moves each tire .5" out, which is what most people would go to if they wanted a wider stance with an aftermarket wheel.
Much wider than that on 32"s, and you'll have it looking like a skateboard.
4" backspacing moves each tire .5" out, which is what most people would go to if they wanted a wider stance with an aftermarket wheel.
Much wider than that on 32"s, and you'll have it looking like a skateboard.
Just buy the wheels with the 3.75" backspacing. On my 91 I really liked the Eagle Alloy 589 it was a 15x8 with 3.25" backspacing. I believe on a 91 stock backspacing is 4.25" on a 15x7 not sure what the offset is. Later 80s have 16x8s with 4.5" backspacing. Your 3.5" backspacing rule is for early Crusiers FJ62s and older. Due to the steering, brakes, and suspension you could not run greater than 3.5" although I know several people including myself on my 60 who go away with 3.75" backspacing with the right rim.
Backspacing is what pushes the wheel out. All it is the distance between the rim edge and the mounting surface. The lower the number the further the wheel gets pushed out.
Since you have another earlier Cruiser I'd look for a 15x8 with 3.5 or even 3.25" backspacing. Then if you had a reason to swap tires and wheels you could easily. Check the 3.75" wheel on your 60 and see if it fits.
Also, I like the 15x8 on a 12.50" tire.
Backspacing is what pushes the wheel out. All it is the distance between the rim edge and the mounting surface. The lower the number the further the wheel gets pushed out.
Since you have another earlier Cruiser I'd look for a 15x8 with 3.5 or even 3.25" backspacing. Then if you had a reason to swap tires and wheels you could easily. Check the 3.75" wheel on your 60 and see if it fits.
Also, I like the 15x8 on a 12.50" tire.
Agreed. 8" wide wheel and 4" 3.75" backspacing.
This is great. I always wondered what the stock specs were for the OEM alloy.
I have a question...I was thinking about picking up a set of TrailReady beadlocks for a trail set. I like the backspacing with the stock wheels and a 1.25" spacer right now....so if I went with a 17X9 wheel what backspacing would I want to keep me where I am with the stock wheels and 1.25" spacers???? Also does anyone have any recs on the TR wheels???
Add half an inch to the stock 4.5" back spacing, so 5" back spacing plus the spacer and you'll be where you were according to center, but you'll stick out 1/2" further. OR you could do the smart thing and go for 4.25" back spacing on the new rim and get rid of the spacer.
This is where my math gets funny...I plan on getting rid of the spacers if I get a trail set of wheels. I was thinking 4.5 stock plus half an inch so 5" minus the spacers which are 1.25" so 3.75" backspace should be about right....or do I need a math lesson.
It all depends on what you want where. If you're wanting the center of your rim to be the same place then you're right, 3.75". If you want the outside of your tire to be the same place, then 4.25".
Rob, you definitely don't have stock height and I'll bet you'll be running 37's to boot. Like alkaline says, it'll all depend on your particular "sweet spot" for getting the tire to stuff up into the wheel well. I'll post up some pics of my steel black rockcrawlers and the toyo 37's with and without the spacers this coming weekend.
Oh, and I vote for the internal beadlocks!
Oh, and I vote for the internal beadlocks!
clownmidget said:
I have the 6" and was planning on running 37" Krawlers on a 17x9" wheel. What would the "sweet spot" Be? I like my 315" with the 1.25" spacers but would I need more with the 37" and I don't want to use the spacers with the new rims so I want them to have the "right" backspace. With my calculations 3.75" would have the outer edge of the wheel where it is now?! right?
what are these internal beadlocks you speak of??
With the spacers you have 3.25" (4.5" - 1.25") backspacing, so that puts the outside edge of your rim 4.75" out from the flange. 9"- 4.75" = 4.25" backspacing to keep outside edge the same.
rock crawlers
I have seen a few 80's with the rock crawlers, but I understand these are hub centric, can I safely use these on my 92 fj80 as the vehicle is hub centric? Some say merely using the correct lug nuts solve the problem. Is this so?
I have seen a few 80's with the rock crawlers, but I understand these are hub centric, can I safely use these on my 92 fj80 as the vehicle is hub centric? Some say merely using the correct lug nuts solve the problem. Is this so?
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